/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf -i ../../../trunk/examples/svcomp/loop-invgen/up.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7390193 [2022-04-05 05:23:52,050 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-05 05:23:52,052 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-05 05:23:52,080 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-05 05:23:52,089 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-05 05:23:52,089 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-05 05:23:52,090 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-05 05:23:52,091 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-05 05:23:52,092 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-05 05:23:52,093 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-05 05:23:52,095 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-05 05:23:52,104 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-05 05:23:52,110 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-05 05:23:52,115 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-05 05:23:52,116 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-05 05:23:52,117 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-05 05:23:52,118 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-05 05:23:52,120 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-05 05:23:52,130 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-05 05:23:52,131 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-05 05:23:52,133 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-05 05:23:52,134 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-04-05 05:23:52,171 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-05 05:23:52,171 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-05 05:23:52,172 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-05 05:23:52,172 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-05 05:23:52,173 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-05 05:23:52,173 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-05 05:23:52,173 INFO L138 SettingsManager]: * Use SBE=true [2022-04-05 05:23:52,173 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-05 05:23:52,174 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-05 05:23:52,174 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-05 05:23:52,174 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-05 05:23:52,175 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-05 05:23:52,175 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-05 05:23:52,175 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-05 05:23:52,175 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-05 05:23:52,175 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-05 05:23:52,175 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-05 05:23:52,175 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-05 05:23:52,175 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-05 05:23:52,176 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-05 05:23:52,176 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-05 05:23:52,176 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-05 05:23:52,176 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-05 05:23:52,176 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-05 05:23:52,177 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-05 05:23:52,177 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-05 05:23:52,177 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-04-05 05:23:52,177 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-04-05 05:23:52,178 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-05 05:23:52,178 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_QVASR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-05 05:23:52,378 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-05 05:23:52,399 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-05 05:23:52,402 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-05 05:23:52,402 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-05 05:23:52,403 INFO L275 PluginConnector]: CDTParser initialized [2022-04-05 05:23:52,404 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/up.i [2022-04-05 05:23:52,466 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/362393d87/5836c58e4d514d05a912ed3104cdb9f2/FLAGb4fe7655c [2022-04-05 05:23:52,877 INFO L306 CDTParser]: Found 1 translation units. [2022-04-05 05:23:52,878 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/up.i [2022-04-05 05:23:52,882 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/362393d87/5836c58e4d514d05a912ed3104cdb9f2/FLAGb4fe7655c [2022-04-05 05:23:52,892 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/362393d87/5836c58e4d514d05a912ed3104cdb9f2 [2022-04-05 05:23:52,894 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-05 05:23:52,895 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-05 05:23:52,896 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-05 05:23:52,896 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-05 05:23:52,901 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-05 05:23:52,901 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 05:23:52" (1/1) ... [2022-04-05 05:23:52,902 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19e3706b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 05:23:52, skipping insertion in model container [2022-04-05 05:23:52,902 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 05:23:52" (1/1) ... [2022-04-05 05:23:52,910 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-05 05:23:52,927 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-05 05:23:53,095 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/up.i[893,906] [2022-04-05 05:23:53,111 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-05 05:23:53,123 INFO L203 MainTranslator]: Completed pre-run [2022-04-05 05:23:53,138 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/up.i[893,906] [2022-04-05 05:23:53,141 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-05 05:23:53,154 INFO L208 MainTranslator]: Completed translation [2022-04-05 05:23:53,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 05:23:53 WrapperNode [2022-04-05 05:23:53,156 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-05 05:23:53,157 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-05 05:23:53,158 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-05 05:23:53,158 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-05 05:23:53,167 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 05:23:53" (1/1) ... [2022-04-05 05:23:53,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 05:23:53" (1/1) ... [2022-04-05 05:23:53,174 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 05:23:53" (1/1) ... [2022-04-05 05:23:53,175 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 05:23:53" (1/1) ... [2022-04-05 05:23:53,188 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 05:23:53" (1/1) ... [2022-04-05 05:23:53,193 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 05:23:53" (1/1) ... [2022-04-05 05:23:53,198 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 05:23:53" (1/1) ... [2022-04-05 05:23:53,200 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-05 05:23:53,201 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-05 05:23:53,201 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-05 05:23:53,201 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-05 05:23:53,202 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 05:23:53" (1/1) ... [2022-04-05 05:23:53,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-05 05:23:53,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:23:53,231 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-05 05:23:53,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-05 05:23:53,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-05 05:23:53,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-05 05:23:53,263 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-05 05:23:53,263 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-05 05:23:53,263 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-05 05:23:53,264 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-05 05:23:53,264 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-05 05:23:53,264 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-05 05:23:53,265 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-04-05 05:23:53,265 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-04-05 05:23:53,265 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-05 05:23:53,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-05 05:23:53,265 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-05 05:23:53,265 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-05 05:23:53,266 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-05 05:23:53,266 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-05 05:23:53,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-05 05:23:53,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-05 05:23:53,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-05 05:23:53,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-05 05:23:53,266 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-05 05:23:53,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-05 05:23:53,320 INFO L234 CfgBuilder]: Building ICFG [2022-04-05 05:23:53,321 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-05 05:23:53,415 INFO L275 CfgBuilder]: Performing block encoding [2022-04-05 05:23:53,422 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-05 05:23:53,422 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-04-05 05:23:53,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 05:23:53 BoogieIcfgContainer [2022-04-05 05:23:53,423 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-05 05:23:53,424 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-05 05:23:53,424 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-05 05:23:53,427 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-05 05:23:53,440 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 05:23:53" (1/1) ... [2022-04-05 05:23:53,442 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_QVASR [2022-04-05 05:23:53,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 05.04 05:23:53 BasicIcfg [2022-04-05 05:23:53,467 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-05 05:23:53,468 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-05 05:23:53,469 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-05 05:23:53,471 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-05 05:23:53,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.04 05:23:52" (1/4) ... [2022-04-05 05:23:53,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33ae869d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 05:23:53, skipping insertion in model container [2022-04-05 05:23:53,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 05:23:53" (2/4) ... [2022-04-05 05:23:53,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33ae869d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 05:23:53, skipping insertion in model container [2022-04-05 05:23:53,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 05:23:53" (3/4) ... [2022-04-05 05:23:53,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33ae869d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.04 05:23:53, skipping insertion in model container [2022-04-05 05:23:53,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 05.04 05:23:53" (4/4) ... [2022-04-05 05:23:53,473 INFO L111 eAbstractionObserver]: Analyzing ICFG up.iqvasr [2022-04-05 05:23:53,477 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-05 05:23:53,477 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-05 05:23:53,536 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-05 05:23:53,542 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-05 05:23:53,542 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-05 05:23:53,559 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-05 05:23:53,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-04-05 05:23:53,563 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:23:53,564 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:23:53,564 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:23:53,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:23:53,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1244271256, now seen corresponding path program 1 times [2022-04-05 05:23:53,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:23:53,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316852846] [2022-04-05 05:23:53,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:23:53,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:23:53,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:53,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:23:53,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:53,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 05:23:53,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:23:53,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316852846] [2022-04-05 05:23:53,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316852846] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 05:23:53,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 05:23:53,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-05 05:23:53,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030760263] [2022-04-05 05:23:53,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 05:23:53,764 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-05 05:23:53,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:23:53,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-05 05:23:53,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-05 05:23:53,798 INFO L87 Difference]: Start difference. First operand has 21 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-05 05:23:53,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:23:53,846 INFO L93 Difference]: Finished difference Result 35 states and 42 transitions. [2022-04-05 05:23:53,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-05 05:23:53,849 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-04-05 05:23:53,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:23:53,864 INFO L225 Difference]: With dead ends: 35 [2022-04-05 05:23:53,865 INFO L226 Difference]: Without dead ends: 17 [2022-04-05 05:23:53,868 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-05 05:23:53,872 INFO L913 BasicCegarLoop]: 21 mSDtfsCounter, 13 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 05:23:53,873 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 24 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 05:23:53,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-04-05 05:23:53,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-04-05 05:23:53,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-05 05:23:53,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2022-04-05 05:23:53,907 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 13 [2022-04-05 05:23:53,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:23:53,907 INFO L478 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2022-04-05 05:23:53,908 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-05 05:23:53,908 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2022-04-05 05:23:53,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-04-05 05:23:53,909 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:23:53,909 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:23:53,910 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-05 05:23:53,910 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:23:53,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:23:53,913 INFO L85 PathProgramCache]: Analyzing trace with hash 2131774937, now seen corresponding path program 1 times [2022-04-05 05:23:53,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:23:53,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793948612] [2022-04-05 05:23:53,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:23:53,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:23:53,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:54,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:23:54,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:54,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 05:23:54,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:23:54,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793948612] [2022-04-05 05:23:54,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793948612] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 05:23:54,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 05:23:54,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-05 05:23:54,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161431296] [2022-04-05 05:23:54,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 05:23:54,040 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-05 05:23:54,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:23:54,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-05 05:23:54,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-04-05 05:23:54,043 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-05 05:23:54,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:23:54,127 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2022-04-05 05:23:54,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-05 05:23:54,128 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-04-05 05:23:54,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:23:54,129 INFO L225 Difference]: With dead ends: 29 [2022-04-05 05:23:54,130 INFO L226 Difference]: Without dead ends: 18 [2022-04-05 05:23:54,134 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-04-05 05:23:54,136 INFO L913 BasicCegarLoop]: 15 mSDtfsCounter, 16 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 05:23:54,140 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 27 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 05:23:54,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-04-05 05:23:54,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-04-05 05:23:54,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-05 05:23:54,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2022-04-05 05:23:54,148 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2022-04-05 05:23:54,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:23:54,148 INFO L478 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2022-04-05 05:23:54,148 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-05 05:23:54,148 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2022-04-05 05:23:54,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-04-05 05:23:54,149 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:23:54,149 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:23:54,149 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-05 05:23:54,150 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:23:54,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:23:54,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1540521565, now seen corresponding path program 1 times [2022-04-05 05:23:54,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:23:54,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428281711] [2022-04-05 05:23:54,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:23:54,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:23:54,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:54,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:23:54,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:54,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 05:23:54,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:23:54,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428281711] [2022-04-05 05:23:54,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428281711] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:23:54,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729125577] [2022-04-05 05:23:54,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:23:54,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:23:54,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:23:54,223 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:23:54,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-05 05:23:54,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:54,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-05 05:23:54,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:23:54,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 05:23:54,441 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-05 05:23:54,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729125577] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 05:23:54,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-05 05:23:54,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 10 [2022-04-05 05:23:54,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994528971] [2022-04-05 05:23:54,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 05:23:54,447 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-05 05:23:54,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:23:54,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-05 05:23:54,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-04-05 05:23:54,448 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-05 05:23:54,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:23:54,498 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2022-04-05 05:23:54,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-05 05:23:54,499 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-04-05 05:23:54,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:23:54,501 INFO L225 Difference]: With dead ends: 30 [2022-04-05 05:23:54,501 INFO L226 Difference]: Without dead ends: 28 [2022-04-05 05:23:54,502 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-04-05 05:23:54,502 INFO L913 BasicCegarLoop]: 15 mSDtfsCounter, 9 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 05:23:54,503 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 54 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 05:23:54,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-04-05 05:23:54,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2022-04-05 05:23:54,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.125) internal successors, (18), 17 states have internal predecessors, (18), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-05 05:23:54,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2022-04-05 05:23:54,516 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 14 [2022-04-05 05:23:54,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:23:54,516 INFO L478 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2022-04-05 05:23:54,516 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-05 05:23:54,516 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2022-04-05 05:23:54,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-04-05 05:23:54,517 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:23:54,517 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:23:54,534 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-04-05 05:23:54,719 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:23:54,720 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:23:54,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:23:54,720 INFO L85 PathProgramCache]: Analyzing trace with hash 812776477, now seen corresponding path program 1 times [2022-04-05 05:23:54,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:23:54,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082462363] [2022-04-05 05:23:54,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:23:54,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:23:54,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:54,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:23:54,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:54,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-05 05:23:54,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:54,833 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 05:23:54,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:23:54,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082462363] [2022-04-05 05:23:54,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082462363] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:23:54,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050907055] [2022-04-05 05:23:54,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:23:54,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:23:54,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:23:54,838 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:23:54,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-05 05:23:54,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:54,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 6 conjunts are in the unsatisfiable core [2022-04-05 05:23:54,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:23:54,999 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 05:23:54,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:23:55,093 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 05:23:55,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050907055] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:23:55,094 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:23:55,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 12 [2022-04-05 05:23:55,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728744681] [2022-04-05 05:23:55,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:23:55,097 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-05 05:23:55,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:23:55,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-05 05:23:55,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-04-05 05:23:55,102 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 5 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-05 05:23:55,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:23:55,215 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2022-04-05 05:23:55,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-05 05:23:55,216 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 5 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 21 [2022-04-05 05:23:55,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:23:55,218 INFO L225 Difference]: With dead ends: 39 [2022-04-05 05:23:55,218 INFO L226 Difference]: Without dead ends: 25 [2022-04-05 05:23:55,218 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-04-05 05:23:55,219 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 19 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 05:23:55,219 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 45 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 05:23:55,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-04-05 05:23:55,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-04-05 05:23:55,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-05 05:23:55,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2022-04-05 05:23:55,224 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 21 [2022-04-05 05:23:55,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:23:55,225 INFO L478 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2022-04-05 05:23:55,225 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 5 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-05 05:23:55,225 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2022-04-05 05:23:55,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-04-05 05:23:55,226 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:23:55,226 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:23:55,245 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-04-05 05:23:55,439 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-04-05 05:23:55,440 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:23:55,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:23:55,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1934452897, now seen corresponding path program 2 times [2022-04-05 05:23:55,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:23:55,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440529954] [2022-04-05 05:23:55,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:23:55,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:23:55,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:55,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:23:55,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:55,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-04-05 05:23:55,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:55,509 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 05:23:55,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:23:55,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440529954] [2022-04-05 05:23:55,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440529954] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:23:55,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332857546] [2022-04-05 05:23:55,509 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 05:23:55,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:23:55,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:23:55,511 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:23:55,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-05 05:23:55,546 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 05:23:55,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:23:55,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-05 05:23:55,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:23:55,609 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 05:23:55,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:23:55,664 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 05:23:55,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332857546] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:23:55,665 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:23:55,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 11 [2022-04-05 05:23:55,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767305005] [2022-04-05 05:23:55,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:23:55,666 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-05 05:23:55,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:23:55,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-05 05:23:55,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-04-05 05:23:55,667 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-05 05:23:55,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:23:55,790 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2022-04-05 05:23:55,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-05 05:23:55,791 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2022-04-05 05:23:55,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:23:55,793 INFO L225 Difference]: With dead ends: 38 [2022-04-05 05:23:55,793 INFO L226 Difference]: Without dead ends: 36 [2022-04-05 05:23:55,793 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2022-04-05 05:23:55,795 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 30 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 05:23:55,796 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 50 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 05:23:55,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-04-05 05:23:55,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2022-04-05 05:23:55,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 23 states have internal predecessors, (24), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-05 05:23:55,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2022-04-05 05:23:55,810 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 22 [2022-04-05 05:23:55,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:23:55,810 INFO L478 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2022-04-05 05:23:55,810 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-05 05:23:55,810 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2022-04-05 05:23:55,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-04-05 05:23:55,811 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:23:55,811 INFO L499 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:23:55,828 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-05 05:23:56,011 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:23:56,012 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:23:56,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:23:56,012 INFO L85 PathProgramCache]: Analyzing trace with hash 109821273, now seen corresponding path program 3 times [2022-04-05 05:23:56,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:23:56,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346815127] [2022-04-05 05:23:56,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:23:56,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:23:56,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:56,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:23:56,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:56,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-04-05 05:23:56,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:56,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 05:23:56,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:56,119 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-05 05:23:56,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:23:56,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346815127] [2022-04-05 05:23:56,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346815127] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:23:56,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534658515] [2022-04-05 05:23:56,120 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-05 05:23:56,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:23:56,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:23:56,121 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:23:56,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-04-05 05:23:56,156 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-04-05 05:23:56,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:23:56,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 8 conjunts are in the unsatisfiable core [2022-04-05 05:23:56,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:23:56,275 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-05 05:23:56,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:23:56,342 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-05 05:23:56,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534658515] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:23:56,343 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:23:56,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 15 [2022-04-05 05:23:56,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754411099] [2022-04-05 05:23:56,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:23:56,344 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-04-05 05:23:56,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:23:56,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-04-05 05:23:56,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2022-04-05 05:23:56,345 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 15 states, 15 states have (on average 2.0) internal successors, (30), 14 states have internal predecessors, (30), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-05 05:23:56,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:23:56,483 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2022-04-05 05:23:56,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-05 05:23:56,483 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 14 states have internal predecessors, (30), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 29 [2022-04-05 05:23:56,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:23:56,484 INFO L225 Difference]: With dead ends: 50 [2022-04-05 05:23:56,484 INFO L226 Difference]: Without dead ends: 33 [2022-04-05 05:23:56,485 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=111, Invalid=351, Unknown=0, NotChecked=0, Total=462 [2022-04-05 05:23:56,485 INFO L913 BasicCegarLoop]: 14 mSDtfsCounter, 21 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 05:23:56,486 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 41 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 05:23:56,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-04-05 05:23:56,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-04-05 05:23:56,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 24 states have internal predecessors, (25), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-05 05:23:56,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2022-04-05 05:23:56,492 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 29 [2022-04-05 05:23:56,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:23:56,492 INFO L478 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2022-04-05 05:23:56,492 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 14 states have internal predecessors, (30), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-05 05:23:56,492 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2022-04-05 05:23:56,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-04-05 05:23:56,493 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:23:56,493 INFO L499 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:23:56,522 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-04-05 05:23:56,718 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:23:56,719 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:23:56,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:23:56,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1870371363, now seen corresponding path program 4 times [2022-04-05 05:23:56,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:23:56,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608663825] [2022-04-05 05:23:56,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:23:56,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:23:56,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:56,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:23:56,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:56,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 05:23:56,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:56,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-05 05:23:56,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:56,812 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-05 05:23:56,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:23:56,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608663825] [2022-04-05 05:23:56,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608663825] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:23:56,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133994865] [2022-04-05 05:23:56,813 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-05 05:23:56,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:23:56,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:23:56,814 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:23:56,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-04-05 05:23:56,850 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-05 05:23:56,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:23:56,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-05 05:23:56,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:23:56,934 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-05 05:23:56,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:23:57,009 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-05 05:23:57,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133994865] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:23:57,010 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:23:57,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 12 [2022-04-05 05:23:57,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823754063] [2022-04-05 05:23:57,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:23:57,010 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-05 05:23:57,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:23:57,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-05 05:23:57,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-04-05 05:23:57,011 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand has 12 states, 12 states have (on average 2.0) internal successors, (24), 9 states have internal predecessors, (24), 4 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-05 05:23:57,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:23:57,164 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2022-04-05 05:23:57,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-05 05:23:57,165 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 9 states have internal predecessors, (24), 4 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 30 [2022-04-05 05:23:57,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:23:57,167 INFO L225 Difference]: With dead ends: 46 [2022-04-05 05:23:57,167 INFO L226 Difference]: Without dead ends: 44 [2022-04-05 05:23:57,167 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 64 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2022-04-05 05:23:57,168 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 36 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 05:23:57,169 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 40 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 05:23:57,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-04-05 05:23:57,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2022-04-05 05:23:57,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 29 states have internal predecessors, (30), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-05 05:23:57,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2022-04-05 05:23:57,177 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 30 [2022-04-05 05:23:57,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:23:57,179 INFO L478 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2022-04-05 05:23:57,179 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 9 states have internal predecessors, (24), 4 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-05 05:23:57,179 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2022-04-05 05:23:57,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-04-05 05:23:57,181 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:23:57,182 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:23:57,207 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-04-05 05:23:57,395 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:23:57,396 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:23:57,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:23:57,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1565219683, now seen corresponding path program 5 times [2022-04-05 05:23:57,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:23:57,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512042619] [2022-04-05 05:23:57,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:23:57,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:23:57,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:57,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:23:57,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:57,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 05:23:57,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:57,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-05 05:23:57,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:57,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-04-05 05:23:57,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:57,523 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 14 proven. 13 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-04-05 05:23:57,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:23:57,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512042619] [2022-04-05 05:23:57,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512042619] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:23:57,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437742716] [2022-04-05 05:23:57,524 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-05 05:23:57,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:23:57,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:23:57,525 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:23:57,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-04-05 05:23:57,570 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-04-05 05:23:57,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:23:57,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 10 conjunts are in the unsatisfiable core [2022-04-05 05:23:57,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:23:57,729 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-04-05 05:23:57,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:23:57,816 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-04-05 05:23:57,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437742716] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:23:57,817 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:23:57,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 18 [2022-04-05 05:23:57,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794140610] [2022-04-05 05:23:57,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:23:57,818 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-04-05 05:23:57,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:23:57,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-04-05 05:23:57,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2022-04-05 05:23:57,819 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 17 states have internal predecessors, (35), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-04-05 05:23:57,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:23:57,994 INFO L93 Difference]: Finished difference Result 61 states and 66 transitions. [2022-04-05 05:23:57,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-05 05:23:57,995 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 17 states have internal predecessors, (35), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 37 [2022-04-05 05:23:57,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:23:57,996 INFO L225 Difference]: With dead ends: 61 [2022-04-05 05:23:57,996 INFO L226 Difference]: Without dead ends: 41 [2022-04-05 05:23:57,997 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=159, Invalid=543, Unknown=0, NotChecked=0, Total=702 [2022-04-05 05:23:57,997 INFO L913 BasicCegarLoop]: 15 mSDtfsCounter, 21 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 05:23:57,997 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 52 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 05:23:57,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-04-05 05:23:58,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-04-05 05:23:58,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 30 states have internal predecessors, (31), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-05 05:23:58,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2022-04-05 05:23:58,003 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 37 [2022-04-05 05:23:58,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:23:58,004 INFO L478 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2022-04-05 05:23:58,004 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 17 states have internal predecessors, (35), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-04-05 05:23:58,004 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2022-04-05 05:23:58,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-04-05 05:23:58,005 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:23:58,005 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:23:58,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-04-05 05:23:58,219 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:23:58,220 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:23:58,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:23:58,220 INFO L85 PathProgramCache]: Analyzing trace with hash 281970977, now seen corresponding path program 6 times [2022-04-05 05:23:58,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:23:58,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966941597] [2022-04-05 05:23:58,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:23:58,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:23:58,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:58,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:23:58,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:58,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-05 05:23:58,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:58,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-05 05:23:58,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:58,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-05 05:23:58,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:58,313 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 19 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-04-05 05:23:58,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:23:58,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966941597] [2022-04-05 05:23:58,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966941597] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:23:58,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527269514] [2022-04-05 05:23:58,314 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-05 05:23:58,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:23:58,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:23:58,315 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:23:58,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-04-05 05:23:58,361 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-04-05 05:23:58,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:23:58,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 11 conjunts are in the unsatisfiable core [2022-04-05 05:23:58,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:23:58,437 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-04-05 05:23:58,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:23:58,517 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-04-05 05:23:58,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527269514] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:23:58,517 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:23:58,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 13 [2022-04-05 05:23:58,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823247111] [2022-04-05 05:23:58,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:23:58,518 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-05 05:23:58,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:23:58,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-05 05:23:58,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-04-05 05:23:58,519 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 10 states have internal predecessors, (27), 5 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-05 05:23:58,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:23:58,693 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2022-04-05 05:23:58,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-05 05:23:58,694 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 10 states have internal predecessors, (27), 5 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 38 [2022-04-05 05:23:58,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:23:58,697 INFO L225 Difference]: With dead ends: 54 [2022-04-05 05:23:58,697 INFO L226 Difference]: Without dead ends: 52 [2022-04-05 05:23:58,697 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 83 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2022-04-05 05:23:58,699 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 33 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 05:23:58,700 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 50 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 05:23:58,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-04-05 05:23:58,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 48. [2022-04-05 05:23:58,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 35 states have internal predecessors, (36), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-05 05:23:58,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2022-04-05 05:23:58,708 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 38 [2022-04-05 05:23:58,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:23:58,708 INFO L478 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2022-04-05 05:23:58,708 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 10 states have internal predecessors, (27), 5 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-05 05:23:58,709 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2022-04-05 05:23:58,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-04-05 05:23:58,709 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:23:58,709 INFO L499 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:23:58,735 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-04-05 05:23:58,910 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:23:58,910 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:23:58,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:23:58,911 INFO L85 PathProgramCache]: Analyzing trace with hash 2082278617, now seen corresponding path program 7 times [2022-04-05 05:23:58,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:23:58,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516661171] [2022-04-05 05:23:58,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:23:58,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:23:58,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:59,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:23:59,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:59,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-05 05:23:59,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:59,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-05 05:23:59,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:59,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-05 05:23:59,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:59,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-04-05 05:23:59,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:59,041 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 24 proven. 20 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-04-05 05:23:59,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:23:59,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516661171] [2022-04-05 05:23:59,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516661171] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:23:59,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174348003] [2022-04-05 05:23:59,042 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-05 05:23:59,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:23:59,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:23:59,043 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:23:59,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-04-05 05:23:59,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:59,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 12 conjunts are in the unsatisfiable core [2022-04-05 05:23:59,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:23:59,256 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-04-05 05:23:59,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:23:59,367 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-04-05 05:23:59,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174348003] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:23:59,368 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:23:59,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 21 [2022-04-05 05:23:59,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350092599] [2022-04-05 05:23:59,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:23:59,369 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-04-05 05:23:59,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:23:59,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-04-05 05:23:59,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2022-04-05 05:23:59,370 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 11 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-04-05 05:23:59,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:23:59,624 INFO L93 Difference]: Finished difference Result 72 states and 78 transitions. [2022-04-05 05:23:59,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-04-05 05:23:59,624 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 11 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 45 [2022-04-05 05:23:59,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:23:59,626 INFO L225 Difference]: With dead ends: 72 [2022-04-05 05:23:59,626 INFO L226 Difference]: Without dead ends: 49 [2022-04-05 05:23:59,627 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=216, Invalid=776, Unknown=0, NotChecked=0, Total=992 [2022-04-05 05:23:59,628 INFO L913 BasicCegarLoop]: 16 mSDtfsCounter, 21 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 05:23:59,629 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 63 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 05:23:59,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-04-05 05:23:59,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2022-04-05 05:23:59,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 36 states have internal predecessors, (37), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-05 05:23:59,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2022-04-05 05:23:59,640 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 45 [2022-04-05 05:23:59,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:23:59,642 INFO L478 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2022-04-05 05:23:59,642 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 11 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-04-05 05:23:59,642 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2022-04-05 05:23:59,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-04-05 05:23:59,645 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:23:59,645 INFO L499 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:23:59,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-04-05 05:23:59,859 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-04-05 05:23:59,860 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:23:59,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:23:59,860 INFO L85 PathProgramCache]: Analyzing trace with hash 660352349, now seen corresponding path program 8 times [2022-04-05 05:23:59,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:23:59,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167865368] [2022-04-05 05:23:59,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:23:59,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:23:59,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:59,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:23:59,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:59,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-04-05 05:23:59,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:59,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-05 05:23:59,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:59,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-05 05:23:59,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:59,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-04-05 05:23:59,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:59,972 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 18 proven. 31 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-04-05 05:23:59,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:23:59,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167865368] [2022-04-05 05:23:59,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167865368] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:23:59,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539511352] [2022-04-05 05:23:59,973 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 05:23:59,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:23:59,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:23:59,974 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:23:59,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-04-05 05:24:00,015 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 05:24:00,015 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:24:00,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 13 conjunts are in the unsatisfiable core [2022-04-05 05:24:00,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:24:00,127 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 23 proven. 26 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-04-05 05:24:00,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:24:00,225 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 23 proven. 26 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-04-05 05:24:00,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539511352] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:24:00,226 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:24:00,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 14 [2022-04-05 05:24:00,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975465581] [2022-04-05 05:24:00,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:24:00,227 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-05 05:24:00,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:24:00,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-05 05:24:00,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-04-05 05:24:00,228 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 11 states have internal predecessors, (30), 6 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-05 05:24:00,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:24:00,402 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2022-04-05 05:24:00,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-05 05:24:00,403 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 11 states have internal predecessors, (30), 6 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 46 [2022-04-05 05:24:00,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:24:00,403 INFO L225 Difference]: With dead ends: 62 [2022-04-05 05:24:00,403 INFO L226 Difference]: Without dead ends: 60 [2022-04-05 05:24:00,404 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 102 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=431, Unknown=0, NotChecked=0, Total=552 [2022-04-05 05:24:00,404 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 41 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 05:24:00,405 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 40 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 05:24:00,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-04-05 05:24:00,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 56. [2022-04-05 05:24:00,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 40 states have (on average 1.05) internal successors, (42), 41 states have internal predecessors, (42), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-04-05 05:24:00,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2022-04-05 05:24:00,411 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 46 [2022-04-05 05:24:00,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:24:00,411 INFO L478 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2022-04-05 05:24:00,411 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 11 states have internal predecessors, (30), 6 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-05 05:24:00,411 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2022-04-05 05:24:00,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-04-05 05:24:00,412 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:24:00,412 INFO L499 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:24:00,434 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-04-05 05:24:00,623 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:24:00,624 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:24:00,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:24:00,624 INFO L85 PathProgramCache]: Analyzing trace with hash -160076515, now seen corresponding path program 9 times [2022-04-05 05:24:00,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:24:00,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980916995] [2022-04-05 05:24:00,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:24:00,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:24:00,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:00,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:24:00,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:00,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-04-05 05:24:00,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:00,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-05 05:24:00,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:00,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-05 05:24:00,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:00,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-04-05 05:24:00,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:00,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-04-05 05:24:00,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:00,768 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 37 proven. 28 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-04-05 05:24:00,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:24:00,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980916995] [2022-04-05 05:24:00,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980916995] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:24:00,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545127928] [2022-04-05 05:24:00,769 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-05 05:24:00,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:24:00,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:24:00,770 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:24:00,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-04-05 05:24:00,813 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-04-05 05:24:00,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:24:00,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 14 conjunts are in the unsatisfiable core [2022-04-05 05:24:00,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:24:01,051 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 50 proven. 15 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-04-05 05:24:01,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:24:01,160 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 50 proven. 15 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-04-05 05:24:01,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545127928] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:24:01,160 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:24:01,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 24 [2022-04-05 05:24:01,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846161135] [2022-04-05 05:24:01,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:24:01,161 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-04-05 05:24:01,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:24:01,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-04-05 05:24:01,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=426, Unknown=0, NotChecked=0, Total=552 [2022-04-05 05:24:01,162 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand has 24 states, 24 states have (on average 1.875) internal successors, (45), 23 states have internal predecessors, (45), 13 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-04-05 05:24:01,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:24:01,398 INFO L93 Difference]: Finished difference Result 83 states and 90 transitions. [2022-04-05 05:24:01,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-04-05 05:24:01,398 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.875) internal successors, (45), 23 states have internal predecessors, (45), 13 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 53 [2022-04-05 05:24:01,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:24:01,399 INFO L225 Difference]: With dead ends: 83 [2022-04-05 05:24:01,399 INFO L226 Difference]: Without dead ends: 57 [2022-04-05 05:24:01,400 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 109 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=282, Invalid=1050, Unknown=0, NotChecked=0, Total=1332 [2022-04-05 05:24:01,400 INFO L913 BasicCegarLoop]: 17 mSDtfsCounter, 21 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 05:24:01,401 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 49 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 05:24:01,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-04-05 05:24:01,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2022-04-05 05:24:01,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 41 states have (on average 1.048780487804878) internal successors, (43), 42 states have internal predecessors, (43), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-04-05 05:24:01,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2022-04-05 05:24:01,407 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 53 [2022-04-05 05:24:01,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:24:01,407 INFO L478 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2022-04-05 05:24:01,407 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.875) internal successors, (45), 23 states have internal predecessors, (45), 13 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-04-05 05:24:01,407 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2022-04-05 05:24:01,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-04-05 05:24:01,408 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:24:01,408 INFO L499 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:24:01,431 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-04-05 05:24:01,630 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-04-05 05:24:01,630 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:24:01,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:24:01,631 INFO L85 PathProgramCache]: Analyzing trace with hash -203568735, now seen corresponding path program 10 times [2022-04-05 05:24:01,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:24:01,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560326163] [2022-04-05 05:24:01,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:24:01,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:24:01,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:01,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:24:01,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:01,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-05 05:24:01,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:01,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-04-05 05:24:01,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:01,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-04-05 05:24:01,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:01,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-04-05 05:24:01,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:01,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-04-05 05:24:01,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:01,736 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 25 proven. 46 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-04-05 05:24:01,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:24:01,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560326163] [2022-04-05 05:24:01,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560326163] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:24:01,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141345285] [2022-04-05 05:24:01,736 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-05 05:24:01,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:24:01,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:24:01,737 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:24:01,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-04-05 05:24:01,783 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-05 05:24:01,784 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:24:01,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 15 conjunts are in the unsatisfiable core [2022-04-05 05:24:01,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:24:01,883 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 31 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-04-05 05:24:01,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:24:01,983 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 31 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-04-05 05:24:01,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141345285] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:24:01,983 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:24:01,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 15 [2022-04-05 05:24:01,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596788685] [2022-04-05 05:24:01,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:24:01,984 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-04-05 05:24:01,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:24:01,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-04-05 05:24:01,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2022-04-05 05:24:01,985 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand has 15 states, 15 states have (on average 2.2) internal successors, (33), 12 states have internal predecessors, (33), 7 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-05 05:24:02,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:24:02,167 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2022-04-05 05:24:02,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-04-05 05:24:02,168 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2) internal successors, (33), 12 states have internal predecessors, (33), 7 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 54 [2022-04-05 05:24:02,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:24:02,168 INFO L225 Difference]: With dead ends: 70 [2022-04-05 05:24:02,168 INFO L226 Difference]: Without dead ends: 68 [2022-04-05 05:24:02,169 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 121 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=145, Invalid=505, Unknown=0, NotChecked=0, Total=650 [2022-04-05 05:24:02,169 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 44 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 05:24:02,170 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 35 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 05:24:02,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-04-05 05:24:02,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 64. [2022-04-05 05:24:02,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 46 states have (on average 1.0434782608695652) internal successors, (48), 47 states have internal predecessors, (48), 9 states have call successors, (9), 9 states have call predecessors, (9), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2022-04-05 05:24:02,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 65 transitions. [2022-04-05 05:24:02,175 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 65 transitions. Word has length 54 [2022-04-05 05:24:02,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:24:02,176 INFO L478 AbstractCegarLoop]: Abstraction has 64 states and 65 transitions. [2022-04-05 05:24:02,176 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2) internal successors, (33), 12 states have internal predecessors, (33), 7 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-05 05:24:02,176 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 65 transitions. [2022-04-05 05:24:02,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-04-05 05:24:02,177 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:24:02,177 INFO L499 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:24:02,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-04-05 05:24:02,399 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-04-05 05:24:02,399 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:24:02,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:24:02,400 INFO L85 PathProgramCache]: Analyzing trace with hash 368852057, now seen corresponding path program 11 times [2022-04-05 05:24:02,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:24:02,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254938864] [2022-04-05 05:24:02,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:24:02,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:24:02,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:02,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:24:02,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:02,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-05 05:24:02,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:02,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-04-05 05:24:02,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:02,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-04-05 05:24:02,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:02,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-04-05 05:24:02,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:02,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-04-05 05:24:02,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:02,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-04-05 05:24:02,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:02,559 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 53 proven. 37 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-04-05 05:24:02,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:24:02,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254938864] [2022-04-05 05:24:02,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254938864] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:24:02,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951041555] [2022-04-05 05:24:02,560 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-05 05:24:02,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:24:02,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:24:02,561 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:24:02,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-04-05 05:24:02,616 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-04-05 05:24:02,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:24:02,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 16 conjunts are in the unsatisfiable core [2022-04-05 05:24:02,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:24:02,904 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 69 proven. 21 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-04-05 05:24:02,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:24:03,039 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 69 proven. 21 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-04-05 05:24:03,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951041555] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:24:03,040 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:24:03,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 27 [2022-04-05 05:24:03,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663870215] [2022-04-05 05:24:03,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:24:03,041 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-04-05 05:24:03,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:24:03,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-04-05 05:24:03,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=543, Unknown=0, NotChecked=0, Total=702 [2022-04-05 05:24:03,042 INFO L87 Difference]: Start difference. First operand 64 states and 65 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 26 states have internal predecessors, (50), 15 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-04-05 05:24:03,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:24:03,293 INFO L93 Difference]: Finished difference Result 94 states and 102 transitions. [2022-04-05 05:24:03,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-04-05 05:24:03,294 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 26 states have internal predecessors, (50), 15 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 61 [2022-04-05 05:24:03,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:24:03,294 INFO L225 Difference]: With dead ends: 94 [2022-04-05 05:24:03,294 INFO L226 Difference]: Without dead ends: 65 [2022-04-05 05:24:03,296 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=357, Invalid=1365, Unknown=0, NotChecked=0, Total=1722 [2022-04-05 05:24:03,296 INFO L913 BasicCegarLoop]: 18 mSDtfsCounter, 21 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 05:24:03,296 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 40 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 05:24:03,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-04-05 05:24:03,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2022-04-05 05:24:03,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 47 states have (on average 1.0425531914893618) internal successors, (49), 48 states have internal predecessors, (49), 9 states have call successors, (9), 9 states have call predecessors, (9), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2022-04-05 05:24:03,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2022-04-05 05:24:03,303 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 61 [2022-04-05 05:24:03,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:24:03,303 INFO L478 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2022-04-05 05:24:03,303 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 26 states have internal predecessors, (50), 15 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-04-05 05:24:03,303 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2022-04-05 05:24:03,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-04-05 05:24:03,304 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:24:03,304 INFO L499 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:24:03,331 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-04-05 05:24:03,526 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-04-05 05:24:03,526 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:24:03,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:24:03,527 INFO L85 PathProgramCache]: Analyzing trace with hash 915526877, now seen corresponding path program 12 times [2022-04-05 05:24:03,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:24:03,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105841711] [2022-04-05 05:24:03,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:24:03,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:24:03,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:03,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:24:03,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:03,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-05 05:24:03,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:03,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-04-05 05:24:03,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:03,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-04-05 05:24:03,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:03,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-04-05 05:24:03,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:03,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-04-05 05:24:03,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:03,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-04-05 05:24:03,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:03,641 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 33 proven. 64 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-04-05 05:24:03,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:24:03,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105841711] [2022-04-05 05:24:03,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105841711] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:24:03,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771576488] [2022-04-05 05:24:03,642 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-05 05:24:03,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:24:03,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:24:03,643 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:24:03,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-04-05 05:24:03,687 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-04-05 05:24:03,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:24:03,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 17 conjunts are in the unsatisfiable core [2022-04-05 05:24:03,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:24:03,824 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 40 proven. 57 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-04-05 05:24:03,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:24:03,965 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 40 proven. 57 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-04-05 05:24:03,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771576488] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:24:03,966 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:24:03,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 16 [2022-04-05 05:24:03,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419068748] [2022-04-05 05:24:03,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:24:03,966 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-05 05:24:03,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:24:03,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-05 05:24:03,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2022-04-05 05:24:03,967 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand has 16 states, 16 states have (on average 2.25) internal successors, (36), 13 states have internal predecessors, (36), 8 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-04-05 05:24:04,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:24:04,182 INFO L93 Difference]: Finished difference Result 78 states and 80 transitions. [2022-04-05 05:24:04,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-04-05 05:24:04,183 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 13 states have internal predecessors, (36), 8 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 62 [2022-04-05 05:24:04,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:24:04,183 INFO L225 Difference]: With dead ends: 78 [2022-04-05 05:24:04,184 INFO L226 Difference]: Without dead ends: 76 [2022-04-05 05:24:04,184 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 140 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2022-04-05 05:24:04,185 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 41 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 05:24:04,185 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 55 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 05:24:04,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-04-05 05:24:04,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 72. [2022-04-05 05:24:04,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 52 states have (on average 1.0384615384615385) internal successors, (54), 53 states have internal predecessors, (54), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2022-04-05 05:24:04,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 73 transitions. [2022-04-05 05:24:04,191 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 73 transitions. Word has length 62 [2022-04-05 05:24:04,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:24:04,191 INFO L478 AbstractCegarLoop]: Abstraction has 72 states and 73 transitions. [2022-04-05 05:24:04,191 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 13 states have internal predecessors, (36), 8 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-04-05 05:24:04,191 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 73 transitions. [2022-04-05 05:24:04,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-04-05 05:24:04,192 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:24:04,192 INFO L499 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:24:04,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-04-05 05:24:04,392 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-04-05 05:24:04,393 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:24:04,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:24:04,393 INFO L85 PathProgramCache]: Analyzing trace with hash 645682589, now seen corresponding path program 13 times [2022-04-05 05:24:04,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:24:04,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474112835] [2022-04-05 05:24:04,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:24:04,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:24:04,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:04,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:24:04,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:04,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-05 05:24:04,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:04,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-04-05 05:24:04,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:04,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-04-05 05:24:04,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:04,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-04-05 05:24:04,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:04,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-04-05 05:24:04,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:04,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-04-05 05:24:04,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:04,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-04-05 05:24:04,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:04,592 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 72 proven. 47 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-04-05 05:24:04,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:24:04,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474112835] [2022-04-05 05:24:04,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474112835] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:24:04,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049221384] [2022-04-05 05:24:04,593 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-05 05:24:04,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:24:04,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:24:04,594 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:24:04,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-04-05 05:24:04,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:04,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 18 conjunts are in the unsatisfiable core [2022-04-05 05:24:04,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:24:04,944 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 91 proven. 28 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-04-05 05:24:04,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:24:05,086 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 91 proven. 28 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-04-05 05:24:05,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049221384] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:24:05,087 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:24:05,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 30 [2022-04-05 05:24:05,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587803433] [2022-04-05 05:24:05,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:24:05,087 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-04-05 05:24:05,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:24:05,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-04-05 05:24:05,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=674, Unknown=0, NotChecked=0, Total=870 [2022-04-05 05:24:05,088 INFO L87 Difference]: Start difference. First operand 72 states and 73 transitions. Second operand has 30 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 29 states have internal predecessors, (55), 17 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-04-05 05:24:05,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:24:05,408 INFO L93 Difference]: Finished difference Result 105 states and 114 transitions. [2022-04-05 05:24:05,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-04-05 05:24:05,409 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 29 states have internal predecessors, (55), 17 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Word has length 69 [2022-04-05 05:24:05,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:24:05,409 INFO L225 Difference]: With dead ends: 105 [2022-04-05 05:24:05,409 INFO L226 Difference]: Without dead ends: 73 [2022-04-05 05:24:05,410 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 143 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 555 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=441, Invalid=1721, Unknown=0, NotChecked=0, Total=2162 [2022-04-05 05:24:05,411 INFO L913 BasicCegarLoop]: 19 mSDtfsCounter, 21 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 05:24:05,411 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 71 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 05:24:05,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-04-05 05:24:05,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2022-04-05 05:24:05,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 53 states have (on average 1.0377358490566038) internal successors, (55), 54 states have internal predecessors, (55), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2022-04-05 05:24:05,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2022-04-05 05:24:05,417 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 69 [2022-04-05 05:24:05,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:24:05,417 INFO L478 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2022-04-05 05:24:05,418 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 29 states have internal predecessors, (55), 17 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-04-05 05:24:05,418 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2022-04-05 05:24:05,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-04-05 05:24:05,418 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:24:05,419 INFO L499 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:24:05,435 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-04-05 05:24:05,623 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:24:05,623 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:24:05,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:24:05,624 INFO L85 PathProgramCache]: Analyzing trace with hash -146593247, now seen corresponding path program 14 times [2022-04-05 05:24:05,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:24:05,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977541021] [2022-04-05 05:24:05,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:24:05,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:24:05,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:05,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:24:05,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:05,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-04-05 05:24:05,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:05,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-04-05 05:24:05,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:05,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-04-05 05:24:05,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:05,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-04-05 05:24:05,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:05,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-04-05 05:24:05,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:05,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-04-05 05:24:05,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:05,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-04-05 05:24:05,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:05,767 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 42 proven. 85 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-04-05 05:24:05,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:24:05,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977541021] [2022-04-05 05:24:05,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977541021] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:24:05,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821147750] [2022-04-05 05:24:05,767 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 05:24:05,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:24:05,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:24:05,768 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:24:05,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-04-05 05:24:05,821 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 05:24:05,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:24:05,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 19 conjunts are in the unsatisfiable core [2022-04-05 05:24:05,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:24:05,959 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 50 proven. 77 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-04-05 05:24:05,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:24:06,099 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 50 proven. 77 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-04-05 05:24:06,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821147750] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:24:06,099 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:24:06,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 17 [2022-04-05 05:24:06,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560481989] [2022-04-05 05:24:06,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:24:06,100 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-04-05 05:24:06,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:24:06,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-04-05 05:24:06,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2022-04-05 05:24:06,101 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 14 states have internal predecessors, (39), 9 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-04-05 05:24:06,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:24:06,358 INFO L93 Difference]: Finished difference Result 86 states and 88 transitions. [2022-04-05 05:24:06,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-04-05 05:24:06,358 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 14 states have internal predecessors, (39), 9 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 70 [2022-04-05 05:24:06,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:24:06,360 INFO L225 Difference]: With dead ends: 86 [2022-04-05 05:24:06,360 INFO L226 Difference]: Without dead ends: 84 [2022-04-05 05:24:06,361 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 159 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=202, Invalid=668, Unknown=0, NotChecked=0, Total=870 [2022-04-05 05:24:06,361 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 44 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 05:24:06,361 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 55 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 05:24:06,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-04-05 05:24:06,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 80. [2022-04-05 05:24:06,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 58 states have (on average 1.0344827586206897) internal successors, (60), 59 states have internal predecessors, (60), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2022-04-05 05:24:06,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 81 transitions. [2022-04-05 05:24:06,369 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 81 transitions. Word has length 70 [2022-04-05 05:24:06,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:24:06,370 INFO L478 AbstractCegarLoop]: Abstraction has 80 states and 81 transitions. [2022-04-05 05:24:06,370 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 14 states have internal predecessors, (39), 9 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-04-05 05:24:06,370 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 81 transitions. [2022-04-05 05:24:06,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-04-05 05:24:06,372 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:24:06,372 INFO L499 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:24:06,388 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-04-05 05:24:06,572 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-04-05 05:24:06,573 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:24:06,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:24:06,573 INFO L85 PathProgramCache]: Analyzing trace with hash -933147687, now seen corresponding path program 15 times [2022-04-05 05:24:06,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:24:06,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310258301] [2022-04-05 05:24:06,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:24:06,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:24:06,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:06,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:24:06,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:06,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-04-05 05:24:06,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:06,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-04-05 05:24:06,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:06,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-04-05 05:24:06,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:06,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-04-05 05:24:06,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:06,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-04-05 05:24:06,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:06,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-04-05 05:24:06,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:06,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-04-05 05:24:06,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:06,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-04-05 05:24:06,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:06,789 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 94 proven. 58 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-04-05 05:24:06,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:24:06,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310258301] [2022-04-05 05:24:06,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310258301] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:24:06,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297540662] [2022-04-05 05:24:06,789 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-05 05:24:06,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:24:06,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:24:06,791 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:24:06,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-04-05 05:24:06,849 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-04-05 05:24:06,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:24:06,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 20 conjunts are in the unsatisfiable core [2022-04-05 05:24:06,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:24:07,159 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 116 proven. 36 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-04-05 05:24:07,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:24:07,340 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 116 proven. 36 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-04-05 05:24:07,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297540662] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:24:07,340 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:24:07,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 21] total 33 [2022-04-05 05:24:07,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399601984] [2022-04-05 05:24:07,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:24:07,342 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-04-05 05:24:07,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:24:07,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-04-05 05:24:07,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=819, Unknown=0, NotChecked=0, Total=1056 [2022-04-05 05:24:07,343 INFO L87 Difference]: Start difference. First operand 80 states and 81 transitions. Second operand has 33 states, 33 states have (on average 1.8181818181818181) internal successors, (60), 32 states have internal predecessors, (60), 19 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-04-05 05:24:07,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:24:07,725 INFO L93 Difference]: Finished difference Result 116 states and 126 transitions. [2022-04-05 05:24:07,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-04-05 05:24:07,726 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.8181818181818181) internal successors, (60), 32 states have internal predecessors, (60), 19 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Word has length 77 [2022-04-05 05:24:07,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:24:07,727 INFO L225 Difference]: With dead ends: 116 [2022-04-05 05:24:07,727 INFO L226 Difference]: Without dead ends: 81 [2022-04-05 05:24:07,728 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 160 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 689 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=534, Invalid=2118, Unknown=0, NotChecked=0, Total=2652 [2022-04-05 05:24:07,729 INFO L913 BasicCegarLoop]: 20 mSDtfsCounter, 21 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-05 05:24:07,729 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 57 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-05 05:24:07,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-04-05 05:24:07,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2022-04-05 05:24:07,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 59 states have (on average 1.0338983050847457) internal successors, (61), 60 states have internal predecessors, (61), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2022-04-05 05:24:07,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2022-04-05 05:24:07,738 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 77 [2022-04-05 05:24:07,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:24:07,738 INFO L478 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2022-04-05 05:24:07,738 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.8181818181818181) internal successors, (60), 32 states have internal predecessors, (60), 19 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-04-05 05:24:07,738 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2022-04-05 05:24:07,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-04-05 05:24:07,739 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:24:07,739 INFO L499 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:24:07,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-04-05 05:24:07,940 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-04-05 05:24:07,940 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:24:07,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:24:07,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1839375267, now seen corresponding path program 16 times [2022-04-05 05:24:07,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:24:07,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84933477] [2022-04-05 05:24:07,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:24:07,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:24:07,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:08,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:24:08,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:08,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 05:24:08,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:08,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-05 05:24:08,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:08,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-05 05:24:08,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:08,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-04-05 05:24:08,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:08,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-04-05 05:24:08,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:08,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-04-05 05:24:08,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:08,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-04-05 05:24:08,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:08,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-04-05 05:24:08,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:08,095 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 52 proven. 109 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-04-05 05:24:08,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:24:08,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84933477] [2022-04-05 05:24:08,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84933477] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:24:08,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964617195] [2022-04-05 05:24:08,111 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-05 05:24:08,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:24:08,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:24:08,116 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:24:08,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-04-05 05:24:08,173 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-05 05:24:08,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:24:08,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 21 conjunts are in the unsatisfiable core [2022-04-05 05:24:08,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:24:08,307 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 61 proven. 100 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-04-05 05:24:08,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:24:08,451 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 61 proven. 100 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-04-05 05:24:08,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964617195] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:24:08,451 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:24:08,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 18 [2022-04-05 05:24:08,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937311220] [2022-04-05 05:24:08,452 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:24:08,452 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-04-05 05:24:08,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:24:08,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-04-05 05:24:08,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2022-04-05 05:24:08,453 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 15 states have internal predecessors, (42), 10 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-04-05 05:24:08,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:24:08,735 INFO L93 Difference]: Finished difference Result 94 states and 96 transitions. [2022-04-05 05:24:08,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-04-05 05:24:08,735 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 15 states have internal predecessors, (42), 10 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 78 [2022-04-05 05:24:08,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:24:08,736 INFO L225 Difference]: With dead ends: 94 [2022-04-05 05:24:08,736 INFO L226 Difference]: Without dead ends: 92 [2022-04-05 05:24:08,737 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 178 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=235, Invalid=757, Unknown=0, NotChecked=0, Total=992 [2022-04-05 05:24:08,737 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 45 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-05 05:24:08,737 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 55 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-05 05:24:08,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-04-05 05:24:08,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 88. [2022-04-05 05:24:08,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 64 states have (on average 1.03125) internal successors, (66), 65 states have internal predecessors, (66), 12 states have call successors, (12), 12 states have call predecessors, (12), 11 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2022-04-05 05:24:08,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 89 transitions. [2022-04-05 05:24:08,746 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 89 transitions. Word has length 78 [2022-04-05 05:24:08,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:24:08,746 INFO L478 AbstractCegarLoop]: Abstraction has 88 states and 89 transitions. [2022-04-05 05:24:08,746 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 15 states have internal predecessors, (42), 10 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-04-05 05:24:08,746 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 89 transitions. [2022-04-05 05:24:08,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-04-05 05:24:08,747 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:24:08,747 INFO L499 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:24:08,769 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-04-05 05:24:08,947 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:24:08,948 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:24:08,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:24:08,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1349427683, now seen corresponding path program 17 times [2022-04-05 05:24:08,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:24:08,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140815512] [2022-04-05 05:24:08,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:24:08,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:24:08,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:09,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:24:09,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:09,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 05:24:09,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:09,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-05 05:24:09,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:09,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-05 05:24:09,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:09,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-04-05 05:24:09,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:09,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-04-05 05:24:09,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:09,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-04-05 05:24:09,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:09,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-04-05 05:24:09,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:09,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-04-05 05:24:09,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:09,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-04-05 05:24:09,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:09,168 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 119 proven. 70 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-04-05 05:24:09,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:24:09,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140815512] [2022-04-05 05:24:09,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140815512] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:24:09,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042013381] [2022-04-05 05:24:09,168 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-05 05:24:09,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:24:09,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:24:09,172 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:24:09,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-04-05 05:24:09,234 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2022-04-05 05:24:09,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:24:09,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 22 conjunts are in the unsatisfiable core [2022-04-05 05:24:09,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:24:09,583 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 144 proven. 45 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-04-05 05:24:09,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:24:09,760 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 144 proven. 45 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-04-05 05:24:09,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042013381] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:24:09,761 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:24:09,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 23] total 36 [2022-04-05 05:24:09,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929660563] [2022-04-05 05:24:09,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:24:09,762 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-04-05 05:24:09,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:24:09,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-04-05 05:24:09,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=978, Unknown=0, NotChecked=0, Total=1260 [2022-04-05 05:24:09,763 INFO L87 Difference]: Start difference. First operand 88 states and 89 transitions. Second operand has 36 states, 36 states have (on average 1.8055555555555556) internal successors, (65), 35 states have internal predecessors, (65), 21 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-04-05 05:24:10,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:24:10,173 INFO L93 Difference]: Finished difference Result 127 states and 138 transitions. [2022-04-05 05:24:10,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-04-05 05:24:10,174 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.8055555555555556) internal successors, (65), 35 states have internal predecessors, (65), 21 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 85 [2022-04-05 05:24:10,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:24:10,175 INFO L225 Difference]: With dead ends: 127 [2022-04-05 05:24:10,175 INFO L226 Difference]: Without dead ends: 89 [2022-04-05 05:24:10,176 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 177 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 837 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=636, Invalid=2556, Unknown=0, NotChecked=0, Total=3192 [2022-04-05 05:24:10,177 INFO L913 BasicCegarLoop]: 21 mSDtfsCounter, 21 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-05 05:24:10,177 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 43 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-05 05:24:10,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-04-05 05:24:10,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2022-04-05 05:24:10,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 65 states have (on average 1.0307692307692307) internal successors, (67), 66 states have internal predecessors, (67), 12 states have call successors, (12), 12 states have call predecessors, (12), 11 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2022-04-05 05:24:10,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 90 transitions. [2022-04-05 05:24:10,194 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 90 transitions. Word has length 85 [2022-04-05 05:24:10,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:24:10,194 INFO L478 AbstractCegarLoop]: Abstraction has 89 states and 90 transitions. [2022-04-05 05:24:10,194 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.8055555555555556) internal successors, (65), 35 states have internal predecessors, (65), 21 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-04-05 05:24:10,194 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 90 transitions. [2022-04-05 05:24:10,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-04-05 05:24:10,196 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:24:10,196 INFO L499 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:24:10,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-04-05 05:24:10,413 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:24:10,413 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:24:10,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:24:10,414 INFO L85 PathProgramCache]: Analyzing trace with hash 2009508513, now seen corresponding path program 18 times [2022-04-05 05:24:10,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:24:10,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538331804] [2022-04-05 05:24:10,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:24:10,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:24:10,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:10,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:24:10,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:10,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-05 05:24:10,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:10,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-04-05 05:24:10,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:10,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-04-05 05:24:10,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:10,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-04-05 05:24:10,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:10,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-04-05 05:24:10,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:10,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-04-05 05:24:10,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:10,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-04-05 05:24:10,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:10,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-04-05 05:24:10,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:10,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-04-05 05:24:10,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:10,598 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 63 proven. 136 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-04-05 05:24:10,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:24:10,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538331804] [2022-04-05 05:24:10,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538331804] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:24:10,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393605654] [2022-04-05 05:24:10,598 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-05 05:24:10,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:24:10,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:24:10,599 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:24:10,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-04-05 05:24:10,646 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2022-04-05 05:24:10,647 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:24:10,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 23 conjunts are in the unsatisfiable core [2022-04-05 05:24:10,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:24:10,821 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 73 proven. 126 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-04-05 05:24:10,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:24:10,983 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 73 proven. 126 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-04-05 05:24:10,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393605654] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:24:10,983 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:24:10,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 19 [2022-04-05 05:24:10,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456953207] [2022-04-05 05:24:10,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:24:10,984 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-04-05 05:24:10,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:24:10,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-04-05 05:24:10,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2022-04-05 05:24:10,985 INFO L87 Difference]: Start difference. First operand 89 states and 90 transitions. Second operand has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 16 states have internal predecessors, (45), 11 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-04-05 05:24:11,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:24:11,194 INFO L93 Difference]: Finished difference Result 102 states and 104 transitions. [2022-04-05 05:24:11,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-04-05 05:24:11,194 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 16 states have internal predecessors, (45), 11 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 86 [2022-04-05 05:24:11,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:24:11,195 INFO L225 Difference]: With dead ends: 102 [2022-04-05 05:24:11,195 INFO L226 Difference]: Without dead ends: 100 [2022-04-05 05:24:11,195 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 197 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=271, Invalid=851, Unknown=0, NotChecked=0, Total=1122 [2022-04-05 05:24:11,196 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 58 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 05:24:11,196 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 30 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 05:24:11,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-04-05 05:24:11,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 96. [2022-04-05 05:24:11,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 70 states have (on average 1.0285714285714285) internal successors, (72), 71 states have internal predecessors, (72), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2022-04-05 05:24:11,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 97 transitions. [2022-04-05 05:24:11,202 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 97 transitions. Word has length 86 [2022-04-05 05:24:11,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:24:11,203 INFO L478 AbstractCegarLoop]: Abstraction has 96 states and 97 transitions. [2022-04-05 05:24:11,203 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 16 states have internal predecessors, (45), 11 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-04-05 05:24:11,203 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 97 transitions. [2022-04-05 05:24:11,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-04-05 05:24:11,204 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:24:11,204 INFO L499 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:24:11,221 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-04-05 05:24:11,411 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:24:11,411 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:24:11,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:24:11,412 INFO L85 PathProgramCache]: Analyzing trace with hash -981189799, now seen corresponding path program 19 times [2022-04-05 05:24:11,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:24:11,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274379781] [2022-04-05 05:24:11,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:24:11,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:24:11,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:11,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:24:11,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:11,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-05 05:24:11,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:11,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-04-05 05:24:11,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:11,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-04-05 05:24:11,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:11,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-04-05 05:24:11,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:11,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-04-05 05:24:11,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:11,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-04-05 05:24:11,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:11,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-04-05 05:24:11,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:11,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-04-05 05:24:11,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:11,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-04-05 05:24:11,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:11,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-04-05 05:24:11,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:11,674 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 147 proven. 83 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-04-05 05:24:11,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:24:11,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274379781] [2022-04-05 05:24:11,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274379781] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:24:11,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890017594] [2022-04-05 05:24:11,675 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-05 05:24:11,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:24:11,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:24:11,680 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:24:11,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-04-05 05:24:11,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:11,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 24 conjunts are in the unsatisfiable core [2022-04-05 05:24:11,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:24:12,171 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 175 proven. 55 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-04-05 05:24:12,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:24:12,349 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 175 proven. 55 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-04-05 05:24:12,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890017594] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:24:12,349 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:24:12,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 25] total 39 [2022-04-05 05:24:12,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003290235] [2022-04-05 05:24:12,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:24:12,350 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-04-05 05:24:12,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:24:12,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-04-05 05:24:12,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=331, Invalid=1151, Unknown=0, NotChecked=0, Total=1482 [2022-04-05 05:24:12,351 INFO L87 Difference]: Start difference. First operand 96 states and 97 transitions. Second operand has 39 states, 39 states have (on average 1.794871794871795) internal successors, (70), 38 states have internal predecessors, (70), 23 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-04-05 05:24:12,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:24:12,778 INFO L93 Difference]: Finished difference Result 138 states and 150 transitions. [2022-04-05 05:24:12,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-04-05 05:24:12,780 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.794871794871795) internal successors, (70), 38 states have internal predecessors, (70), 23 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Word has length 93 [2022-04-05 05:24:12,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:24:12,781 INFO L225 Difference]: With dead ends: 138 [2022-04-05 05:24:12,781 INFO L226 Difference]: Without dead ends: 97 [2022-04-05 05:24:12,782 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 194 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 999 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=747, Invalid=3035, Unknown=0, NotChecked=0, Total=3782 [2022-04-05 05:24:12,783 INFO L913 BasicCegarLoop]: 22 mSDtfsCounter, 21 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-05 05:24:12,783 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 59 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-05 05:24:12,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-04-05 05:24:12,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2022-04-05 05:24:12,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 71 states have (on average 1.028169014084507) internal successors, (73), 72 states have internal predecessors, (73), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2022-04-05 05:24:12,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 98 transitions. [2022-04-05 05:24:12,791 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 98 transitions. Word has length 93 [2022-04-05 05:24:12,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:24:12,792 INFO L478 AbstractCegarLoop]: Abstraction has 97 states and 98 transitions. [2022-04-05 05:24:12,792 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.794871794871795) internal successors, (70), 38 states have internal predecessors, (70), 23 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-04-05 05:24:12,792 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 98 transitions. [2022-04-05 05:24:12,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-04-05 05:24:12,793 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:24:12,793 INFO L499 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:24:12,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-04-05 05:24:13,018 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-04-05 05:24:13,019 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:24:13,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:24:13,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1291240413, now seen corresponding path program 20 times [2022-04-05 05:24:13,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:24:13,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381950028] [2022-04-05 05:24:13,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:24:13,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:24:13,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:13,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:24:13,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:13,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-05 05:24:13,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:13,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-05 05:24:13,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:13,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-04-05 05:24:13,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:13,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-04-05 05:24:13,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:13,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-04-05 05:24:13,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:13,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-04-05 05:24:13,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:13,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-04-05 05:24:13,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:13,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-04-05 05:24:13,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:13,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-04-05 05:24:13,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:13,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-04-05 05:24:13,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:13,222 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 75 proven. 166 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-04-05 05:24:13,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:24:13,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381950028] [2022-04-05 05:24:13,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381950028] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:24:13,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581982427] [2022-04-05 05:24:13,222 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 05:24:13,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:24:13,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:24:13,224 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:24:13,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-04-05 05:24:13,302 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 05:24:13,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:24:13,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 25 conjunts are in the unsatisfiable core [2022-04-05 05:24:13,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:24:13,501 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 86 proven. 155 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-04-05 05:24:13,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:24:13,709 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 86 proven. 155 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-04-05 05:24:13,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581982427] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:24:13,710 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:24:13,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 20 [2022-04-05 05:24:13,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145428362] [2022-04-05 05:24:13,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:24:13,711 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-04-05 05:24:13,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:24:13,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-04-05 05:24:13,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2022-04-05 05:24:13,711 INFO L87 Difference]: Start difference. First operand 97 states and 98 transitions. Second operand has 20 states, 20 states have (on average 2.4) internal successors, (48), 17 states have internal predecessors, (48), 12 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-04-05 05:24:13,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:24:13,987 INFO L93 Difference]: Finished difference Result 110 states and 112 transitions. [2022-04-05 05:24:13,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-04-05 05:24:13,988 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 17 states have internal predecessors, (48), 12 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Word has length 94 [2022-04-05 05:24:13,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:24:13,989 INFO L225 Difference]: With dead ends: 110 [2022-04-05 05:24:13,989 INFO L226 Difference]: Without dead ends: 108 [2022-04-05 05:24:13,989 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 216 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=310, Invalid=950, Unknown=0, NotChecked=0, Total=1260 [2022-04-05 05:24:13,990 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 51 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 05:24:13,990 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 40 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 05:24:13,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-04-05 05:24:13,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 104. [2022-04-05 05:24:13,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 76 states have (on average 1.0263157894736843) internal successors, (78), 77 states have internal predecessors, (78), 14 states have call successors, (14), 14 states have call predecessors, (14), 13 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2022-04-05 05:24:13,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 105 transitions. [2022-04-05 05:24:13,997 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 105 transitions. Word has length 94 [2022-04-05 05:24:13,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:24:13,998 INFO L478 AbstractCegarLoop]: Abstraction has 104 states and 105 transitions. [2022-04-05 05:24:13,998 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 17 states have internal predecessors, (48), 12 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-04-05 05:24:13,998 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 105 transitions. [2022-04-05 05:24:13,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-04-05 05:24:13,998 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:24:13,998 INFO L499 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:24:14,019 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-04-05 05:24:14,215 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-04-05 05:24:14,215 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:24:14,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:24:14,216 INFO L85 PathProgramCache]: Analyzing trace with hash 276596381, now seen corresponding path program 21 times [2022-04-05 05:24:14,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:24:14,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113527459] [2022-04-05 05:24:14,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:24:14,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:24:14,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:14,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:24:14,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:14,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-05 05:24:14,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:14,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-05 05:24:14,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:14,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-04-05 05:24:14,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:14,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-04-05 05:24:14,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:14,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-04-05 05:24:14,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:14,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-04-05 05:24:14,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:14,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-04-05 05:24:14,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:14,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-04-05 05:24:14,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:14,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-04-05 05:24:14,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:14,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-04-05 05:24:14,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:14,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-04-05 05:24:14,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:14,515 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 178 proven. 97 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-04-05 05:24:14,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:24:14,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113527459] [2022-04-05 05:24:14,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113527459] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:24:14,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542789544] [2022-04-05 05:24:14,516 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-05 05:24:14,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:24:14,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:24:14,517 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:24:14,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-04-05 05:24:14,584 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2022-04-05 05:24:14,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:24:14,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 26 conjunts are in the unsatisfiable core [2022-04-05 05:24:14,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:24:15,059 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 209 proven. 66 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-04-05 05:24:15,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:24:15,280 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 209 proven. 66 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-04-05 05:24:15,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1542789544] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:24:15,280 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:24:15,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27, 27] total 42 [2022-04-05 05:24:15,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655325188] [2022-04-05 05:24:15,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:24:15,282 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-04-05 05:24:15,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:24:15,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-04-05 05:24:15,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=384, Invalid=1338, Unknown=0, NotChecked=0, Total=1722 [2022-04-05 05:24:15,283 INFO L87 Difference]: Start difference. First operand 104 states and 105 transitions. Second operand has 42 states, 42 states have (on average 1.7857142857142858) internal successors, (75), 41 states have internal predecessors, (75), 25 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-04-05 05:24:15,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:24:15,780 INFO L93 Difference]: Finished difference Result 149 states and 162 transitions. [2022-04-05 05:24:15,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-04-05 05:24:15,780 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.7857142857142858) internal successors, (75), 41 states have internal predecessors, (75), 25 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Word has length 101 [2022-04-05 05:24:15,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:24:15,781 INFO L225 Difference]: With dead ends: 149 [2022-04-05 05:24:15,781 INFO L226 Difference]: Without dead ends: 105 [2022-04-05 05:24:15,783 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 211 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1175 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=867, Invalid=3555, Unknown=0, NotChecked=0, Total=4422 [2022-04-05 05:24:15,783 INFO L913 BasicCegarLoop]: 23 mSDtfsCounter, 21 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-05 05:24:15,784 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 70 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-05 05:24:15,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-04-05 05:24:15,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2022-04-05 05:24:15,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 77 states have (on average 1.025974025974026) internal successors, (79), 78 states have internal predecessors, (79), 14 states have call successors, (14), 14 states have call predecessors, (14), 13 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2022-04-05 05:24:15,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 106 transitions. [2022-04-05 05:24:15,791 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 106 transitions. Word has length 101 [2022-04-05 05:24:15,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:24:15,792 INFO L478 AbstractCegarLoop]: Abstraction has 105 states and 106 transitions. [2022-04-05 05:24:15,792 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.7857142857142858) internal successors, (75), 41 states have internal predecessors, (75), 25 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-04-05 05:24:15,792 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 106 transitions. [2022-04-05 05:24:15,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-04-05 05:24:15,793 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:24:15,793 INFO L499 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:24:15,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-04-05 05:24:16,007 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:24:16,008 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:24:16,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:24:16,008 INFO L85 PathProgramCache]: Analyzing trace with hash -735032543, now seen corresponding path program 22 times [2022-04-05 05:24:16,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:24:16,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625812189] [2022-04-05 05:24:16,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:24:16,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:24:16,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:16,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:24:16,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:16,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-05 05:24:16,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:16,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-05 05:24:16,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:16,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-04-05 05:24:16,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:16,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-04-05 05:24:16,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:16,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-04-05 05:24:16,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:16,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-04-05 05:24:16,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:16,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-04-05 05:24:16,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:16,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-04-05 05:24:16,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:16,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-04-05 05:24:16,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:16,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-04-05 05:24:16,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:16,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-04-05 05:24:16,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:16,191 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 88 proven. 199 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-04-05 05:24:16,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:24:16,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625812189] [2022-04-05 05:24:16,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625812189] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:24:16,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736664556] [2022-04-05 05:24:16,191 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-05 05:24:16,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:24:16,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:24:16,193 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:24:16,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-04-05 05:24:16,253 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-05 05:24:16,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:24:16,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 27 conjunts are in the unsatisfiable core [2022-04-05 05:24:16,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:24:16,444 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 100 proven. 187 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-04-05 05:24:16,444 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:24:16,665 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 100 proven. 187 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-04-05 05:24:16,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736664556] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:24:16,665 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:24:16,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 21 [2022-04-05 05:24:16,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032857982] [2022-04-05 05:24:16,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:24:16,667 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-04-05 05:24:16,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:24:16,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-04-05 05:24:16,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2022-04-05 05:24:16,668 INFO L87 Difference]: Start difference. First operand 105 states and 106 transitions. Second operand has 21 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 18 states have internal predecessors, (51), 13 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-04-05 05:24:16,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:24:16,962 INFO L93 Difference]: Finished difference Result 118 states and 120 transitions. [2022-04-05 05:24:16,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-04-05 05:24:16,962 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 18 states have internal predecessors, (51), 13 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 102 [2022-04-05 05:24:16,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:24:16,963 INFO L225 Difference]: With dead ends: 118 [2022-04-05 05:24:16,963 INFO L226 Difference]: Without dead ends: 116 [2022-04-05 05:24:16,964 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 235 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=352, Invalid=1054, Unknown=0, NotChecked=0, Total=1406 [2022-04-05 05:24:16,964 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 54 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-05 05:24:16,965 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 45 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-05 05:24:16,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-04-05 05:24:16,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 112. [2022-04-05 05:24:16,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 82 states have (on average 1.024390243902439) internal successors, (84), 83 states have internal predecessors, (84), 15 states have call successors, (15), 15 states have call predecessors, (15), 14 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2022-04-05 05:24:16,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 113 transitions. [2022-04-05 05:24:16,973 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 113 transitions. Word has length 102 [2022-04-05 05:24:16,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:24:16,973 INFO L478 AbstractCegarLoop]: Abstraction has 112 states and 113 transitions. [2022-04-05 05:24:16,973 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 18 states have internal predecessors, (51), 13 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-04-05 05:24:16,973 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 113 transitions. [2022-04-05 05:24:16,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-04-05 05:24:16,974 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:24:16,974 INFO L499 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:24:16,990 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-04-05 05:24:17,174 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:24:17,175 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:24:17,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:24:17,175 INFO L85 PathProgramCache]: Analyzing trace with hash -40039719, now seen corresponding path program 23 times [2022-04-05 05:24:17,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:24:17,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49381193] [2022-04-05 05:24:17,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:24:17,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:24:17,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:17,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:24:17,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:17,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-05 05:24:17,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:17,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-05 05:24:17,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:17,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-04-05 05:24:17,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:17,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-04-05 05:24:17,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:17,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-04-05 05:24:17,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:17,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-04-05 05:24:17,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:17,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-04-05 05:24:17,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:17,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-04-05 05:24:17,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:17,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-04-05 05:24:17,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:17,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-04-05 05:24:17,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:17,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-04-05 05:24:17,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:17,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-04-05 05:24:17,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:17,512 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 212 proven. 112 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-04-05 05:24:17,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:24:17,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49381193] [2022-04-05 05:24:17,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49381193] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:24:17,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149581125] [2022-04-05 05:24:17,512 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-05 05:24:17,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:24:17,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:24:17,515 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:24:17,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-04-05 05:24:17,578 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2022-04-05 05:24:17,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:24:17,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 28 conjunts are in the unsatisfiable core [2022-04-05 05:24:17,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:24:18,073 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 246 proven. 78 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-04-05 05:24:18,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:24:18,285 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 246 proven. 78 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-04-05 05:24:18,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149581125] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:24:18,286 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:24:18,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 29, 29] total 45 [2022-04-05 05:24:18,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428214819] [2022-04-05 05:24:18,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:24:18,286 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-04-05 05:24:18,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:24:18,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-04-05 05:24:18,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=441, Invalid=1539, Unknown=0, NotChecked=0, Total=1980 [2022-04-05 05:24:18,288 INFO L87 Difference]: Start difference. First operand 112 states and 113 transitions. Second operand has 45 states, 45 states have (on average 1.7777777777777777) internal successors, (80), 44 states have internal predecessors, (80), 27 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-04-05 05:24:18,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:24:18,907 INFO L93 Difference]: Finished difference Result 160 states and 174 transitions. [2022-04-05 05:24:18,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-04-05 05:24:18,907 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.7777777777777777) internal successors, (80), 44 states have internal predecessors, (80), 27 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Word has length 109 [2022-04-05 05:24:18,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:24:18,908 INFO L225 Difference]: With dead ends: 160 [2022-04-05 05:24:18,908 INFO L226 Difference]: Without dead ends: 113 [2022-04-05 05:24:18,909 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 228 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1365 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=996, Invalid=4116, Unknown=0, NotChecked=0, Total=5112 [2022-04-05 05:24:18,910 INFO L913 BasicCegarLoop]: 24 mSDtfsCounter, 21 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-05 05:24:18,910 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 71 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-05 05:24:18,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-04-05 05:24:18,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2022-04-05 05:24:18,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 83 states have (on average 1.0240963855421688) internal successors, (85), 84 states have internal predecessors, (85), 15 states have call successors, (15), 15 states have call predecessors, (15), 14 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2022-04-05 05:24:18,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 114 transitions. [2022-04-05 05:24:18,921 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 114 transitions. Word has length 109 [2022-04-05 05:24:18,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:24:18,921 INFO L478 AbstractCegarLoop]: Abstraction has 113 states and 114 transitions. [2022-04-05 05:24:18,921 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.7777777777777777) internal successors, (80), 44 states have internal predecessors, (80), 27 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-04-05 05:24:18,921 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 114 transitions. [2022-04-05 05:24:18,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-04-05 05:24:18,922 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:24:18,922 INFO L499 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:24:18,944 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-04-05 05:24:19,135 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-04-05 05:24:19,136 INFO L403 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:24:19,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:24:19,136 INFO L85 PathProgramCache]: Analyzing trace with hash 915802973, now seen corresponding path program 24 times [2022-04-05 05:24:19,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:24:19,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248812182] [2022-04-05 05:24:19,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:24:19,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:24:19,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:19,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:24:19,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:19,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-04-05 05:24:19,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:19,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-04-05 05:24:19,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:19,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-04-05 05:24:19,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:19,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-04-05 05:24:19,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:19,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-04-05 05:24:19,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:19,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-04-05 05:24:19,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:19,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-04-05 05:24:19,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:19,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-04-05 05:24:19,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:19,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-04-05 05:24:19,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:19,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-04-05 05:24:19,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:19,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-04-05 05:24:19,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:19,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-04-05 05:24:19,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:19,346 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 102 proven. 235 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-04-05 05:24:19,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:24:19,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248812182] [2022-04-05 05:24:19,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248812182] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:24:19,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008416082] [2022-04-05 05:24:19,347 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-05 05:24:19,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:24:19,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:24:19,351 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:24:19,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-04-05 05:24:19,418 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2022-04-05 05:24:19,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:24:19,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 29 conjunts are in the unsatisfiable core [2022-04-05 05:24:19,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:24:19,639 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 115 proven. 222 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-04-05 05:24:19,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:24:19,842 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 115 proven. 222 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-04-05 05:24:19,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008416082] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:24:19,842 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:24:19,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 18] total 22 [2022-04-05 05:24:19,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878993888] [2022-04-05 05:24:19,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:24:19,843 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-04-05 05:24:19,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:24:19,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-04-05 05:24:19,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=327, Unknown=0, NotChecked=0, Total=462 [2022-04-05 05:24:19,844 INFO L87 Difference]: Start difference. First operand 113 states and 114 transitions. Second operand has 22 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 19 states have internal predecessors, (54), 14 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-04-05 05:24:20,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:24:20,179 INFO L93 Difference]: Finished difference Result 126 states and 128 transitions. [2022-04-05 05:24:20,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-04-05 05:24:20,180 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 19 states have internal predecessors, (54), 14 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Word has length 110 [2022-04-05 05:24:20,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:24:20,180 INFO L225 Difference]: With dead ends: 126 [2022-04-05 05:24:20,180 INFO L226 Difference]: Without dead ends: 124 [2022-04-05 05:24:20,181 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 254 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=397, Invalid=1163, Unknown=0, NotChecked=0, Total=1560 [2022-04-05 05:24:20,181 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 51 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-05 05:24:20,182 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 40 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-05 05:24:20,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-04-05 05:24:20,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 120. [2022-04-05 05:24:20,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 88 states have (on average 1.0227272727272727) internal successors, (90), 89 states have internal predecessors, (90), 16 states have call successors, (16), 16 states have call predecessors, (16), 15 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2022-04-05 05:24:20,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 121 transitions. [2022-04-05 05:24:20,190 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 121 transitions. Word has length 110 [2022-04-05 05:24:20,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:24:20,191 INFO L478 AbstractCegarLoop]: Abstraction has 120 states and 121 transitions. [2022-04-05 05:24:20,191 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 19 states have internal predecessors, (54), 14 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-04-05 05:24:20,191 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 121 transitions. [2022-04-05 05:24:20,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-04-05 05:24:20,192 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:24:20,192 INFO L499 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:24:20,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-04-05 05:24:20,414 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-04-05 05:24:20,415 INFO L403 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:24:20,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:24:20,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1241894685, now seen corresponding path program 25 times [2022-04-05 05:24:20,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:24:20,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349464771] [2022-04-05 05:24:20,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:24:20,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:24:20,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:20,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:24:20,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:20,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-04-05 05:24:20,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:20,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-04-05 05:24:20,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:20,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-04-05 05:24:20,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:20,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-04-05 05:24:20,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:20,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-04-05 05:24:20,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:20,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-04-05 05:24:20,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:20,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-04-05 05:24:20,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:20,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-04-05 05:24:20,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:20,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-04-05 05:24:20,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:20,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-04-05 05:24:20,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:20,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-04-05 05:24:20,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:20,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-04-05 05:24:20,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:20,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-04-05 05:24:20,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:20,800 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 249 proven. 128 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-04-05 05:24:20,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:24:20,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349464771] [2022-04-05 05:24:20,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349464771] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:24:20,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366478289] [2022-04-05 05:24:20,800 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-05 05:24:20,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:24:20,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:24:20,803 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:24:20,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-04-05 05:24:20,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:20,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 30 conjunts are in the unsatisfiable core [2022-04-05 05:24:20,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:24:21,403 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 286 proven. 91 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-04-05 05:24:21,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:24:21,639 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 286 proven. 91 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-04-05 05:24:21,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [366478289] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:24:21,640 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:24:21,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 31, 31] total 48 [2022-04-05 05:24:21,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266863371] [2022-04-05 05:24:21,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:24:21,640 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-04-05 05:24:21,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:24:21,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-04-05 05:24:21,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=502, Invalid=1754, Unknown=0, NotChecked=0, Total=2256 [2022-04-05 05:24:21,642 INFO L87 Difference]: Start difference. First operand 120 states and 121 transitions. Second operand has 48 states, 48 states have (on average 1.7708333333333333) internal successors, (85), 47 states have internal predecessors, (85), 29 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2022-04-05 05:24:22,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:24:22,197 INFO L93 Difference]: Finished difference Result 171 states and 186 transitions. [2022-04-05 05:24:22,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-04-05 05:24:22,198 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.7708333333333333) internal successors, (85), 47 states have internal predecessors, (85), 29 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Word has length 117 [2022-04-05 05:24:22,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:24:22,199 INFO L225 Difference]: With dead ends: 171 [2022-04-05 05:24:22,199 INFO L226 Difference]: Without dead ends: 121 [2022-04-05 05:24:22,201 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 245 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1569 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1134, Invalid=4718, Unknown=0, NotChecked=0, Total=5852 [2022-04-05 05:24:22,201 INFO L913 BasicCegarLoop]: 25 mSDtfsCounter, 21 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-05 05:24:22,201 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 62 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-05 05:24:22,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-04-05 05:24:22,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2022-04-05 05:24:22,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 89 states have (on average 1.0224719101123596) internal successors, (91), 90 states have internal predecessors, (91), 16 states have call successors, (16), 16 states have call predecessors, (16), 15 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2022-04-05 05:24:22,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 122 transitions. [2022-04-05 05:24:22,211 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 122 transitions. Word has length 117 [2022-04-05 05:24:22,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:24:22,211 INFO L478 AbstractCegarLoop]: Abstraction has 121 states and 122 transitions. [2022-04-05 05:24:22,211 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.7708333333333333) internal successors, (85), 47 states have internal predecessors, (85), 29 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2022-04-05 05:24:22,211 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 122 transitions. [2022-04-05 05:24:22,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-04-05 05:24:22,212 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:24:22,212 INFO L499 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:24:22,235 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2022-04-05 05:24:22,432 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-04-05 05:24:22,432 INFO L403 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:24:22,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:24:22,432 INFO L85 PathProgramCache]: Analyzing trace with hash -314045535, now seen corresponding path program 26 times [2022-04-05 05:24:22,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:24:22,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873548345] [2022-04-05 05:24:22,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:24:22,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:24:22,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:22,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:24:22,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:22,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-04-05 05:24:22,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:22,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-04-05 05:24:22,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:22,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-04-05 05:24:22,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:22,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-04-05 05:24:22,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:22,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-04-05 05:24:22,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:22,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-04-05 05:24:22,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:22,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-04-05 05:24:22,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:22,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-04-05 05:24:22,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:22,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-04-05 05:24:22,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:22,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-04-05 05:24:22,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:22,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-04-05 05:24:22,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:22,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-04-05 05:24:22,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:22,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-04-05 05:24:22,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:22,685 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 117 proven. 274 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-04-05 05:24:22,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:24:22,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873548345] [2022-04-05 05:24:22,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873548345] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:24:22,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687435512] [2022-04-05 05:24:22,685 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 05:24:22,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:24:22,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:24:22,686 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:24:22,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-04-05 05:24:22,752 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 05:24:22,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:24:22,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 31 conjunts are in the unsatisfiable core [2022-04-05 05:24:22,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:24:22,963 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 131 proven. 260 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-04-05 05:24:22,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:24:23,174 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 131 proven. 260 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-04-05 05:24:23,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687435512] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:24:23,174 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:24:23,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 23 [2022-04-05 05:24:23,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710992754] [2022-04-05 05:24:23,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:24:23,175 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-04-05 05:24:23,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:24:23,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-04-05 05:24:23,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=355, Unknown=0, NotChecked=0, Total=506 [2022-04-05 05:24:23,176 INFO L87 Difference]: Start difference. First operand 121 states and 122 transitions. Second operand has 23 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 20 states have internal predecessors, (57), 15 states have call successors, (18), 4 states have call predecessors, (18), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-04-05 05:24:23,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:24:23,493 INFO L93 Difference]: Finished difference Result 134 states and 136 transitions. [2022-04-05 05:24:23,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-04-05 05:24:23,494 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 20 states have internal predecessors, (57), 15 states have call successors, (18), 4 states have call predecessors, (18), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 118 [2022-04-05 05:24:23,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:24:23,495 INFO L225 Difference]: With dead ends: 134 [2022-04-05 05:24:23,495 INFO L226 Difference]: Without dead ends: 132 [2022-04-05 05:24:23,495 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 273 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=445, Invalid=1277, Unknown=0, NotChecked=0, Total=1722 [2022-04-05 05:24:23,496 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 61 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-05 05:24:23,496 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 50 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-05 05:24:23,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-04-05 05:24:23,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 128. [2022-04-05 05:24:23,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 94 states have (on average 1.0212765957446808) internal successors, (96), 95 states have internal predecessors, (96), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2022-04-05 05:24:23,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 129 transitions. [2022-04-05 05:24:23,505 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 129 transitions. Word has length 118 [2022-04-05 05:24:23,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:24:23,506 INFO L478 AbstractCegarLoop]: Abstraction has 128 states and 129 transitions. [2022-04-05 05:24:23,506 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 20 states have internal predecessors, (57), 15 states have call successors, (18), 4 states have call predecessors, (18), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-04-05 05:24:23,506 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 129 transitions. [2022-04-05 05:24:23,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-04-05 05:24:23,507 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:24:23,507 INFO L499 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:24:23,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-04-05 05:24:23,723 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-04-05 05:24:23,723 INFO L403 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:24:23,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:24:23,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1629242791, now seen corresponding path program 27 times [2022-04-05 05:24:23,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:24:23,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601321894] [2022-04-05 05:24:23,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:24:23,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:24:23,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:24,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:24:24,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:24,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-04-05 05:24:24,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:24,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-04-05 05:24:24,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:24,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-04-05 05:24:24,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:24,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-04-05 05:24:24,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:24,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-04-05 05:24:24,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:24,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-04-05 05:24:24,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:24,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-04-05 05:24:24,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:24,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-04-05 05:24:24,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:24,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-04-05 05:24:24,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:24,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-04-05 05:24:24,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:24,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-04-05 05:24:24,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:24,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-04-05 05:24:24,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:24,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-04-05 05:24:24,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:24,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-04-05 05:24:24,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:24,107 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 289 proven. 145 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-04-05 05:24:24,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:24:24,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601321894] [2022-04-05 05:24:24,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601321894] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:24:24,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706932328] [2022-04-05 05:24:24,108 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-05 05:24:24,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:24:24,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:24:24,112 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:24:24,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-04-05 05:24:24,188 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2022-04-05 05:24:24,189 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:24:24,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 32 conjunts are in the unsatisfiable core [2022-04-05 05:24:24,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:24:24,784 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 329 proven. 105 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-04-05 05:24:24,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:24:25,009 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 329 proven. 105 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-04-05 05:24:25,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706932328] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:24:25,010 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:24:25,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 33, 33] total 51 [2022-04-05 05:24:25,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238359842] [2022-04-05 05:24:25,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:24:25,011 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-04-05 05:24:25,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:24:25,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-04-05 05:24:25,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=567, Invalid=1983, Unknown=0, NotChecked=0, Total=2550 [2022-04-05 05:24:25,012 INFO L87 Difference]: Start difference. First operand 128 states and 129 transitions. Second operand has 51 states, 51 states have (on average 1.7647058823529411) internal successors, (90), 50 states have internal predecessors, (90), 31 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2022-04-05 05:24:25,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:24:25,733 INFO L93 Difference]: Finished difference Result 182 states and 198 transitions. [2022-04-05 05:24:25,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-04-05 05:24:25,733 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.7647058823529411) internal successors, (90), 50 states have internal predecessors, (90), 31 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Word has length 125 [2022-04-05 05:24:25,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:24:25,734 INFO L225 Difference]: With dead ends: 182 [2022-04-05 05:24:25,734 INFO L226 Difference]: Without dead ends: 129 [2022-04-05 05:24:25,735 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 262 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1787 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1281, Invalid=5361, Unknown=0, NotChecked=0, Total=6642 [2022-04-05 05:24:25,736 INFO L913 BasicCegarLoop]: 26 mSDtfsCounter, 21 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-05 05:24:25,736 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 93 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-05 05:24:25,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-04-05 05:24:25,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2022-04-05 05:24:25,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 95 states have (on average 1.0210526315789474) internal successors, (97), 96 states have internal predecessors, (97), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2022-04-05 05:24:25,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 130 transitions. [2022-04-05 05:24:25,745 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 130 transitions. Word has length 125 [2022-04-05 05:24:25,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:24:25,745 INFO L478 AbstractCegarLoop]: Abstraction has 129 states and 130 transitions. [2022-04-05 05:24:25,745 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.7647058823529411) internal successors, (90), 50 states have internal predecessors, (90), 31 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2022-04-05 05:24:25,745 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 130 transitions. [2022-04-05 05:24:25,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-04-05 05:24:25,746 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:24:25,746 INFO L499 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:24:25,765 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-04-05 05:24:25,954 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:24:25,954 INFO L403 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:24:25,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:24:25,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1567830749, now seen corresponding path program 28 times [2022-04-05 05:24:25,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:24:25,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906824161] [2022-04-05 05:24:25,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:24:25,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:24:25,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:26,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:24:26,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:26,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-04-05 05:24:26,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:26,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-04-05 05:24:26,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:26,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-04-05 05:24:26,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:26,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-04-05 05:24:26,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:26,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-04-05 05:24:26,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:26,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-04-05 05:24:26,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:26,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-04-05 05:24:26,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:26,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-04-05 05:24:26,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:26,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-04-05 05:24:26,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:26,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-04-05 05:24:26,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:26,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-04-05 05:24:26,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:26,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-04-05 05:24:26,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:26,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-04-05 05:24:26,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:26,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-04-05 05:24:26,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:26,199 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 133 proven. 316 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-04-05 05:24:26,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:24:26,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906824161] [2022-04-05 05:24:26,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906824161] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:24:26,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224385691] [2022-04-05 05:24:26,199 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-05 05:24:26,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:24:26,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:24:26,201 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:24:26,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-04-05 05:24:26,268 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-05 05:24:26,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:24:26,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 33 conjunts are in the unsatisfiable core [2022-04-05 05:24:26,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:24:26,478 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 148 proven. 301 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-04-05 05:24:26,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:24:26,681 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 148 proven. 301 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-04-05 05:24:26,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224385691] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:24:26,681 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:24:26,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 24 [2022-04-05 05:24:26,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847327818] [2022-04-05 05:24:26,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:24:26,682 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-04-05 05:24:26,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:24:26,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-04-05 05:24:26,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=384, Unknown=0, NotChecked=0, Total=552 [2022-04-05 05:24:26,683 INFO L87 Difference]: Start difference. First operand 129 states and 130 transitions. Second operand has 24 states, 24 states have (on average 2.5) internal successors, (60), 21 states have internal predecessors, (60), 16 states have call successors, (19), 4 states have call predecessors, (19), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-04-05 05:24:27,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:24:27,029 INFO L93 Difference]: Finished difference Result 142 states and 144 transitions. [2022-04-05 05:24:27,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-04-05 05:24:27,029 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.5) internal successors, (60), 21 states have internal predecessors, (60), 16 states have call successors, (19), 4 states have call predecessors, (19), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Word has length 126 [2022-04-05 05:24:27,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:24:27,030 INFO L225 Difference]: With dead ends: 142 [2022-04-05 05:24:27,031 INFO L226 Difference]: Without dead ends: 140 [2022-04-05 05:24:27,031 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 292 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=496, Invalid=1396, Unknown=0, NotChecked=0, Total=1892 [2022-04-05 05:24:27,032 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 60 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-05 05:24:27,032 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 45 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-05 05:24:27,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-04-05 05:24:27,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 136. [2022-04-05 05:24:27,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 100 states have (on average 1.02) internal successors, (102), 101 states have internal predecessors, (102), 18 states have call successors, (18), 18 states have call predecessors, (18), 17 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2022-04-05 05:24:27,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 137 transitions. [2022-04-05 05:24:27,045 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 137 transitions. Word has length 126 [2022-04-05 05:24:27,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:24:27,046 INFO L478 AbstractCegarLoop]: Abstraction has 136 states and 137 transitions. [2022-04-05 05:24:27,046 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.5) internal successors, (60), 21 states have internal predecessors, (60), 16 states have call successors, (19), 4 states have call predecessors, (19), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-04-05 05:24:27,046 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 137 transitions. [2022-04-05 05:24:27,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-04-05 05:24:27,047 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:24:27,047 INFO L499 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:24:27,069 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-04-05 05:24:27,263 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:24:27,263 INFO L403 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:24:27,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:24:27,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1593128861, now seen corresponding path program 29 times [2022-04-05 05:24:27,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:24:27,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999148494] [2022-04-05 05:24:27,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:24:27,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:24:27,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:27,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:24:27,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:27,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-04-05 05:24:27,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:27,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-04-05 05:24:27,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:27,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-04-05 05:24:27,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:27,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-04-05 05:24:27,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:27,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-04-05 05:24:27,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:27,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-04-05 05:24:27,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:27,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-04-05 05:24:27,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:27,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-04-05 05:24:27,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:27,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-04-05 05:24:27,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:27,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-04-05 05:24:27,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:27,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-04-05 05:24:27,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:27,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-04-05 05:24:27,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:27,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-04-05 05:24:27,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:27,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-04-05 05:24:27,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:27,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-04-05 05:24:27,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:27,664 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 332 proven. 163 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2022-04-05 05:24:27,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:24:27,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999148494] [2022-04-05 05:24:27,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999148494] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:24:27,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267141459] [2022-04-05 05:24:27,665 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-05 05:24:27,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:24:27,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:24:27,667 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:24:27,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-04-05 05:24:27,745 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2022-04-05 05:24:27,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:24:27,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 34 conjunts are in the unsatisfiable core [2022-04-05 05:24:27,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:24:28,365 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 375 proven. 120 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2022-04-05 05:24:28,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:24:28,585 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 375 proven. 120 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2022-04-05 05:24:28,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267141459] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:24:28,585 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:24:28,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 35, 35] total 54 [2022-04-05 05:24:28,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440270351] [2022-04-05 05:24:28,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:24:28,586 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-04-05 05:24:28,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:24:28,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-04-05 05:24:28,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=636, Invalid=2226, Unknown=0, NotChecked=0, Total=2862 [2022-04-05 05:24:28,587 INFO L87 Difference]: Start difference. First operand 136 states and 137 transitions. Second operand has 54 states, 54 states have (on average 1.7592592592592593) internal successors, (95), 53 states have internal predecessors, (95), 33 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2022-04-05 05:24:29,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:24:29,292 INFO L93 Difference]: Finished difference Result 193 states and 210 transitions. [2022-04-05 05:24:29,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-04-05 05:24:29,292 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.7592592592592593) internal successors, (95), 53 states have internal predecessors, (95), 33 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Word has length 133 [2022-04-05 05:24:29,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:24:29,293 INFO L225 Difference]: With dead ends: 193 [2022-04-05 05:24:29,293 INFO L226 Difference]: Without dead ends: 137 [2022-04-05 05:24:29,295 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 279 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2019 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1437, Invalid=6045, Unknown=0, NotChecked=0, Total=7482 [2022-04-05 05:24:29,295 INFO L913 BasicCegarLoop]: 27 mSDtfsCounter, 21 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-05 05:24:29,295 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 49 Invalid, 718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-05 05:24:29,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-04-05 05:24:29,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2022-04-05 05:24:29,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 101 states have (on average 1.0198019801980198) internal successors, (103), 102 states have internal predecessors, (103), 18 states have call successors, (18), 18 states have call predecessors, (18), 17 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2022-04-05 05:24:29,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 138 transitions. [2022-04-05 05:24:29,306 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 138 transitions. Word has length 133 [2022-04-05 05:24:29,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:24:29,306 INFO L478 AbstractCegarLoop]: Abstraction has 137 states and 138 transitions. [2022-04-05 05:24:29,307 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.7592592592592593) internal successors, (95), 53 states have internal predecessors, (95), 33 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2022-04-05 05:24:29,307 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 138 transitions. [2022-04-05 05:24:29,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-04-05 05:24:29,307 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:24:29,308 INFO L499 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:24:29,334 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-04-05 05:24:29,534 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-04-05 05:24:29,534 INFO L403 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:24:29,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:24:29,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1512707039, now seen corresponding path program 30 times [2022-04-05 05:24:29,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:24:29,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864538929] [2022-04-05 05:24:29,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:24:29,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:24:29,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:29,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:24:29,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:29,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-05 05:24:29,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:29,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-05 05:24:29,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:29,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-04-05 05:24:29,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:29,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-04-05 05:24:29,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:29,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-04-05 05:24:29,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:29,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-04-05 05:24:29,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:29,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-04-05 05:24:29,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:29,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-04-05 05:24:29,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:29,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-04-05 05:24:29,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:29,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-04-05 05:24:29,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:29,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-04-05 05:24:29,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:29,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-04-05 05:24:29,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:29,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-04-05 05:24:29,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:29,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-04-05 05:24:29,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:29,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-04-05 05:24:29,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:29,781 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 150 proven. 361 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2022-04-05 05:24:29,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:24:29,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864538929] [2022-04-05 05:24:29,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864538929] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:24:29,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766762964] [2022-04-05 05:24:29,781 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-05 05:24:29,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:24:29,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:24:29,783 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:24:29,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-04-05 05:24:29,854 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2022-04-05 05:24:29,854 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:24:29,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 35 conjunts are in the unsatisfiable core [2022-04-05 05:24:29,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:24:30,057 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 166 proven. 345 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2022-04-05 05:24:30,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:24:30,303 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 166 proven. 345 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2022-04-05 05:24:30,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766762964] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:24:30,304 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:24:30,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 21] total 25 [2022-04-05 05:24:30,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682638249] [2022-04-05 05:24:30,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:24:30,304 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-04-05 05:24:30,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:24:30,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-04-05 05:24:30,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=414, Unknown=0, NotChecked=0, Total=600 [2022-04-05 05:24:30,305 INFO L87 Difference]: Start difference. First operand 137 states and 138 transitions. Second operand has 25 states, 25 states have (on average 2.52) internal successors, (63), 22 states have internal predecessors, (63), 17 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-04-05 05:24:30,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:24:30,656 INFO L93 Difference]: Finished difference Result 150 states and 152 transitions. [2022-04-05 05:24:30,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-04-05 05:24:30,657 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.52) internal successors, (63), 22 states have internal predecessors, (63), 17 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Word has length 134 [2022-04-05 05:24:30,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:24:30,658 INFO L225 Difference]: With dead ends: 150 [2022-04-05 05:24:30,658 INFO L226 Difference]: Without dead ends: 148 [2022-04-05 05:24:30,658 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 311 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=550, Invalid=1520, Unknown=0, NotChecked=0, Total=2070 [2022-04-05 05:24:30,659 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 61 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-05 05:24:30,659 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 45 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-05 05:24:30,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2022-04-05 05:24:30,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 144. [2022-04-05 05:24:30,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 106 states have (on average 1.0188679245283019) internal successors, (108), 107 states have internal predecessors, (108), 19 states have call successors, (19), 19 states have call predecessors, (19), 18 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2022-04-05 05:24:30,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 145 transitions. [2022-04-05 05:24:30,671 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 145 transitions. Word has length 134 [2022-04-05 05:24:30,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:24:30,671 INFO L478 AbstractCegarLoop]: Abstraction has 144 states and 145 transitions. [2022-04-05 05:24:30,671 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.52) internal successors, (63), 22 states have internal predecessors, (63), 17 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-04-05 05:24:30,671 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 145 transitions. [2022-04-05 05:24:30,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-04-05 05:24:30,673 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:24:30,673 INFO L499 BasicCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:24:30,698 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-04-05 05:24:30,897 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:24:30,897 INFO L403 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:24:30,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:24:30,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1785706023, now seen corresponding path program 31 times [2022-04-05 05:24:30,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:24:30,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287115433] [2022-04-05 05:24:30,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:24:30,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:24:30,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:31,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:24:31,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:31,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-05 05:24:31,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:31,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-05 05:24:31,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:31,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-04-05 05:24:31,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:31,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-04-05 05:24:31,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:31,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-04-05 05:24:31,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:31,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-04-05 05:24:31,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:31,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-04-05 05:24:31,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:31,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-04-05 05:24:31,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:31,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-04-05 05:24:31,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:31,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-04-05 05:24:31,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:31,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-04-05 05:24:31,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:31,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-04-05 05:24:31,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:31,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-04-05 05:24:31,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:31,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-04-05 05:24:31,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:31,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-04-05 05:24:31,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:31,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-04-05 05:24:31,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:31,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 378 proven. 182 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2022-04-05 05:24:31,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:24:31,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287115433] [2022-04-05 05:24:31,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287115433] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:24:31,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974455584] [2022-04-05 05:24:31,342 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-05 05:24:31,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:24:31,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:24:31,344 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:24:31,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-04-05 05:24:31,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:31,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 36 conjunts are in the unsatisfiable core [2022-04-05 05:24:31,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:24:32,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 424 proven. 136 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2022-04-05 05:24:32,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:24:32,323 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 424 proven. 136 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2022-04-05 05:24:32,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974455584] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:24:32,323 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:24:32,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 37, 37] total 57 [2022-04-05 05:24:32,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191812559] [2022-04-05 05:24:32,324 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:24:32,324 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-04-05 05:24:32,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:24:32,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-04-05 05:24:32,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=709, Invalid=2483, Unknown=0, NotChecked=0, Total=3192 [2022-04-05 05:24:32,325 INFO L87 Difference]: Start difference. First operand 144 states and 145 transitions. Second operand has 57 states, 57 states have (on average 1.7543859649122806) internal successors, (100), 56 states have internal predecessors, (100), 35 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-04-05 05:24:33,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:24:33,092 INFO L93 Difference]: Finished difference Result 204 states and 222 transitions. [2022-04-05 05:24:33,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-04-05 05:24:33,093 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 1.7543859649122806) internal successors, (100), 56 states have internal predecessors, (100), 35 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Word has length 141 [2022-04-05 05:24:33,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:24:33,094 INFO L225 Difference]: With dead ends: 204 [2022-04-05 05:24:33,094 INFO L226 Difference]: Without dead ends: 145 [2022-04-05 05:24:33,095 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 296 SyntacticMatches, 1 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2265 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1602, Invalid=6770, Unknown=0, NotChecked=0, Total=8372 [2022-04-05 05:24:33,095 INFO L913 BasicCegarLoop]: 28 mSDtfsCounter, 21 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 757 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-05 05:24:33,096 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 85 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 757 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-05 05:24:33,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-04-05 05:24:33,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2022-04-05 05:24:33,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 107 states have (on average 1.0186915887850467) internal successors, (109), 108 states have internal predecessors, (109), 19 states have call successors, (19), 19 states have call predecessors, (19), 18 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2022-04-05 05:24:33,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 146 transitions. [2022-04-05 05:24:33,107 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 146 transitions. Word has length 141 [2022-04-05 05:24:33,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:24:33,107 INFO L478 AbstractCegarLoop]: Abstraction has 145 states and 146 transitions. [2022-04-05 05:24:33,107 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 1.7543859649122806) internal successors, (100), 56 states have internal predecessors, (100), 35 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-04-05 05:24:33,107 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 146 transitions. [2022-04-05 05:24:33,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-04-05 05:24:33,108 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:24:33,108 INFO L499 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:24:33,131 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-04-05 05:24:33,329 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:24:33,330 INFO L403 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:24:33,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:24:33,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1916388771, now seen corresponding path program 32 times [2022-04-05 05:24:33,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:24:33,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850203653] [2022-04-05 05:24:33,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:24:33,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:24:33,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:33,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:24:33,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:33,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-04-05 05:24:33,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:33,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-04-05 05:24:33,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:33,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-04-05 05:24:33,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:33,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-04-05 05:24:33,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:33,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-04-05 05:24:33,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:33,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-04-05 05:24:33,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:33,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-04-05 05:24:33,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:33,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-04-05 05:24:33,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:33,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-04-05 05:24:33,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:33,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-04-05 05:24:33,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:33,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-04-05 05:24:33,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:33,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-04-05 05:24:33,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:33,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-04-05 05:24:33,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:33,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-04-05 05:24:33,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:33,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-04-05 05:24:33,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:33,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-04-05 05:24:33,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:33,598 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 168 proven. 409 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2022-04-05 05:24:33,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:24:33,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850203653] [2022-04-05 05:24:33,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850203653] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:24:33,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145973623] [2022-04-05 05:24:33,599 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 05:24:33,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:24:33,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:24:33,600 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:24:33,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-04-05 05:24:33,669 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 05:24:33,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:24:33,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 37 conjunts are in the unsatisfiable core [2022-04-05 05:24:33,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:24:33,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 185 proven. 392 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2022-04-05 05:24:33,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:24:34,100 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 185 proven. 392 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2022-04-05 05:24:34,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145973623] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:24:34,101 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:24:34,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22, 22] total 26 [2022-04-05 05:24:34,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536315554] [2022-04-05 05:24:34,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:24:34,101 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-04-05 05:24:34,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:24:34,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-04-05 05:24:34,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=445, Unknown=0, NotChecked=0, Total=650 [2022-04-05 05:24:34,102 INFO L87 Difference]: Start difference. First operand 145 states and 146 transitions. Second operand has 26 states, 26 states have (on average 2.5384615384615383) internal successors, (66), 23 states have internal predecessors, (66), 18 states have call successors, (21), 4 states have call predecessors, (21), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-04-05 05:24:34,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:24:34,532 INFO L93 Difference]: Finished difference Result 158 states and 160 transitions. [2022-04-05 05:24:34,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-04-05 05:24:34,533 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.5384615384615383) internal successors, (66), 23 states have internal predecessors, (66), 18 states have call successors, (21), 4 states have call predecessors, (21), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Word has length 142 [2022-04-05 05:24:34,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:24:34,534 INFO L225 Difference]: With dead ends: 158 [2022-04-05 05:24:34,534 INFO L226 Difference]: Without dead ends: 156 [2022-04-05 05:24:34,534 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 330 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 501 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=607, Invalid=1649, Unknown=0, NotChecked=0, Total=2256 [2022-04-05 05:24:34,535 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 61 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-05 05:24:34,535 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 65 Invalid, 535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-05 05:24:34,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-04-05 05:24:34,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 152. [2022-04-05 05:24:34,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 112 states have (on average 1.0178571428571428) internal successors, (114), 113 states have internal predecessors, (114), 20 states have call successors, (20), 20 states have call predecessors, (20), 19 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2022-04-05 05:24:34,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 153 transitions. [2022-04-05 05:24:34,548 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 153 transitions. Word has length 142 [2022-04-05 05:24:34,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:24:34,548 INFO L478 AbstractCegarLoop]: Abstraction has 152 states and 153 transitions. [2022-04-05 05:24:34,548 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.5384615384615383) internal successors, (66), 23 states have internal predecessors, (66), 18 states have call successors, (21), 4 states have call predecessors, (21), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-04-05 05:24:34,549 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 153 transitions. [2022-04-05 05:24:34,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-04-05 05:24:34,549 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:24:34,549 INFO L499 BasicCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:24:34,569 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2022-04-05 05:24:34,759 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-04-05 05:24:34,759 INFO L403 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:24:34,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:24:34,760 INFO L85 PathProgramCache]: Analyzing trace with hash -736968675, now seen corresponding path program 33 times [2022-04-05 05:24:34,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:24:34,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820684174] [2022-04-05 05:24:34,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:24:34,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:24:34,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:35,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:24:35,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:35,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-04-05 05:24:35,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:35,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-04-05 05:24:35,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:35,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-04-05 05:24:35,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:35,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-04-05 05:24:35,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:35,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-04-05 05:24:35,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:35,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-04-05 05:24:35,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:35,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-04-05 05:24:35,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:35,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-04-05 05:24:35,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:35,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-04-05 05:24:35,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:35,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-04-05 05:24:35,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:35,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-04-05 05:24:35,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:35,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-04-05 05:24:35,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:35,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-04-05 05:24:35,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:35,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-04-05 05:24:35,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:35,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-04-05 05:24:35,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:35,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-04-05 05:24:35,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:35,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-04-05 05:24:35,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:35,260 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 427 proven. 202 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2022-04-05 05:24:35,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:24:35,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820684174] [2022-04-05 05:24:35,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820684174] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:24:35,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659068346] [2022-04-05 05:24:35,260 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-05 05:24:35,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:24:35,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:24:35,264 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:24:35,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-04-05 05:24:35,345 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2022-04-05 05:24:35,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:24:35,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 38 conjunts are in the unsatisfiable core [2022-04-05 05:24:35,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:24:36,074 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 476 proven. 153 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2022-04-05 05:24:36,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:24:36,348 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 476 proven. 153 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2022-04-05 05:24:36,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659068346] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:24:36,348 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:24:36,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 39, 39] total 60 [2022-04-05 05:24:36,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312279101] [2022-04-05 05:24:36,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:24:36,349 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-04-05 05:24:36,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:24:36,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-04-05 05:24:36,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=786, Invalid=2754, Unknown=0, NotChecked=0, Total=3540 [2022-04-05 05:24:36,350 INFO L87 Difference]: Start difference. First operand 152 states and 153 transitions. Second operand has 60 states, 60 states have (on average 1.75) internal successors, (105), 59 states have internal predecessors, (105), 37 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2022-04-05 05:24:37,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:24:37,224 INFO L93 Difference]: Finished difference Result 215 states and 234 transitions. [2022-04-05 05:24:37,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-04-05 05:24:37,224 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 1.75) internal successors, (105), 59 states have internal predecessors, (105), 37 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Word has length 149 [2022-04-05 05:24:37,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:24:37,225 INFO L225 Difference]: With dead ends: 215 [2022-04-05 05:24:37,226 INFO L226 Difference]: Without dead ends: 153 [2022-04-05 05:24:37,227 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 313 SyntacticMatches, 1 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2525 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1776, Invalid=7536, Unknown=0, NotChecked=0, Total=9312 [2022-04-05 05:24:37,228 INFO L913 BasicCegarLoop]: 29 mSDtfsCounter, 21 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-05 05:24:37,228 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 71 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-05 05:24:37,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-04-05 05:24:37,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2022-04-05 05:24:37,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 113 states have (on average 1.0176991150442478) internal successors, (115), 114 states have internal predecessors, (115), 20 states have call successors, (20), 20 states have call predecessors, (20), 19 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2022-04-05 05:24:37,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 154 transitions. [2022-04-05 05:24:37,243 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 154 transitions. Word has length 149 [2022-04-05 05:24:37,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:24:37,243 INFO L478 AbstractCegarLoop]: Abstraction has 153 states and 154 transitions. [2022-04-05 05:24:37,243 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 1.75) internal successors, (105), 59 states have internal predecessors, (105), 37 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2022-04-05 05:24:37,243 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 154 transitions. [2022-04-05 05:24:37,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-04-05 05:24:37,244 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:24:37,244 INFO L499 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:24:37,269 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-04-05 05:24:37,467 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-04-05 05:24:37,467 INFO L403 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:24:37,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:24:37,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1654779041, now seen corresponding path program 34 times [2022-04-05 05:24:37,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:24:37,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168634104] [2022-04-05 05:24:37,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:24:37,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:24:37,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:37,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:24:37,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:37,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-05 05:24:37,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:37,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-04-05 05:24:37,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:37,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-04-05 05:24:37,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:37,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-04-05 05:24:37,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:37,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-04-05 05:24:37,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:37,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-04-05 05:24:37,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:37,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-04-05 05:24:37,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:37,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-04-05 05:24:37,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:37,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-04-05 05:24:37,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:37,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-04-05 05:24:37,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:37,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-04-05 05:24:37,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:37,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-04-05 05:24:37,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:37,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-04-05 05:24:37,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:37,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-04-05 05:24:37,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:37,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-04-05 05:24:37,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:37,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-04-05 05:24:37,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:37,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-04-05 05:24:37,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:37,776 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 187 proven. 460 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2022-04-05 05:24:37,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:24:37,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168634104] [2022-04-05 05:24:37,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168634104] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:24:37,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646722197] [2022-04-05 05:24:37,777 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-05 05:24:37,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:24:37,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:24:37,778 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:24:37,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-04-05 05:24:37,841 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-05 05:24:37,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:24:37,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 39 conjunts are in the unsatisfiable core [2022-04-05 05:24:37,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:24:38,093 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 205 proven. 442 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2022-04-05 05:24:38,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:24:38,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 205 proven. 442 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2022-04-05 05:24:38,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646722197] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:24:38,317 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:24:38,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 23] total 27 [2022-04-05 05:24:38,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255846636] [2022-04-05 05:24:38,318 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:24:38,318 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-04-05 05:24:38,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:24:38,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-04-05 05:24:38,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=477, Unknown=0, NotChecked=0, Total=702 [2022-04-05 05:24:38,319 INFO L87 Difference]: Start difference. First operand 153 states and 154 transitions. Second operand has 27 states, 27 states have (on average 2.5555555555555554) internal successors, (69), 24 states have internal predecessors, (69), 19 states have call successors, (22), 4 states have call predecessors, (22), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-04-05 05:24:38,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:24:38,839 INFO L93 Difference]: Finished difference Result 166 states and 168 transitions. [2022-04-05 05:24:38,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-04-05 05:24:38,840 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.5555555555555554) internal successors, (69), 24 states have internal predecessors, (69), 19 states have call successors, (22), 4 states have call predecessors, (22), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Word has length 150 [2022-04-05 05:24:38,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:24:38,841 INFO L225 Difference]: With dead ends: 166 [2022-04-05 05:24:38,841 INFO L226 Difference]: Without dead ends: 164 [2022-04-05 05:24:38,842 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 349 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 539 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=667, Invalid=1783, Unknown=0, NotChecked=0, Total=2450 [2022-04-05 05:24:38,842 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 67 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-05 05:24:38,842 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 45 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-05 05:24:38,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-04-05 05:24:38,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 160. [2022-04-05 05:24:38,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 118 states have (on average 1.0169491525423728) internal successors, (120), 119 states have internal predecessors, (120), 21 states have call successors, (21), 21 states have call predecessors, (21), 20 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2022-04-05 05:24:38,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 161 transitions. [2022-04-05 05:24:38,855 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 161 transitions. Word has length 150 [2022-04-05 05:24:38,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:24:38,856 INFO L478 AbstractCegarLoop]: Abstraction has 160 states and 161 transitions. [2022-04-05 05:24:38,856 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.5555555555555554) internal successors, (69), 24 states have internal predecessors, (69), 19 states have call successors, (22), 4 states have call predecessors, (22), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-04-05 05:24:38,856 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 161 transitions. [2022-04-05 05:24:38,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-04-05 05:24:38,857 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:24:38,857 INFO L499 BasicCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:24:38,879 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2022-04-05 05:24:39,057 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-04-05 05:24:39,058 INFO L403 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:24:39,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:24:39,058 INFO L85 PathProgramCache]: Analyzing trace with hash 198883673, now seen corresponding path program 35 times [2022-04-05 05:24:39,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:24:39,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125115176] [2022-04-05 05:24:39,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:24:39,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:24:39,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:39,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:24:39,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:39,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-05 05:24:39,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:39,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-04-05 05:24:39,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:39,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-04-05 05:24:39,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:39,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-04-05 05:24:39,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:39,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-04-05 05:24:39,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:39,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-04-05 05:24:39,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:39,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-04-05 05:24:39,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:39,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-04-05 05:24:39,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:39,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-04-05 05:24:39,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:39,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-04-05 05:24:39,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:39,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-04-05 05:24:39,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:39,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-04-05 05:24:39,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:39,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-04-05 05:24:39,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:39,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-04-05 05:24:39,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:39,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-04-05 05:24:39,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:39,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-04-05 05:24:39,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:39,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-04-05 05:24:39,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:39,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-04-05 05:24:39,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:39,638 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 479 proven. 223 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2022-04-05 05:24:39,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:24:39,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125115176] [2022-04-05 05:24:39,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125115176] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:24:39,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316209721] [2022-04-05 05:24:39,639 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-05 05:24:39,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:24:39,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:24:39,640 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:24:39,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-04-05 05:24:39,729 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2022-04-05 05:24:39,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:24:39,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 40 conjunts are in the unsatisfiable core [2022-04-05 05:24:39,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:24:40,535 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 531 proven. 171 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2022-04-05 05:24:40,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:24:40,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 531 proven. 171 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2022-04-05 05:24:40,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316209721] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:24:40,782 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:24:40,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 41, 41] total 63 [2022-04-05 05:24:40,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443256144] [2022-04-05 05:24:40,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:24:40,783 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-04-05 05:24:40,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:24:40,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-04-05 05:24:40,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=867, Invalid=3039, Unknown=0, NotChecked=0, Total=3906 [2022-04-05 05:24:40,784 INFO L87 Difference]: Start difference. First operand 160 states and 161 transitions. Second operand has 63 states, 63 states have (on average 1.746031746031746) internal successors, (110), 62 states have internal predecessors, (110), 39 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2022-04-05 05:24:41,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:24:41,718 INFO L93 Difference]: Finished difference Result 226 states and 246 transitions. [2022-04-05 05:24:41,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-04-05 05:24:41,718 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 1.746031746031746) internal successors, (110), 62 states have internal predecessors, (110), 39 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Word has length 157 [2022-04-05 05:24:41,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:24:41,719 INFO L225 Difference]: With dead ends: 226 [2022-04-05 05:24:41,719 INFO L226 Difference]: Without dead ends: 161 [2022-04-05 05:24:41,720 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 330 SyntacticMatches, 1 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2799 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1959, Invalid=8343, Unknown=0, NotChecked=0, Total=10302 [2022-04-05 05:24:41,721 INFO L913 BasicCegarLoop]: 30 mSDtfsCounter, 21 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 966 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 1050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 966 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-05 05:24:41,721 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 102 Invalid, 1050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 966 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-05 05:24:41,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2022-04-05 05:24:41,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2022-04-05 05:24:41,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 119 states have (on average 1.0168067226890756) internal successors, (121), 120 states have internal predecessors, (121), 21 states have call successors, (21), 21 states have call predecessors, (21), 20 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2022-04-05 05:24:41,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 162 transitions. [2022-04-05 05:24:41,734 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 162 transitions. Word has length 157 [2022-04-05 05:24:41,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:24:41,734 INFO L478 AbstractCegarLoop]: Abstraction has 161 states and 162 transitions. [2022-04-05 05:24:41,735 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 1.746031746031746) internal successors, (110), 62 states have internal predecessors, (110), 39 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2022-04-05 05:24:41,735 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 162 transitions. [2022-04-05 05:24:41,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-04-05 05:24:41,736 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:24:41,736 INFO L499 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:24:41,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-04-05 05:24:41,951 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:24:41,951 INFO L403 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:24:41,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:24:41,952 INFO L85 PathProgramCache]: Analyzing trace with hash -775478819, now seen corresponding path program 36 times [2022-04-05 05:24:41,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:24:41,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140018095] [2022-04-05 05:24:41,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:24:41,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:24:41,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:42,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:24:42,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:42,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-05 05:24:42,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:42,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-04-05 05:24:42,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:42,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-04-05 05:24:42,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:42,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-04-05 05:24:42,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:42,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-04-05 05:24:42,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:42,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-04-05 05:24:42,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:42,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-04-05 05:24:42,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:42,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-04-05 05:24:42,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:42,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-04-05 05:24:42,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:42,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-04-05 05:24:42,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:42,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-04-05 05:24:42,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:42,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-04-05 05:24:42,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:42,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-04-05 05:24:42,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:42,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-04-05 05:24:42,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:42,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-04-05 05:24:42,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:42,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-04-05 05:24:42,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:42,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-04-05 05:24:42,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:42,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-04-05 05:24:42,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:42,254 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 207 proven. 514 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2022-04-05 05:24:42,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:24:42,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140018095] [2022-04-05 05:24:42,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140018095] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:24:42,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182699227] [2022-04-05 05:24:42,255 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-05 05:24:42,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:24:42,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:24:42,256 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:24:42,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-04-05 05:24:42,343 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2022-04-05 05:24:42,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:24:42,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 41 conjunts are in the unsatisfiable core [2022-04-05 05:24:42,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:24:42,598 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 226 proven. 495 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2022-04-05 05:24:42,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:24:42,840 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 226 proven. 495 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2022-04-05 05:24:42,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182699227] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:24:42,840 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:24:42,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 24] total 28 [2022-04-05 05:24:42,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899008734] [2022-04-05 05:24:42,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:24:42,841 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-04-05 05:24:42,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:24:42,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-04-05 05:24:42,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=510, Unknown=0, NotChecked=0, Total=756 [2022-04-05 05:24:42,841 INFO L87 Difference]: Start difference. First operand 161 states and 162 transitions. Second operand has 28 states, 28 states have (on average 2.5714285714285716) internal successors, (72), 25 states have internal predecessors, (72), 20 states have call successors, (23), 4 states have call predecessors, (23), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-04-05 05:24:43,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:24:43,271 INFO L93 Difference]: Finished difference Result 174 states and 176 transitions. [2022-04-05 05:24:43,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-04-05 05:24:43,271 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.5714285714285716) internal successors, (72), 25 states have internal predecessors, (72), 20 states have call successors, (23), 4 states have call predecessors, (23), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Word has length 158 [2022-04-05 05:24:43,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:24:43,272 INFO L225 Difference]: With dead ends: 174 [2022-04-05 05:24:43,273 INFO L226 Difference]: Without dead ends: 172 [2022-04-05 05:24:43,273 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 368 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 578 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=730, Invalid=1922, Unknown=0, NotChecked=0, Total=2652 [2022-04-05 05:24:43,275 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 75 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-05 05:24:43,276 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 45 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-05 05:24:43,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2022-04-05 05:24:43,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 168. [2022-04-05 05:24:43,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 124 states have (on average 1.0161290322580645) internal successors, (126), 125 states have internal predecessors, (126), 22 states have call successors, (22), 22 states have call predecessors, (22), 21 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2022-04-05 05:24:43,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 169 transitions. [2022-04-05 05:24:43,288 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 169 transitions. Word has length 158 [2022-04-05 05:24:43,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:24:43,290 INFO L478 AbstractCegarLoop]: Abstraction has 168 states and 169 transitions. [2022-04-05 05:24:43,290 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.5714285714285716) internal successors, (72), 25 states have internal predecessors, (72), 20 states have call successors, (23), 4 states have call predecessors, (23), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-04-05 05:24:43,290 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 169 transitions. [2022-04-05 05:24:43,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-04-05 05:24:43,291 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:24:43,291 INFO L499 BasicCegarLoop]: trace histogram [20, 20, 20, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:24:43,316 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-04-05 05:24:43,508 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-04-05 05:24:43,508 INFO L403 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:24:43,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:24:43,509 INFO L85 PathProgramCache]: Analyzing trace with hash 807823517, now seen corresponding path program 37 times [2022-04-05 05:24:43,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:24:43,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758997105] [2022-04-05 05:24:43,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:24:43,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:24:43,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:44,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:24:44,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:44,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-05 05:24:44,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:44,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-04-05 05:24:44,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:44,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-04-05 05:24:44,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:44,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-04-05 05:24:44,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:44,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-04-05 05:24:44,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:44,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-04-05 05:24:44,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:44,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-04-05 05:24:44,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:44,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-04-05 05:24:44,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:44,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-04-05 05:24:44,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:44,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-04-05 05:24:44,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:44,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-04-05 05:24:44,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:44,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-04-05 05:24:44,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:44,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-04-05 05:24:44,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:44,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-04-05 05:24:44,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:44,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-04-05 05:24:44,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:44,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-04-05 05:24:44,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:44,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-04-05 05:24:44,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:44,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-04-05 05:24:44,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:44,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-04-05 05:24:44,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:44,081 INFO L134 CoverageAnalysis]: Checked inductivity of 1463 backedges. 534 proven. 245 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2022-04-05 05:24:44,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:24:44,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758997105] [2022-04-05 05:24:44,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758997105] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:24:44,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042940301] [2022-04-05 05:24:44,081 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-05 05:24:44,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:24:44,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:24:44,088 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:24:44,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-04-05 05:24:44,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:44,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 42 conjunts are in the unsatisfiable core [2022-04-05 05:24:44,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:24:45,010 INFO L134 CoverageAnalysis]: Checked inductivity of 1463 backedges. 589 proven. 190 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2022-04-05 05:24:45,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:24:45,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1463 backedges. 589 proven. 190 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2022-04-05 05:24:45,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042940301] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:24:45,351 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:24:45,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 43, 43] total 66 [2022-04-05 05:24:45,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127318114] [2022-04-05 05:24:45,352 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:24:45,352 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-04-05 05:24:45,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:24:45,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-04-05 05:24:45,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=952, Invalid=3338, Unknown=0, NotChecked=0, Total=4290 [2022-04-05 05:24:45,354 INFO L87 Difference]: Start difference. First operand 168 states and 169 transitions. Second operand has 66 states, 66 states have (on average 1.7424242424242424) internal successors, (115), 65 states have internal predecessors, (115), 41 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-04-05 05:24:46,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:24:46,348 INFO L93 Difference]: Finished difference Result 237 states and 258 transitions. [2022-04-05 05:24:46,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-04-05 05:24:46,348 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.7424242424242424) internal successors, (115), 65 states have internal predecessors, (115), 41 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Word has length 165 [2022-04-05 05:24:46,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:24:46,349 INFO L225 Difference]: With dead ends: 237 [2022-04-05 05:24:46,349 INFO L226 Difference]: Without dead ends: 169 [2022-04-05 05:24:46,350 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 347 SyntacticMatches, 1 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3087 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2151, Invalid=9191, Unknown=0, NotChecked=0, Total=11342 [2022-04-05 05:24:46,350 INFO L913 BasicCegarLoop]: 31 mSDtfsCounter, 21 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 959 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 1049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-05 05:24:46,350 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 98 Invalid, 1049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 959 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-05 05:24:46,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-04-05 05:24:46,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2022-04-05 05:24:46,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 125 states have (on average 1.016) internal successors, (127), 126 states have internal predecessors, (127), 22 states have call successors, (22), 22 states have call predecessors, (22), 21 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2022-04-05 05:24:46,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 170 transitions. [2022-04-05 05:24:46,365 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 170 transitions. Word has length 165 [2022-04-05 05:24:46,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:24:46,365 INFO L478 AbstractCegarLoop]: Abstraction has 169 states and 170 transitions. [2022-04-05 05:24:46,365 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 1.7424242424242424) internal successors, (115), 65 states have internal predecessors, (115), 41 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-04-05 05:24:46,366 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 170 transitions. [2022-04-05 05:24:46,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-04-05 05:24:46,366 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:24:46,366 INFO L499 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:24:46,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-04-05 05:24:46,583 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-04-05 05:24:46,584 INFO L403 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:24:46,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:24:46,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1972105951, now seen corresponding path program 38 times [2022-04-05 05:24:46,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:24:46,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100791619] [2022-04-05 05:24:46,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:24:46,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:24:46,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:46,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:24:46,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:46,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-04-05 05:24:46,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:46,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-04-05 05:24:46,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:46,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-04-05 05:24:46,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:46,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-04-05 05:24:46,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:46,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-04-05 05:24:46,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:46,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-04-05 05:24:46,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:46,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-04-05 05:24:46,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:46,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-04-05 05:24:46,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:46,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-04-05 05:24:46,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:46,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-04-05 05:24:46,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:46,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-04-05 05:24:46,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:46,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-04-05 05:24:46,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:46,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-04-05 05:24:46,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:46,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-04-05 05:24:46,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:46,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-04-05 05:24:46,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:46,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-04-05 05:24:46,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:46,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-04-05 05:24:46,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:46,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-04-05 05:24:46,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:46,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-04-05 05:24:46,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:46,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 228 proven. 571 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2022-04-05 05:24:46,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:24:46,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100791619] [2022-04-05 05:24:46,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100791619] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:24:46,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106570386] [2022-04-05 05:24:46,885 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 05:24:46,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:24:46,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:24:46,888 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:24:46,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-04-05 05:24:46,983 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 05:24:46,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:24:46,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 43 conjunts are in the unsatisfiable core [2022-04-05 05:24:46,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:24:47,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 248 proven. 551 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2022-04-05 05:24:47,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:24:47,470 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 248 proven. 551 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2022-04-05 05:24:47,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106570386] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:24:47,470 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:24:47,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 25] total 29 [2022-04-05 05:24:47,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267741276] [2022-04-05 05:24:47,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:24:47,471 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-04-05 05:24:47,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:24:47,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-04-05 05:24:47,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=544, Unknown=0, NotChecked=0, Total=812 [2022-04-05 05:24:47,471 INFO L87 Difference]: Start difference. First operand 169 states and 170 transitions. Second operand has 29 states, 29 states have (on average 2.586206896551724) internal successors, (75), 26 states have internal predecessors, (75), 21 states have call successors, (24), 4 states have call predecessors, (24), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-04-05 05:24:47,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:24:47,902 INFO L93 Difference]: Finished difference Result 182 states and 184 transitions. [2022-04-05 05:24:47,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-04-05 05:24:47,902 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.586206896551724) internal successors, (75), 26 states have internal predecessors, (75), 21 states have call successors, (24), 4 states have call predecessors, (24), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 166 [2022-04-05 05:24:47,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:24:47,904 INFO L225 Difference]: With dead ends: 182 [2022-04-05 05:24:47,904 INFO L226 Difference]: Without dead ends: 180 [2022-04-05 05:24:47,904 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 387 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 618 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=796, Invalid=2066, Unknown=0, NotChecked=0, Total=2862 [2022-04-05 05:24:47,904 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 67 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-05 05:24:47,905 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 60 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-05 05:24:47,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2022-04-05 05:24:47,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 176. [2022-04-05 05:24:47,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 130 states have (on average 1.0153846153846153) internal successors, (132), 131 states have internal predecessors, (132), 23 states have call successors, (23), 23 states have call predecessors, (23), 22 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2022-04-05 05:24:47,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 177 transitions. [2022-04-05 05:24:47,919 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 177 transitions. Word has length 166 [2022-04-05 05:24:47,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:24:47,920 INFO L478 AbstractCegarLoop]: Abstraction has 176 states and 177 transitions. [2022-04-05 05:24:47,920 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.586206896551724) internal successors, (75), 26 states have internal predecessors, (75), 21 states have call successors, (24), 4 states have call predecessors, (24), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-04-05 05:24:47,920 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 177 transitions. [2022-04-05 05:24:47,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-04-05 05:24:47,921 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:24:47,921 INFO L499 BasicCegarLoop]: trace histogram [21, 21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:24:47,944 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2022-04-05 05:24:48,135 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:24:48,135 INFO L403 AbstractCegarLoop]: === Iteration 42 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:24:48,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:24:48,136 INFO L85 PathProgramCache]: Analyzing trace with hash -369424167, now seen corresponding path program 39 times [2022-04-05 05:24:48,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:24:48,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785068072] [2022-04-05 05:24:48,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:24:48,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:24:48,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:48,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:24:48,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:48,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-04-05 05:24:48,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:48,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-04-05 05:24:48,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:48,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-04-05 05:24:48,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:48,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-04-05 05:24:48,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:48,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-04-05 05:24:48,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:48,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-04-05 05:24:48,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:48,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-04-05 05:24:48,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:48,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-04-05 05:24:48,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:48,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-04-05 05:24:48,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:48,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-04-05 05:24:48,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:48,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-04-05 05:24:48,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:48,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-04-05 05:24:48,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:48,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-04-05 05:24:48,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:48,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-04-05 05:24:48,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:48,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-04-05 05:24:48,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:48,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-04-05 05:24:48,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:48,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-04-05 05:24:48,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:48,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-04-05 05:24:48,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:48,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-04-05 05:24:48,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:48,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-04-05 05:24:48,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:48,821 INFO L134 CoverageAnalysis]: Checked inductivity of 1620 backedges. 592 proven. 268 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-04-05 05:24:48,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:24:48,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785068072] [2022-04-05 05:24:48,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785068072] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:24:48,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996116085] [2022-04-05 05:24:48,822 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-05 05:24:48,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:24:48,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:24:48,823 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:24:48,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-04-05 05:24:48,920 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2022-04-05 05:24:48,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:24:48,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 44 conjunts are in the unsatisfiable core [2022-04-05 05:24:48,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:24:49,840 INFO L134 CoverageAnalysis]: Checked inductivity of 1620 backedges. 650 proven. 210 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-04-05 05:24:49,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:24:50,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1620 backedges. 650 proven. 210 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-04-05 05:24:50,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996116085] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:24:50,135 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:24:50,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 45, 45] total 69 [2022-04-05 05:24:50,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335280355] [2022-04-05 05:24:50,135 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:24:50,136 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-04-05 05:24:50,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:24:50,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-04-05 05:24:50,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1041, Invalid=3651, Unknown=0, NotChecked=0, Total=4692 [2022-04-05 05:24:50,137 INFO L87 Difference]: Start difference. First operand 176 states and 177 transitions. Second operand has 69 states, 69 states have (on average 1.7391304347826086) internal successors, (120), 68 states have internal predecessors, (120), 43 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-04-05 05:24:51,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:24:51,185 INFO L93 Difference]: Finished difference Result 248 states and 270 transitions. [2022-04-05 05:24:51,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-04-05 05:24:51,185 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 1.7391304347826086) internal successors, (120), 68 states have internal predecessors, (120), 43 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Word has length 173 [2022-04-05 05:24:51,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:24:51,186 INFO L225 Difference]: With dead ends: 248 [2022-04-05 05:24:51,186 INFO L226 Difference]: Without dead ends: 177 [2022-04-05 05:24:51,187 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 364 SyntacticMatches, 1 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3389 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2352, Invalid=10080, Unknown=0, NotChecked=0, Total=12432 [2022-04-05 05:24:51,187 INFO L913 BasicCegarLoop]: 32 mSDtfsCounter, 21 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1090 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 1185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-05 05:24:51,188 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 94 Invalid, 1185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1090 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-05 05:24:51,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-04-05 05:24:51,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2022-04-05 05:24:51,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 131 states have (on average 1.015267175572519) internal successors, (133), 132 states have internal predecessors, (133), 23 states have call successors, (23), 23 states have call predecessors, (23), 22 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2022-04-05 05:24:51,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 178 transitions. [2022-04-05 05:24:51,202 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 178 transitions. Word has length 173 [2022-04-05 05:24:51,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:24:51,202 INFO L478 AbstractCegarLoop]: Abstraction has 177 states and 178 transitions. [2022-04-05 05:24:51,202 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 1.7391304347826086) internal successors, (120), 68 states have internal predecessors, (120), 43 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-04-05 05:24:51,203 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 178 transitions. [2022-04-05 05:24:51,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-04-05 05:24:51,204 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:24:51,204 INFO L499 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:24:51,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-04-05 05:24:51,430 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2022-04-05 05:24:51,430 INFO L403 AbstractCegarLoop]: === Iteration 43 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:24:51,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:24:51,431 INFO L85 PathProgramCache]: Analyzing trace with hash -240260771, now seen corresponding path program 40 times [2022-04-05 05:24:51,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:24:51,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955541512] [2022-04-05 05:24:51,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:24:51,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:24:51,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:51,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:24:51,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:51,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-04-05 05:24:51,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:51,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-04-05 05:24:51,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:51,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-04-05 05:24:51,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:51,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-04-05 05:24:51,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:51,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-04-05 05:24:51,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:51,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-04-05 05:24:51,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:51,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-04-05 05:24:51,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:51,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-04-05 05:24:51,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:51,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-04-05 05:24:51,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:51,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-04-05 05:24:51,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:51,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-04-05 05:24:51,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:51,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-04-05 05:24:51,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:51,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-04-05 05:24:51,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:51,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-04-05 05:24:51,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:51,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-04-05 05:24:51,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:51,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-04-05 05:24:51,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:51,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-04-05 05:24:51,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:51,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-04-05 05:24:51,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:51,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-04-05 05:24:51,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:51,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-04-05 05:24:51,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:51,786 INFO L134 CoverageAnalysis]: Checked inductivity of 1641 backedges. 250 proven. 631 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-04-05 05:24:51,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:24:51,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955541512] [2022-04-05 05:24:51,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955541512] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:24:51,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087713921] [2022-04-05 05:24:51,787 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-05 05:24:51,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:24:51,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:24:51,788 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:24:51,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-04-05 05:24:51,869 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-05 05:24:51,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:24:51,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 45 conjunts are in the unsatisfiable core [2022-04-05 05:24:51,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:24:52,167 INFO L134 CoverageAnalysis]: Checked inductivity of 1641 backedges. 271 proven. 610 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-04-05 05:24:52,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:24:52,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1641 backedges. 271 proven. 610 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-04-05 05:24:52,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087713921] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:24:52,429 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:24:52,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26, 26] total 30 [2022-04-05 05:24:52,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189449540] [2022-04-05 05:24:52,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:24:52,430 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-04-05 05:24:52,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:24:52,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-04-05 05:24:52,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=291, Invalid=579, Unknown=0, NotChecked=0, Total=870 [2022-04-05 05:24:52,431 INFO L87 Difference]: Start difference. First operand 177 states and 178 transitions. Second operand has 30 states, 30 states have (on average 2.6) internal successors, (78), 27 states have internal predecessors, (78), 22 states have call successors, (25), 4 states have call predecessors, (25), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-04-05 05:24:52,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:24:52,913 INFO L93 Difference]: Finished difference Result 190 states and 192 transitions. [2022-04-05 05:24:52,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-04-05 05:24:52,913 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.6) internal successors, (78), 27 states have internal predecessors, (78), 22 states have call successors, (25), 4 states have call predecessors, (25), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Word has length 174 [2022-04-05 05:24:52,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:24:52,916 INFO L225 Difference]: With dead ends: 190 [2022-04-05 05:24:52,916 INFO L226 Difference]: Without dead ends: 188 [2022-04-05 05:24:52,917 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 406 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 659 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=865, Invalid=2215, Unknown=0, NotChecked=0, Total=3080 [2022-04-05 05:24:52,923 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 67 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-05 05:24:52,923 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 45 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-05 05:24:52,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-04-05 05:24:52,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 184. [2022-04-05 05:24:52,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 136 states have (on average 1.0147058823529411) internal successors, (138), 137 states have internal predecessors, (138), 24 states have call successors, (24), 24 states have call predecessors, (24), 23 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2022-04-05 05:24:52,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 185 transitions. [2022-04-05 05:24:52,940 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 185 transitions. Word has length 174 [2022-04-05 05:24:52,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:24:52,941 INFO L478 AbstractCegarLoop]: Abstraction has 184 states and 185 transitions. [2022-04-05 05:24:52,942 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.6) internal successors, (78), 27 states have internal predecessors, (78), 22 states have call successors, (25), 4 states have call predecessors, (25), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-04-05 05:24:52,942 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 185 transitions. [2022-04-05 05:24:52,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-04-05 05:24:52,943 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:24:52,943 INFO L499 BasicCegarLoop]: trace histogram [22, 22, 22, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:24:52,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-04-05 05:24:53,166 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:24:53,167 INFO L403 AbstractCegarLoop]: === Iteration 44 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:24:53,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:24:53,167 INFO L85 PathProgramCache]: Analyzing trace with hash 2079863069, now seen corresponding path program 41 times [2022-04-05 05:24:53,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:24:53,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800935970] [2022-04-05 05:24:53,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:24:53,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:24:53,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:53,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:24:53,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:53,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-04-05 05:24:53,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:53,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-04-05 05:24:53,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:53,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-04-05 05:24:53,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:53,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-04-05 05:24:53,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:53,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-04-05 05:24:53,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:53,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-04-05 05:24:53,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:53,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-04-05 05:24:53,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:53,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-04-05 05:24:53,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:53,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-04-05 05:24:53,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:53,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-04-05 05:24:53,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:53,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-04-05 05:24:53,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:53,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-04-05 05:24:53,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:53,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-04-05 05:24:53,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:53,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-04-05 05:24:53,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:53,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-04-05 05:24:53,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:53,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-04-05 05:24:53,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:53,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-04-05 05:24:53,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:53,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-04-05 05:24:53,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:53,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-04-05 05:24:53,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:53,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-04-05 05:24:53,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:53,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-04-05 05:24:53,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:53,840 INFO L134 CoverageAnalysis]: Checked inductivity of 1785 backedges. 653 proven. 292 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2022-04-05 05:24:53,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:24:53,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800935970] [2022-04-05 05:24:53,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800935970] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:24:53,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911834567] [2022-04-05 05:24:53,841 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-05 05:24:53,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:24:53,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:24:53,844 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:24:53,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-04-05 05:24:53,928 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2022-04-05 05:24:53,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:24:53,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 46 conjunts are in the unsatisfiable core [2022-04-05 05:24:53,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:24:54,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1785 backedges. 714 proven. 231 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2022-04-05 05:24:54,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:24:55,182 INFO L134 CoverageAnalysis]: Checked inductivity of 1785 backedges. 714 proven. 231 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2022-04-05 05:24:55,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911834567] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:24:55,183 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:24:55,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 47, 47] total 72 [2022-04-05 05:24:55,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809131212] [2022-04-05 05:24:55,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:24:55,183 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-04-05 05:24:55,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:24:55,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-04-05 05:24:55,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1134, Invalid=3978, Unknown=0, NotChecked=0, Total=5112 [2022-04-05 05:24:55,185 INFO L87 Difference]: Start difference. First operand 184 states and 185 transitions. Second operand has 72 states, 72 states have (on average 1.7361111111111112) internal successors, (125), 71 states have internal predecessors, (125), 45 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-04-05 05:24:56,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:24:56,268 INFO L93 Difference]: Finished difference Result 259 states and 282 transitions. [2022-04-05 05:24:56,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-04-05 05:24:56,268 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 1.7361111111111112) internal successors, (125), 71 states have internal predecessors, (125), 45 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Word has length 181 [2022-04-05 05:24:56,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:24:56,269 INFO L225 Difference]: With dead ends: 259 [2022-04-05 05:24:56,269 INFO L226 Difference]: Without dead ends: 185 [2022-04-05 05:24:56,270 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 381 SyntacticMatches, 1 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3705 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2562, Invalid=11010, Unknown=0, NotChecked=0, Total=13572 [2022-04-05 05:24:56,271 INFO L913 BasicCegarLoop]: 33 mSDtfsCounter, 21 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1038 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 1139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-05 05:24:56,271 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 90 Invalid, 1139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1038 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-05 05:24:56,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2022-04-05 05:24:56,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2022-04-05 05:24:56,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 137 states have (on average 1.0145985401459854) internal successors, (139), 138 states have internal predecessors, (139), 24 states have call successors, (24), 24 states have call predecessors, (24), 23 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2022-04-05 05:24:56,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 186 transitions. [2022-04-05 05:24:56,288 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 186 transitions. Word has length 181 [2022-04-05 05:24:56,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:24:56,288 INFO L478 AbstractCegarLoop]: Abstraction has 185 states and 186 transitions. [2022-04-05 05:24:56,288 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 1.7361111111111112) internal successors, (125), 71 states have internal predecessors, (125), 45 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-04-05 05:24:56,288 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 186 transitions. [2022-04-05 05:24:56,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-04-05 05:24:56,289 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:24:56,289 INFO L499 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:24:56,313 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-04-05 05:24:56,503 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:24:56,503 INFO L403 AbstractCegarLoop]: === Iteration 45 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:24:56,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:24:56,504 INFO L85 PathProgramCache]: Analyzing trace with hash 101993889, now seen corresponding path program 42 times [2022-04-05 05:24:56,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:24:56,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707863778] [2022-04-05 05:24:56,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:24:56,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:24:56,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:56,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:24:56,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:56,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-04-05 05:24:56,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:56,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-04-05 05:24:56,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:56,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-04-05 05:24:56,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:56,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-04-05 05:24:56,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:56,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-04-05 05:24:56,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:56,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-04-05 05:24:56,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:56,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-04-05 05:24:56,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:56,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-04-05 05:24:56,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:56,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-04-05 05:24:56,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:56,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-04-05 05:24:56,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:56,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-04-05 05:24:56,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:56,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-04-05 05:24:56,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:56,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-04-05 05:24:56,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:56,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-04-05 05:24:56,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:56,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-04-05 05:24:56,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:56,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-04-05 05:24:56,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:56,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-04-05 05:24:56,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:56,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-04-05 05:24:56,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:56,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-04-05 05:24:56,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:56,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-04-05 05:24:56,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:56,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-04-05 05:24:56,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:56,835 INFO L134 CoverageAnalysis]: Checked inductivity of 1807 backedges. 273 proven. 694 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2022-04-05 05:24:56,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:24:56,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707863778] [2022-04-05 05:24:56,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707863778] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:24:56,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181520975] [2022-04-05 05:24:56,836 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-05 05:24:56,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:24:56,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:24:56,840 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:24:56,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-04-05 05:24:56,943 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2022-04-05 05:24:56,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:24:56,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 47 conjunts are in the unsatisfiable core [2022-04-05 05:24:56,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:24:57,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1807 backedges. 295 proven. 672 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2022-04-05 05:24:57,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:24:57,532 INFO L134 CoverageAnalysis]: Checked inductivity of 1807 backedges. 295 proven. 672 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2022-04-05 05:24:57,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181520975] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:24:57,533 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:24:57,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27, 27] total 31 [2022-04-05 05:24:57,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423383082] [2022-04-05 05:24:57,533 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:24:57,534 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-04-05 05:24:57,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:24:57,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-04-05 05:24:57,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=315, Invalid=615, Unknown=0, NotChecked=0, Total=930 [2022-04-05 05:24:57,534 INFO L87 Difference]: Start difference. First operand 185 states and 186 transitions. Second operand has 31 states, 31 states have (on average 2.6129032258064515) internal successors, (81), 28 states have internal predecessors, (81), 23 states have call successors, (26), 4 states have call predecessors, (26), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-04-05 05:24:57,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:24:57,996 INFO L93 Difference]: Finished difference Result 198 states and 200 transitions. [2022-04-05 05:24:57,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-04-05 05:24:57,997 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.6129032258064515) internal successors, (81), 28 states have internal predecessors, (81), 23 states have call successors, (26), 4 states have call predecessors, (26), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Word has length 182 [2022-04-05 05:24:57,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:24:57,998 INFO L225 Difference]: With dead ends: 198 [2022-04-05 05:24:57,998 INFO L226 Difference]: Without dead ends: 196 [2022-04-05 05:24:57,999 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 425 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 701 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=937, Invalid=2369, Unknown=0, NotChecked=0, Total=3306 [2022-04-05 05:24:57,999 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 76 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-05 05:24:57,999 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 45 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-05 05:24:57,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-04-05 05:24:58,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 192. [2022-04-05 05:24:58,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 142 states have (on average 1.0140845070422535) internal successors, (144), 143 states have internal predecessors, (144), 25 states have call successors, (25), 25 states have call predecessors, (25), 24 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2022-04-05 05:24:58,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 193 transitions. [2022-04-05 05:24:58,013 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 193 transitions. Word has length 182 [2022-04-05 05:24:58,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:24:58,013 INFO L478 AbstractCegarLoop]: Abstraction has 192 states and 193 transitions. [2022-04-05 05:24:58,013 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.6129032258064515) internal successors, (81), 28 states have internal predecessors, (81), 23 states have call successors, (26), 4 states have call predecessors, (26), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-04-05 05:24:58,013 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 193 transitions. [2022-04-05 05:24:58,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-04-05 05:24:58,014 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:24:58,014 INFO L499 BasicCegarLoop]: trace histogram [23, 23, 23, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:24:58,030 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2022-04-05 05:24:58,214 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2022-04-05 05:24:58,215 INFO L403 AbstractCegarLoop]: === Iteration 46 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:24:58,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:24:58,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1445541977, now seen corresponding path program 43 times [2022-04-05 05:24:58,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:24:58,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557248971] [2022-04-05 05:24:58,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:24:58,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:24:58,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:58,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:24:58,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:58,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-04-05 05:24:58,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:58,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-04-05 05:24:58,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:58,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-04-05 05:24:58,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:58,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-04-05 05:24:58,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:58,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-04-05 05:24:58,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:58,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-04-05 05:24:58,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:58,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-04-05 05:24:58,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:58,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-04-05 05:24:58,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:58,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-04-05 05:24:58,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:58,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-04-05 05:24:58,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:58,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-04-05 05:24:58,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:58,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-04-05 05:24:58,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:58,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-04-05 05:24:58,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:58,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-04-05 05:24:58,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:58,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-04-05 05:24:58,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:58,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-04-05 05:24:58,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:58,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-04-05 05:24:58,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:58,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-04-05 05:24:58,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:58,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-04-05 05:24:58,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:58,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-04-05 05:24:58,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:58,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-04-05 05:24:58,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:58,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-04-05 05:24:58,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:58,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1958 backedges. 717 proven. 317 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2022-04-05 05:24:58,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:24:58,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557248971] [2022-04-05 05:24:58,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557248971] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:24:58,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392907158] [2022-04-05 05:24:58,894 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-05 05:24:58,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:24:58,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:24:58,895 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:24:58,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-04-05 05:24:58,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:58,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 48 conjunts are in the unsatisfiable core [2022-04-05 05:24:58,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:24:59,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1958 backedges. 781 proven. 253 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2022-04-05 05:24:59,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:25:00,295 INFO L134 CoverageAnalysis]: Checked inductivity of 1958 backedges. 781 proven. 253 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2022-04-05 05:25:00,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392907158] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:25:00,295 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:25:00,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 49, 49] total 75 [2022-04-05 05:25:00,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103294566] [2022-04-05 05:25:00,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:25:00,296 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2022-04-05 05:25:00,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:25:00,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2022-04-05 05:25:00,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1231, Invalid=4319, Unknown=0, NotChecked=0, Total=5550 [2022-04-05 05:25:00,297 INFO L87 Difference]: Start difference. First operand 192 states and 193 transitions. Second operand has 75 states, 75 states have (on average 1.7333333333333334) internal successors, (130), 74 states have internal predecessors, (130), 47 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2022-04-05 05:25:01,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:25:01,431 INFO L93 Difference]: Finished difference Result 270 states and 294 transitions. [2022-04-05 05:25:01,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-04-05 05:25:01,432 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 1.7333333333333334) internal successors, (130), 74 states have internal predecessors, (130), 47 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Word has length 189 [2022-04-05 05:25:01,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:25:01,433 INFO L225 Difference]: With dead ends: 270 [2022-04-05 05:25:01,433 INFO L226 Difference]: Without dead ends: 193 [2022-04-05 05:25:01,434 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 398 SyntacticMatches, 1 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4035 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2781, Invalid=11981, Unknown=0, NotChecked=0, Total=14762 [2022-04-05 05:25:01,435 INFO L913 BasicCegarLoop]: 34 mSDtfsCounter, 21 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1051 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 1154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-05 05:25:01,435 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 86 Invalid, 1154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1051 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-05 05:25:01,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2022-04-05 05:25:01,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2022-04-05 05:25:01,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 143 states have (on average 1.013986013986014) internal successors, (145), 144 states have internal predecessors, (145), 25 states have call successors, (25), 25 states have call predecessors, (25), 24 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2022-04-05 05:25:01,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 194 transitions. [2022-04-05 05:25:01,452 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 194 transitions. Word has length 189 [2022-04-05 05:25:01,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:25:01,452 INFO L478 AbstractCegarLoop]: Abstraction has 193 states and 194 transitions. [2022-04-05 05:25:01,452 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 1.7333333333333334) internal successors, (130), 74 states have internal predecessors, (130), 47 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2022-04-05 05:25:01,452 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 194 transitions. [2022-04-05 05:25:01,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-04-05 05:25:01,453 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:25:01,453 INFO L499 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:25:01,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-04-05 05:25:01,670 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2022-04-05 05:25:01,670 INFO L403 AbstractCegarLoop]: === Iteration 47 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:25:01,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:25:01,670 INFO L85 PathProgramCache]: Analyzing trace with hash -206401315, now seen corresponding path program 44 times [2022-04-05 05:25:01,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:25:01,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975095544] [2022-04-05 05:25:01,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:25:01,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:25:01,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:01,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:25:01,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:01,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-05 05:25:01,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:01,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-04-05 05:25:01,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:01,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-04-05 05:25:01,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:01,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-04-05 05:25:01,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:01,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-04-05 05:25:01,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:01,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-04-05 05:25:01,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:01,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-04-05 05:25:01,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:01,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-04-05 05:25:01,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:01,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-04-05 05:25:01,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:01,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-04-05 05:25:01,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:01,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-04-05 05:25:01,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:02,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-04-05 05:25:02,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:02,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-04-05 05:25:02,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:02,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-04-05 05:25:02,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:02,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-04-05 05:25:02,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:02,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-04-05 05:25:02,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:02,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-04-05 05:25:02,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:02,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-04-05 05:25:02,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:02,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-04-05 05:25:02,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:02,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-04-05 05:25:02,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:02,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-04-05 05:25:02,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:02,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-04-05 05:25:02,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:02,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 297 proven. 760 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2022-04-05 05:25:02,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:25:02,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975095544] [2022-04-05 05:25:02,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975095544] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:25:02,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376266643] [2022-04-05 05:25:02,017 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 05:25:02,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:25:02,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:25:02,022 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:25:02,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-04-05 05:25:02,090 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 05:25:02,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:25:02,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 49 conjunts are in the unsatisfiable core [2022-04-05 05:25:02,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:25:02,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 320 proven. 737 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2022-04-05 05:25:02,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:25:02,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 320 proven. 737 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2022-04-05 05:25:02,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376266643] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:25:02,726 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:25:02,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28, 28] total 32 [2022-04-05 05:25:02,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763192935] [2022-04-05 05:25:02,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:25:02,726 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-04-05 05:25:02,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:25:02,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-04-05 05:25:02,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=340, Invalid=652, Unknown=0, NotChecked=0, Total=992 [2022-04-05 05:25:02,727 INFO L87 Difference]: Start difference. First operand 193 states and 194 transitions. Second operand has 32 states, 32 states have (on average 2.625) internal successors, (84), 29 states have internal predecessors, (84), 24 states have call successors, (27), 4 states have call predecessors, (27), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-04-05 05:25:03,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:25:03,227 INFO L93 Difference]: Finished difference Result 206 states and 208 transitions. [2022-04-05 05:25:03,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-04-05 05:25:03,228 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.625) internal successors, (84), 29 states have internal predecessors, (84), 24 states have call successors, (27), 4 states have call predecessors, (27), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Word has length 190 [2022-04-05 05:25:03,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:25:03,228 INFO L225 Difference]: With dead ends: 206 [2022-04-05 05:25:03,229 INFO L226 Difference]: Without dead ends: 204 [2022-04-05 05:25:03,229 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 444 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 744 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1012, Invalid=2528, Unknown=0, NotChecked=0, Total=3540 [2022-04-05 05:25:03,229 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 75 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-05 05:25:03,230 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 45 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 510 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-05 05:25:03,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2022-04-05 05:25:03,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 200. [2022-04-05 05:25:03,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 148 states have (on average 1.0135135135135136) internal successors, (150), 149 states have internal predecessors, (150), 26 states have call successors, (26), 26 states have call predecessors, (26), 25 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2022-04-05 05:25:03,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 201 transitions. [2022-04-05 05:25:03,251 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 201 transitions. Word has length 190 [2022-04-05 05:25:03,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:25:03,251 INFO L478 AbstractCegarLoop]: Abstraction has 200 states and 201 transitions. [2022-04-05 05:25:03,251 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.625) internal successors, (84), 29 states have internal predecessors, (84), 24 states have call successors, (27), 4 states have call predecessors, (27), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-04-05 05:25:03,251 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 201 transitions. [2022-04-05 05:25:03,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-04-05 05:25:03,252 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:25:03,252 INFO L499 BasicCegarLoop]: trace histogram [24, 24, 24, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:25:03,268 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2022-04-05 05:25:03,452 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2022-04-05 05:25:03,453 INFO L403 AbstractCegarLoop]: === Iteration 48 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:25:03,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:25:03,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1034937955, now seen corresponding path program 45 times [2022-04-05 05:25:03,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:25:03,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315207037] [2022-04-05 05:25:03,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:25:03,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:25:03,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:04,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:25:04,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:04,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-05 05:25:04,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:04,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-04-05 05:25:04,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:04,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-04-05 05:25:04,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:04,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-04-05 05:25:04,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:04,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-04-05 05:25:04,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:04,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-04-05 05:25:04,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:04,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-04-05 05:25:04,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:04,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-04-05 05:25:04,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:04,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-04-05 05:25:04,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:04,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-04-05 05:25:04,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:04,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-04-05 05:25:04,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:04,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-04-05 05:25:04,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:04,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-04-05 05:25:04,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:04,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-04-05 05:25:04,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:04,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-04-05 05:25:04,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:04,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-04-05 05:25:04,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:04,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-04-05 05:25:04,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:04,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-04-05 05:25:04,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:04,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-04-05 05:25:04,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:04,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-04-05 05:25:04,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:04,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-04-05 05:25:04,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:04,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-04-05 05:25:04,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:04,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-04-05 05:25:04,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:04,167 INFO L134 CoverageAnalysis]: Checked inductivity of 2139 backedges. 784 proven. 343 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2022-04-05 05:25:04,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:25:04,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315207037] [2022-04-05 05:25:04,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315207037] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:25:04,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149880902] [2022-04-05 05:25:04,167 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-05 05:25:04,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:25:04,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:25:04,168 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:25:04,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-04-05 05:25:04,254 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2022-04-05 05:25:04,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:25:04,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 50 conjunts are in the unsatisfiable core [2022-04-05 05:25:04,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:25:05,393 INFO L134 CoverageAnalysis]: Checked inductivity of 2139 backedges. 851 proven. 276 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2022-04-05 05:25:05,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:25:05,710 INFO L134 CoverageAnalysis]: Checked inductivity of 2139 backedges. 851 proven. 276 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2022-04-05 05:25:05,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149880902] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:25:05,710 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:25:05,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 51, 51] total 78 [2022-04-05 05:25:05,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626034588] [2022-04-05 05:25:05,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:25:05,711 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2022-04-05 05:25:05,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:25:05,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2022-04-05 05:25:05,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1332, Invalid=4674, Unknown=0, NotChecked=0, Total=6006 [2022-04-05 05:25:05,712 INFO L87 Difference]: Start difference. First operand 200 states and 201 transitions. Second operand has 78 states, 78 states have (on average 1.7307692307692308) internal successors, (135), 77 states have internal predecessors, (135), 49 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-04-05 05:25:06,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:25:06,838 INFO L93 Difference]: Finished difference Result 281 states and 306 transitions. [2022-04-05 05:25:06,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-04-05 05:25:06,838 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 1.7307692307692308) internal successors, (135), 77 states have internal predecessors, (135), 49 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Word has length 197 [2022-04-05 05:25:06,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:25:06,839 INFO L225 Difference]: With dead ends: 281 [2022-04-05 05:25:06,839 INFO L226 Difference]: Without dead ends: 201 [2022-04-05 05:25:06,841 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 415 SyntacticMatches, 1 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4379 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=3009, Invalid=12993, Unknown=0, NotChecked=0, Total=16002 [2022-04-05 05:25:06,841 INFO L913 BasicCegarLoop]: 35 mSDtfsCounter, 21 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 740 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-05 05:25:06,842 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 77 Invalid, 849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 740 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-05 05:25:06,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-04-05 05:25:06,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2022-04-05 05:25:06,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 149 states have (on average 1.0134228187919463) internal successors, (151), 150 states have internal predecessors, (151), 26 states have call successors, (26), 26 states have call predecessors, (26), 25 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2022-04-05 05:25:06,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 202 transitions. [2022-04-05 05:25:06,857 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 202 transitions. Word has length 197 [2022-04-05 05:25:06,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:25:06,857 INFO L478 AbstractCegarLoop]: Abstraction has 201 states and 202 transitions. [2022-04-05 05:25:06,858 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 1.7307692307692308) internal successors, (135), 77 states have internal predecessors, (135), 49 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-04-05 05:25:06,858 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 202 transitions. [2022-04-05 05:25:06,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-04-05 05:25:06,858 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:25:06,859 INFO L499 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:25:06,876 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2022-04-05 05:25:07,059 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:25:07,059 INFO L403 AbstractCegarLoop]: === Iteration 49 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:25:07,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:25:07,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1068847583, now seen corresponding path program 46 times [2022-04-05 05:25:07,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:25:07,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287905283] [2022-04-05 05:25:07,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:25:07,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:25:07,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:07,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:25:07,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:07,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-04-05 05:25:07,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:07,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-04-05 05:25:07,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:07,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-04-05 05:25:07,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:07,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-04-05 05:25:07,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:07,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-04-05 05:25:07,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:07,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-04-05 05:25:07,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:07,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-04-05 05:25:07,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:07,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-04-05 05:25:07,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:07,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-04-05 05:25:07,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:07,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-04-05 05:25:07,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:07,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-04-05 05:25:07,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:07,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-04-05 05:25:07,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:07,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-04-05 05:25:07,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:07,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-04-05 05:25:07,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:07,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-04-05 05:25:07,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:07,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-04-05 05:25:07,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:07,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-04-05 05:25:07,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:07,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-04-05 05:25:07,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:07,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-04-05 05:25:07,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:07,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-04-05 05:25:07,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:07,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-04-05 05:25:07,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:07,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-04-05 05:25:07,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:07,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-04-05 05:25:07,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:07,424 INFO L134 CoverageAnalysis]: Checked inductivity of 2163 backedges. 322 proven. 829 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2022-04-05 05:25:07,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:25:07,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287905283] [2022-04-05 05:25:07,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287905283] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:25:07,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631157902] [2022-04-05 05:25:07,425 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-05 05:25:07,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:25:07,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:25:07,427 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:25:07,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-04-05 05:25:07,511 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-05 05:25:07,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:25:07,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 51 conjunts are in the unsatisfiable core [2022-04-05 05:25:07,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:25:07,840 INFO L134 CoverageAnalysis]: Checked inductivity of 2163 backedges. 346 proven. 805 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2022-04-05 05:25:07,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:25:08,150 INFO L134 CoverageAnalysis]: Checked inductivity of 2163 backedges. 346 proven. 805 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2022-04-05 05:25:08,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631157902] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:25:08,151 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:25:08,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 29, 29] total 33 [2022-04-05 05:25:08,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106918296] [2022-04-05 05:25:08,151 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:25:08,152 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-04-05 05:25:08,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:25:08,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-04-05 05:25:08,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=366, Invalid=690, Unknown=0, NotChecked=0, Total=1056 [2022-04-05 05:25:08,152 INFO L87 Difference]: Start difference. First operand 201 states and 202 transitions. Second operand has 33 states, 33 states have (on average 2.6363636363636362) internal successors, (87), 30 states have internal predecessors, (87), 25 states have call successors, (28), 4 states have call predecessors, (28), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-04-05 05:25:08,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:25:08,651 INFO L93 Difference]: Finished difference Result 214 states and 216 transitions. [2022-04-05 05:25:08,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-04-05 05:25:08,652 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.6363636363636362) internal successors, (87), 30 states have internal predecessors, (87), 25 states have call successors, (28), 4 states have call predecessors, (28), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Word has length 198 [2022-04-05 05:25:08,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:25:08,655 INFO L225 Difference]: With dead ends: 214 [2022-04-05 05:25:08,655 INFO L226 Difference]: Without dead ends: 212 [2022-04-05 05:25:08,656 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 525 GetRequests, 463 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 788 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1090, Invalid=2692, Unknown=0, NotChecked=0, Total=3782 [2022-04-05 05:25:08,656 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 82 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-05 05:25:08,658 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 40 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-05 05:25:08,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-04-05 05:25:08,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 208. [2022-04-05 05:25:08,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 154 states have (on average 1.0129870129870129) internal successors, (156), 155 states have internal predecessors, (156), 27 states have call successors, (27), 27 states have call predecessors, (27), 26 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2022-04-05 05:25:08,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 209 transitions. [2022-04-05 05:25:08,677 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 209 transitions. Word has length 198 [2022-04-05 05:25:08,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:25:08,678 INFO L478 AbstractCegarLoop]: Abstraction has 208 states and 209 transitions. [2022-04-05 05:25:08,678 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.6363636363636362) internal successors, (87), 30 states have internal predecessors, (87), 25 states have call successors, (28), 4 states have call predecessors, (28), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-04-05 05:25:08,678 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 209 transitions. [2022-04-05 05:25:08,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-04-05 05:25:08,679 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:25:08,679 INFO L499 BasicCegarLoop]: trace histogram [25, 25, 25, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:25:08,703 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2022-04-05 05:25:08,898 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2022-04-05 05:25:08,898 INFO L403 AbstractCegarLoop]: === Iteration 50 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:25:08,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:25:08,899 INFO L85 PathProgramCache]: Analyzing trace with hash 882722777, now seen corresponding path program 47 times [2022-04-05 05:25:08,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:25:08,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393615393] [2022-04-05 05:25:08,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:25:08,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:25:08,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:09,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:25:09,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:09,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-04-05 05:25:09,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:09,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-04-05 05:25:09,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:09,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-04-05 05:25:09,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:09,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-04-05 05:25:09,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:09,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-04-05 05:25:09,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:09,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-04-05 05:25:09,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:09,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-04-05 05:25:09,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:09,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-04-05 05:25:09,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:09,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-04-05 05:25:09,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:09,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-04-05 05:25:09,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:09,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-04-05 05:25:09,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:09,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-04-05 05:25:09,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:09,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-04-05 05:25:09,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:09,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-04-05 05:25:09,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:09,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-04-05 05:25:09,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:09,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-04-05 05:25:09,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:09,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-04-05 05:25:09,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:09,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-04-05 05:25:09,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:09,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-04-05 05:25:09,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:09,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-04-05 05:25:09,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:09,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-04-05 05:25:09,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:09,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-04-05 05:25:09,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:09,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-04-05 05:25:09,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:09,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-04-05 05:25:09,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:09,691 INFO L134 CoverageAnalysis]: Checked inductivity of 2328 backedges. 854 proven. 370 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2022-04-05 05:25:09,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:25:09,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393615393] [2022-04-05 05:25:09,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393615393] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:25:09,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332758208] [2022-04-05 05:25:09,692 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-05 05:25:09,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:25:09,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:25:09,695 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:25:09,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-04-05 05:25:09,780 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2022-04-05 05:25:09,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:25:09,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 52 conjunts are in the unsatisfiable core [2022-04-05 05:25:09,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:25:10,950 INFO L134 CoverageAnalysis]: Checked inductivity of 2328 backedges. 924 proven. 300 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2022-04-05 05:25:10,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:25:11,281 INFO L134 CoverageAnalysis]: Checked inductivity of 2328 backedges. 924 proven. 300 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2022-04-05 05:25:11,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332758208] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:25:11,281 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:25:11,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 53, 53] total 81 [2022-04-05 05:25:11,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868994623] [2022-04-05 05:25:11,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:25:11,282 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2022-04-05 05:25:11,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:25:11,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2022-04-05 05:25:11,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1437, Invalid=5043, Unknown=0, NotChecked=0, Total=6480 [2022-04-05 05:25:11,283 INFO L87 Difference]: Start difference. First operand 208 states and 209 transitions. Second operand has 81 states, 81 states have (on average 1.728395061728395) internal successors, (140), 80 states have internal predecessors, (140), 51 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-04-05 05:25:12,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:25:12,527 INFO L93 Difference]: Finished difference Result 292 states and 318 transitions. [2022-04-05 05:25:12,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-04-05 05:25:12,528 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 1.728395061728395) internal successors, (140), 80 states have internal predecessors, (140), 51 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Word has length 205 [2022-04-05 05:25:12,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:25:12,529 INFO L225 Difference]: With dead ends: 292 [2022-04-05 05:25:12,529 INFO L226 Difference]: Without dead ends: 209 [2022-04-05 05:25:12,530 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 563 GetRequests, 432 SyntacticMatches, 1 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4737 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=3246, Invalid=14046, Unknown=0, NotChecked=0, Total=17292 [2022-04-05 05:25:12,530 INFO L913 BasicCegarLoop]: 36 mSDtfsCounter, 21 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1141 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 1255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-05 05:25:12,530 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 93 Invalid, 1255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1141 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-05 05:25:12,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-04-05 05:25:12,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2022-04-05 05:25:12,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 155 states have (on average 1.0129032258064516) internal successors, (157), 156 states have internal predecessors, (157), 27 states have call successors, (27), 27 states have call predecessors, (27), 26 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2022-04-05 05:25:12,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 210 transitions. [2022-04-05 05:25:12,553 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 210 transitions. Word has length 205 [2022-04-05 05:25:12,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:25:12,554 INFO L478 AbstractCegarLoop]: Abstraction has 209 states and 210 transitions. [2022-04-05 05:25:12,554 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 1.728395061728395) internal successors, (140), 80 states have internal predecessors, (140), 51 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-04-05 05:25:12,554 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 210 transitions. [2022-04-05 05:25:12,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-04-05 05:25:12,555 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:25:12,555 INFO L499 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:25:12,585 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2022-04-05 05:25:12,780 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2022-04-05 05:25:12,780 INFO L403 AbstractCegarLoop]: === Iteration 51 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:25:12,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:25:12,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1676863395, now seen corresponding path program 48 times [2022-04-05 05:25:12,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:25:12,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326747799] [2022-04-05 05:25:12,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:25:12,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:25:12,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:13,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:25:13,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:13,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-04-05 05:25:13,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:13,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-04-05 05:25:13,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:13,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-04-05 05:25:13,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:13,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-04-05 05:25:13,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:13,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-04-05 05:25:13,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:13,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-04-05 05:25:13,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:13,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-04-05 05:25:13,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:13,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-04-05 05:25:13,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:13,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-04-05 05:25:13,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:13,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-04-05 05:25:13,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:13,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-04-05 05:25:13,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:13,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-04-05 05:25:13,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:13,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-04-05 05:25:13,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:13,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-04-05 05:25:13,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:13,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-04-05 05:25:13,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:13,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-04-05 05:25:13,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:13,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-04-05 05:25:13,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:13,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-04-05 05:25:13,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:13,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-04-05 05:25:13,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:13,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-04-05 05:25:13,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:13,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-04-05 05:25:13,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:13,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-04-05 05:25:13,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:13,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-04-05 05:25:13,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:13,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-04-05 05:25:13,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:13,178 INFO L134 CoverageAnalysis]: Checked inductivity of 2353 backedges. 348 proven. 901 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2022-04-05 05:25:13,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:25:13,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326747799] [2022-04-05 05:25:13,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326747799] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:25:13,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901783450] [2022-04-05 05:25:13,178 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-05 05:25:13,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:25:13,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:25:13,179 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:25:13,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-04-05 05:25:13,274 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2022-04-05 05:25:13,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:25:13,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 53 conjunts are in the unsatisfiable core [2022-04-05 05:25:13,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:25:13,685 INFO L134 CoverageAnalysis]: Checked inductivity of 2353 backedges. 373 proven. 876 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2022-04-05 05:25:13,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:25:14,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2353 backedges. 373 proven. 876 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2022-04-05 05:25:14,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901783450] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:25:14,030 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:25:14,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 30, 30] total 34 [2022-04-05 05:25:14,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202786715] [2022-04-05 05:25:14,031 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:25:14,031 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-04-05 05:25:14,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:25:14,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-04-05 05:25:14,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=393, Invalid=729, Unknown=0, NotChecked=0, Total=1122 [2022-04-05 05:25:14,032 INFO L87 Difference]: Start difference. First operand 209 states and 210 transitions. Second operand has 34 states, 34 states have (on average 2.6470588235294117) internal successors, (90), 31 states have internal predecessors, (90), 26 states have call successors, (29), 4 states have call predecessors, (29), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-04-05 05:25:14,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:25:14,664 INFO L93 Difference]: Finished difference Result 222 states and 224 transitions. [2022-04-05 05:25:14,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-04-05 05:25:14,664 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.6470588235294117) internal successors, (90), 31 states have internal predecessors, (90), 26 states have call successors, (29), 4 states have call predecessors, (29), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Word has length 206 [2022-04-05 05:25:14,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:25:14,666 INFO L225 Difference]: With dead ends: 222 [2022-04-05 05:25:14,666 INFO L226 Difference]: Without dead ends: 220 [2022-04-05 05:25:14,667 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 546 GetRequests, 482 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 833 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1171, Invalid=2861, Unknown=0, NotChecked=0, Total=4032 [2022-04-05 05:25:14,667 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 77 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-05 05:25:14,667 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 50 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-05 05:25:14,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2022-04-05 05:25:14,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 216. [2022-04-05 05:25:14,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 160 states have (on average 1.0125) internal successors, (162), 161 states have internal predecessors, (162), 28 states have call successors, (28), 28 states have call predecessors, (28), 27 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2022-04-05 05:25:14,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 217 transitions. [2022-04-05 05:25:14,683 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 217 transitions. Word has length 206 [2022-04-05 05:25:14,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:25:14,684 INFO L478 AbstractCegarLoop]: Abstraction has 216 states and 217 transitions. [2022-04-05 05:25:14,684 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.6470588235294117) internal successors, (90), 31 states have internal predecessors, (90), 26 states have call successors, (29), 4 states have call predecessors, (29), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-04-05 05:25:14,684 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 217 transitions. [2022-04-05 05:25:14,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-04-05 05:25:14,685 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:25:14,685 INFO L499 BasicCegarLoop]: trace histogram [26, 26, 26, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:25:14,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-04-05 05:25:14,899 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:25:14,899 INFO L403 AbstractCegarLoop]: === Iteration 52 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:25:14,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:25:14,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1879694819, now seen corresponding path program 49 times [2022-04-05 05:25:14,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:25:14,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194394449] [2022-04-05 05:25:14,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:25:14,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:25:14,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:15,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:25:15,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:15,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-04-05 05:25:15,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:15,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-04-05 05:25:15,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:15,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-04-05 05:25:15,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:15,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-04-05 05:25:15,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:15,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-04-05 05:25:15,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:15,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-04-05 05:25:15,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:15,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-04-05 05:25:15,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:15,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-04-05 05:25:15,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:15,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-04-05 05:25:15,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:15,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-04-05 05:25:15,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:15,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-04-05 05:25:15,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:15,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-04-05 05:25:15,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:15,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-04-05 05:25:15,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:15,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-04-05 05:25:15,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:15,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-04-05 05:25:15,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:15,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-04-05 05:25:15,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:15,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-04-05 05:25:15,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:15,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-04-05 05:25:15,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:15,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-04-05 05:25:15,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:15,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-04-05 05:25:15,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:15,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-04-05 05:25:15,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:15,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-04-05 05:25:15,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:15,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-04-05 05:25:15,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:15,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-04-05 05:25:15,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:15,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-04-05 05:25:15,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:15,754 INFO L134 CoverageAnalysis]: Checked inductivity of 2525 backedges. 927 proven. 398 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2022-04-05 05:25:15,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:25:15,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194394449] [2022-04-05 05:25:15,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194394449] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:25:15,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584796571] [2022-04-05 05:25:15,755 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-05 05:25:15,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:25:15,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:25:15,756 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:25:15,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-04-05 05:25:15,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:15,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 54 conjunts are in the unsatisfiable core [2022-04-05 05:25:15,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:25:17,166 INFO L134 CoverageAnalysis]: Checked inductivity of 2525 backedges. 1000 proven. 325 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2022-04-05 05:25:17,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:25:17,517 INFO L134 CoverageAnalysis]: Checked inductivity of 2525 backedges. 1000 proven. 325 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2022-04-05 05:25:17,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584796571] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:25:17,517 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:25:17,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 55, 55] total 84 [2022-04-05 05:25:17,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621385820] [2022-04-05 05:25:17,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:25:17,519 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-04-05 05:25:17,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:25:17,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-04-05 05:25:17,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1546, Invalid=5426, Unknown=0, NotChecked=0, Total=6972 [2022-04-05 05:25:17,520 INFO L87 Difference]: Start difference. First operand 216 states and 217 transitions. Second operand has 84 states, 84 states have (on average 1.7261904761904763) internal successors, (145), 83 states have internal predecessors, (145), 53 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-04-05 05:25:18,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:25:18,837 INFO L93 Difference]: Finished difference Result 303 states and 330 transitions. [2022-04-05 05:25:18,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-04-05 05:25:18,837 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 1.7261904761904763) internal successors, (145), 83 states have internal predecessors, (145), 53 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) Word has length 213 [2022-04-05 05:25:18,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:25:18,838 INFO L225 Difference]: With dead ends: 303 [2022-04-05 05:25:18,838 INFO L226 Difference]: Without dead ends: 217 [2022-04-05 05:25:18,840 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 585 GetRequests, 449 SyntacticMatches, 1 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5109 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=3492, Invalid=15140, Unknown=0, NotChecked=0, Total=18632 [2022-04-05 05:25:18,840 INFO L913 BasicCegarLoop]: 37 mSDtfsCounter, 21 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1022 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 1136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-05 05:25:18,840 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 84 Invalid, 1136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1022 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-05 05:25:18,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-04-05 05:25:18,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2022-04-05 05:25:18,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 161 states have (on average 1.0124223602484472) internal successors, (163), 162 states have internal predecessors, (163), 28 states have call successors, (28), 28 states have call predecessors, (28), 27 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2022-04-05 05:25:18,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 218 transitions. [2022-04-05 05:25:18,860 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 218 transitions. Word has length 213 [2022-04-05 05:25:18,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:25:18,860 INFO L478 AbstractCegarLoop]: Abstraction has 217 states and 218 transitions. [2022-04-05 05:25:18,860 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 1.7261904761904763) internal successors, (145), 83 states have internal predecessors, (145), 53 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-04-05 05:25:18,860 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 218 transitions. [2022-04-05 05:25:18,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-04-05 05:25:18,861 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:25:18,862 INFO L499 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:25:18,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2022-04-05 05:25:19,075 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2022-04-05 05:25:19,075 INFO L403 AbstractCegarLoop]: === Iteration 53 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:25:19,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:25:19,076 INFO L85 PathProgramCache]: Analyzing trace with hash 635383457, now seen corresponding path program 50 times [2022-04-05 05:25:19,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:25:19,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451690291] [2022-04-05 05:25:19,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:25:19,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:25:19,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:19,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:25:19,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:19,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-04-05 05:25:19,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:19,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-04-05 05:25:19,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:19,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-04-05 05:25:19,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:19,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-04-05 05:25:19,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:19,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-04-05 05:25:19,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:19,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-04-05 05:25:19,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:19,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-04-05 05:25:19,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:19,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-04-05 05:25:19,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:19,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-04-05 05:25:19,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:19,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-04-05 05:25:19,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:19,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-04-05 05:25:19,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:19,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-04-05 05:25:19,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:19,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-04-05 05:25:19,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:19,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-04-05 05:25:19,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:19,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-04-05 05:25:19,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:19,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-04-05 05:25:19,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:19,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-04-05 05:25:19,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:19,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-04-05 05:25:19,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:19,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-04-05 05:25:19,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:19,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-04-05 05:25:19,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:19,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-04-05 05:25:19,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:19,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-04-05 05:25:19,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:19,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-04-05 05:25:19,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:19,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-04-05 05:25:19,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:19,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-04-05 05:25:19,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:19,469 INFO L134 CoverageAnalysis]: Checked inductivity of 2551 backedges. 375 proven. 976 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2022-04-05 05:25:19,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:25:19,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451690291] [2022-04-05 05:25:19,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451690291] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:25:19,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244392082] [2022-04-05 05:25:19,470 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 05:25:19,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:25:19,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:25:19,471 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:25:19,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-04-05 05:25:19,545 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 05:25:19,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:25:19,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 55 conjunts are in the unsatisfiable core [2022-04-05 05:25:19,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:25:19,901 INFO L134 CoverageAnalysis]: Checked inductivity of 2551 backedges. 401 proven. 950 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2022-04-05 05:25:19,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:25:20,234 INFO L134 CoverageAnalysis]: Checked inductivity of 2551 backedges. 401 proven. 950 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2022-04-05 05:25:20,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244392082] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:25:20,234 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:25:20,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 31, 31] total 35 [2022-04-05 05:25:20,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702891245] [2022-04-05 05:25:20,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:25:20,235 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-04-05 05:25:20,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:25:20,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-04-05 05:25:20,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=421, Invalid=769, Unknown=0, NotChecked=0, Total=1190 [2022-04-05 05:25:20,236 INFO L87 Difference]: Start difference. First operand 217 states and 218 transitions. Second operand has 35 states, 35 states have (on average 2.657142857142857) internal successors, (93), 32 states have internal predecessors, (93), 27 states have call successors, (30), 4 states have call predecessors, (30), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-04-05 05:25:20,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:25:20,757 INFO L93 Difference]: Finished difference Result 230 states and 232 transitions. [2022-04-05 05:25:20,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-04-05 05:25:20,758 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.657142857142857) internal successors, (93), 32 states have internal predecessors, (93), 27 states have call successors, (30), 4 states have call predecessors, (30), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Word has length 214 [2022-04-05 05:25:20,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:25:20,759 INFO L225 Difference]: With dead ends: 230 [2022-04-05 05:25:20,759 INFO L226 Difference]: Without dead ends: 228 [2022-04-05 05:25:20,759 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 567 GetRequests, 501 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 879 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1255, Invalid=3035, Unknown=0, NotChecked=0, Total=4290 [2022-04-05 05:25:20,763 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 88 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-05 05:25:20,763 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 45 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-05 05:25:20,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2022-04-05 05:25:20,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 224. [2022-04-05 05:25:20,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 166 states have (on average 1.0120481927710843) internal successors, (168), 167 states have internal predecessors, (168), 29 states have call successors, (29), 29 states have call predecessors, (29), 28 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2022-04-05 05:25:20,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 225 transitions. [2022-04-05 05:25:20,785 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 225 transitions. Word has length 214 [2022-04-05 05:25:20,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:25:20,786 INFO L478 AbstractCegarLoop]: Abstraction has 224 states and 225 transitions. [2022-04-05 05:25:20,786 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.657142857142857) internal successors, (93), 32 states have internal predecessors, (93), 27 states have call successors, (30), 4 states have call predecessors, (30), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-04-05 05:25:20,786 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 225 transitions. [2022-04-05 05:25:20,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2022-04-05 05:25:20,787 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:25:20,787 INFO L499 BasicCegarLoop]: trace histogram [27, 27, 27, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:25:20,809 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2022-04-05 05:25:21,003 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:25:21,003 INFO L403 AbstractCegarLoop]: === Iteration 54 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:25:21,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:25:21,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1483786407, now seen corresponding path program 51 times [2022-04-05 05:25:21,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:25:21,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441741614] [2022-04-05 05:25:21,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:25:21,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:25:21,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:21,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:25:21,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:21,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-04-05 05:25:21,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:21,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-04-05 05:25:21,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:21,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-04-05 05:25:21,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:21,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-04-05 05:25:21,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:21,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-04-05 05:25:21,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:21,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-04-05 05:25:21,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:21,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-04-05 05:25:21,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:21,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-04-05 05:25:21,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:21,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-04-05 05:25:21,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:21,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-04-05 05:25:21,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:21,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-04-05 05:25:21,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:21,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-04-05 05:25:21,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:21,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-04-05 05:25:21,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:21,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-04-05 05:25:21,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:21,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-04-05 05:25:21,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:21,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-04-05 05:25:21,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:21,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-04-05 05:25:21,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:21,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-04-05 05:25:21,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:21,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-04-05 05:25:21,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:21,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-04-05 05:25:21,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:21,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-04-05 05:25:21,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:21,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-04-05 05:25:21,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:21,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-04-05 05:25:21,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:21,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-04-05 05:25:21,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:21,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-04-05 05:25:21,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:21,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-04-05 05:25:21,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:21,867 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 1003 proven. 427 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2022-04-05 05:25:21,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:25:21,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441741614] [2022-04-05 05:25:21,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441741614] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:25:21,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970553474] [2022-04-05 05:25:21,867 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-05 05:25:21,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:25:21,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:25:21,868 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:25:21,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-04-05 05:25:21,963 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2022-04-05 05:25:21,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:25:21,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 56 conjunts are in the unsatisfiable core [2022-04-05 05:25:21,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:25:23,319 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 1079 proven. 351 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2022-04-05 05:25:23,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:25:23,681 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 1079 proven. 351 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2022-04-05 05:25:23,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [970553474] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:25:23,682 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:25:23,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 57, 57] total 87 [2022-04-05 05:25:23,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426327582] [2022-04-05 05:25:23,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:25:23,682 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2022-04-05 05:25:23,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:25:23,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2022-04-05 05:25:23,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1659, Invalid=5823, Unknown=0, NotChecked=0, Total=7482 [2022-04-05 05:25:23,684 INFO L87 Difference]: Start difference. First operand 224 states and 225 transitions. Second operand has 87 states, 87 states have (on average 1.7241379310344827) internal successors, (150), 86 states have internal predecessors, (150), 55 states have call successors, (57), 3 states have call predecessors, (57), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2022-04-05 05:25:25,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:25:25,152 INFO L93 Difference]: Finished difference Result 314 states and 342 transitions. [2022-04-05 05:25:25,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-04-05 05:25:25,153 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 1.7241379310344827) internal successors, (150), 86 states have internal predecessors, (150), 55 states have call successors, (57), 3 states have call predecessors, (57), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) Word has length 221 [2022-04-05 05:25:25,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:25:25,154 INFO L225 Difference]: With dead ends: 314 [2022-04-05 05:25:25,154 INFO L226 Difference]: Without dead ends: 225 [2022-04-05 05:25:25,155 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 607 GetRequests, 466 SyntacticMatches, 1 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5495 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=3747, Invalid=16275, Unknown=0, NotChecked=0, Total=20022 [2022-04-05 05:25:25,155 INFO L913 BasicCegarLoop]: 38 mSDtfsCounter, 21 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 1602 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 1723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-05 05:25:25,156 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 115 Invalid, 1723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1602 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-05 05:25:25,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2022-04-05 05:25:25,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2022-04-05 05:25:25,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 167 states have (on average 1.0119760479041917) internal successors, (169), 168 states have internal predecessors, (169), 29 states have call successors, (29), 29 states have call predecessors, (29), 28 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2022-04-05 05:25:25,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 226 transitions. [2022-04-05 05:25:25,173 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 226 transitions. Word has length 221 [2022-04-05 05:25:25,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:25:25,173 INFO L478 AbstractCegarLoop]: Abstraction has 225 states and 226 transitions. [2022-04-05 05:25:25,173 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 1.7241379310344827) internal successors, (150), 86 states have internal predecessors, (150), 55 states have call successors, (57), 3 states have call predecessors, (57), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2022-04-05 05:25:25,173 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 226 transitions. [2022-04-05 05:25:25,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-04-05 05:25:25,174 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:25:25,174 INFO L499 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:25:25,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2022-04-05 05:25:25,397 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2022-04-05 05:25:25,398 INFO L403 AbstractCegarLoop]: === Iteration 55 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:25:25,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:25:25,398 INFO L85 PathProgramCache]: Analyzing trace with hash -319455267, now seen corresponding path program 52 times [2022-04-05 05:25:25,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:25:25,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311813291] [2022-04-05 05:25:25,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:25:25,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:25:25,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:25,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:25:25,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:25,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-04-05 05:25:25,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:25,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-04-05 05:25:25,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:25,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-04-05 05:25:25,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:25,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-04-05 05:25:25,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:25,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-04-05 05:25:25,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:25,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-04-05 05:25:25,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:25,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-04-05 05:25:25,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:25,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-04-05 05:25:25,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:25,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-04-05 05:25:25,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:25,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-04-05 05:25:25,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:25,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-04-05 05:25:25,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:25,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-04-05 05:25:25,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:25,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-04-05 05:25:25,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:25,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-04-05 05:25:25,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:25,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-04-05 05:25:25,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:25,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-04-05 05:25:25,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:25,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-04-05 05:25:25,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:25,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-04-05 05:25:25,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:25,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-04-05 05:25:25,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:25,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-04-05 05:25:25,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:25,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-04-05 05:25:25,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:25,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-04-05 05:25:25,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:25,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-04-05 05:25:25,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:25,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-04-05 05:25:25,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:25,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-04-05 05:25:25,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:25,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-04-05 05:25:25,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:25,847 INFO L134 CoverageAnalysis]: Checked inductivity of 2757 backedges. 403 proven. 1054 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2022-04-05 05:25:25,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:25:25,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311813291] [2022-04-05 05:25:25,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311813291] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:25:25,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591604478] [2022-04-05 05:25:25,848 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-05 05:25:25,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:25:25,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:25:25,852 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:25:25,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-04-05 05:25:25,945 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-05 05:25:25,945 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:25:25,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 57 conjunts are in the unsatisfiable core [2022-04-05 05:25:25,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:25:26,256 INFO L134 CoverageAnalysis]: Checked inductivity of 2757 backedges. 430 proven. 1027 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2022-04-05 05:25:26,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:25:26,575 INFO L134 CoverageAnalysis]: Checked inductivity of 2757 backedges. 430 proven. 1027 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2022-04-05 05:25:26,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591604478] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:25:26,575 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:25:26,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32, 32] total 36 [2022-04-05 05:25:26,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751505008] [2022-04-05 05:25:26,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:25:26,576 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-04-05 05:25:26,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:25:26,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-04-05 05:25:26,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=450, Invalid=810, Unknown=0, NotChecked=0, Total=1260 [2022-04-05 05:25:26,577 INFO L87 Difference]: Start difference. First operand 225 states and 226 transitions. Second operand has 36 states, 36 states have (on average 2.6666666666666665) internal successors, (96), 33 states have internal predecessors, (96), 28 states have call successors, (31), 4 states have call predecessors, (31), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-04-05 05:25:27,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:25:27,140 INFO L93 Difference]: Finished difference Result 238 states and 240 transitions. [2022-04-05 05:25:27,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-04-05 05:25:27,140 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.6666666666666665) internal successors, (96), 33 states have internal predecessors, (96), 28 states have call successors, (31), 4 states have call predecessors, (31), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Word has length 222 [2022-04-05 05:25:27,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:25:27,141 INFO L225 Difference]: With dead ends: 238 [2022-04-05 05:25:27,141 INFO L226 Difference]: Without dead ends: 236 [2022-04-05 05:25:27,142 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 588 GetRequests, 520 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 926 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1342, Invalid=3214, Unknown=0, NotChecked=0, Total=4556 [2022-04-05 05:25:27,142 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 84 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-05 05:25:27,142 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 45 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-05 05:25:27,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-04-05 05:25:27,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 232. [2022-04-05 05:25:27,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 172 states have (on average 1.0116279069767442) internal successors, (174), 173 states have internal predecessors, (174), 30 states have call successors, (30), 30 states have call predecessors, (30), 29 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2022-04-05 05:25:27,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 233 transitions. [2022-04-05 05:25:27,178 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 233 transitions. Word has length 222 [2022-04-05 05:25:27,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:25:27,179 INFO L478 AbstractCegarLoop]: Abstraction has 232 states and 233 transitions. [2022-04-05 05:25:27,179 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.6666666666666665) internal successors, (96), 33 states have internal predecessors, (96), 28 states have call successors, (31), 4 states have call predecessors, (31), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-04-05 05:25:27,179 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 233 transitions. [2022-04-05 05:25:27,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2022-04-05 05:25:27,180 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:25:27,180 INFO L499 BasicCegarLoop]: trace histogram [28, 28, 28, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:25:27,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2022-04-05 05:25:27,403 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2022-04-05 05:25:27,403 INFO L403 AbstractCegarLoop]: === Iteration 56 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:25:27,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:25:27,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1941064349, now seen corresponding path program 53 times [2022-04-05 05:25:27,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:25:27,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012187265] [2022-04-05 05:25:27,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:25:27,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:25:27,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:28,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:25:28,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:28,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-04-05 05:25:28,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:28,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-04-05 05:25:28,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:28,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-04-05 05:25:28,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:28,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-04-05 05:25:28,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:28,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-04-05 05:25:28,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:28,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-04-05 05:25:28,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:28,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-04-05 05:25:28,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:28,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-04-05 05:25:28,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:28,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-04-05 05:25:28,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:28,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-04-05 05:25:28,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:28,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-04-05 05:25:28,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:28,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-04-05 05:25:28,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:28,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-04-05 05:25:28,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:28,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-04-05 05:25:28,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:28,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-04-05 05:25:28,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:28,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-04-05 05:25:28,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:28,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-04-05 05:25:28,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:28,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-04-05 05:25:28,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:28,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-04-05 05:25:28,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:28,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-04-05 05:25:28,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:28,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-04-05 05:25:28,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:28,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-04-05 05:25:28,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:28,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-04-05 05:25:28,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:28,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-04-05 05:25:28,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:28,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-04-05 05:25:28,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:28,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-04-05 05:25:28,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:28,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-04-05 05:25:28,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:28,331 INFO L134 CoverageAnalysis]: Checked inductivity of 2943 backedges. 1082 proven. 457 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2022-04-05 05:25:28,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:25:28,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012187265] [2022-04-05 05:25:28,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012187265] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:25:28,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521989043] [2022-04-05 05:25:28,332 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-05 05:25:28,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:25:28,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:25:28,333 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:25:28,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-04-05 05:25:28,431 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2022-04-05 05:25:28,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:25:28,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 58 conjunts are in the unsatisfiable core [2022-04-05 05:25:28,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:25:29,866 INFO L134 CoverageAnalysis]: Checked inductivity of 2943 backedges. 1161 proven. 378 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2022-04-05 05:25:29,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:25:30,232 INFO L134 CoverageAnalysis]: Checked inductivity of 2943 backedges. 1161 proven. 378 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2022-04-05 05:25:30,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521989043] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:25:30,232 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:25:30,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 59, 59] total 90 [2022-04-05 05:25:30,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798011494] [2022-04-05 05:25:30,232 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:25:30,233 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2022-04-05 05:25:30,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:25:30,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2022-04-05 05:25:30,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1776, Invalid=6234, Unknown=0, NotChecked=0, Total=8010 [2022-04-05 05:25:30,234 INFO L87 Difference]: Start difference. First operand 232 states and 233 transitions. Second operand has 90 states, 90 states have (on average 1.7222222222222223) internal successors, (155), 89 states have internal predecessors, (155), 57 states have call successors, (59), 3 states have call predecessors, (59), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2022-04-05 05:25:31,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:25:31,739 INFO L93 Difference]: Finished difference Result 325 states and 354 transitions. [2022-04-05 05:25:31,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-04-05 05:25:31,739 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 1.7222222222222223) internal successors, (155), 89 states have internal predecessors, (155), 57 states have call successors, (59), 3 states have call predecessors, (59), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) Word has length 229 [2022-04-05 05:25:31,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:25:31,740 INFO L225 Difference]: With dead ends: 325 [2022-04-05 05:25:31,740 INFO L226 Difference]: Without dead ends: 233 [2022-04-05 05:25:31,742 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 629 GetRequests, 483 SyntacticMatches, 1 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5895 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=4011, Invalid=17451, Unknown=0, NotChecked=0, Total=21462 [2022-04-05 05:25:31,743 INFO L913 BasicCegarLoop]: 39 mSDtfsCounter, 21 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1449 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 1571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 1449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-05 05:25:31,743 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 106 Invalid, 1571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 1449 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-05 05:25:31,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2022-04-05 05:25:31,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2022-04-05 05:25:31,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 173 states have (on average 1.0115606936416186) internal successors, (175), 174 states have internal predecessors, (175), 30 states have call successors, (30), 30 states have call predecessors, (30), 29 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2022-04-05 05:25:31,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 234 transitions. [2022-04-05 05:25:31,775 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 234 transitions. Word has length 229 [2022-04-05 05:25:31,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:25:31,775 INFO L478 AbstractCegarLoop]: Abstraction has 233 states and 234 transitions. [2022-04-05 05:25:31,775 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 1.7222222222222223) internal successors, (155), 89 states have internal predecessors, (155), 57 states have call successors, (59), 3 states have call predecessors, (59), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2022-04-05 05:25:31,775 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 234 transitions. [2022-04-05 05:25:31,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-04-05 05:25:31,776 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:25:31,777 INFO L499 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:25:31,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2022-04-05 05:25:31,993 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:25:31,993 INFO L403 AbstractCegarLoop]: === Iteration 57 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:25:31,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:25:31,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1516646623, now seen corresponding path program 54 times [2022-04-05 05:25:31,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:25:31,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808971430] [2022-04-05 05:25:31,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:25:31,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:25:32,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:32,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:25:32,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:32,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-04-05 05:25:32,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:32,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-04-05 05:25:32,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:32,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-04-05 05:25:32,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:32,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-04-05 05:25:32,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:32,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-04-05 05:25:32,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:32,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-04-05 05:25:32,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:32,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-04-05 05:25:32,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:32,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-04-05 05:25:32,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:32,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-04-05 05:25:32,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:32,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-04-05 05:25:32,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:32,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-04-05 05:25:32,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:32,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-04-05 05:25:32,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:32,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-04-05 05:25:32,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:32,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-04-05 05:25:32,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:32,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-04-05 05:25:32,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:32,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-04-05 05:25:32,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:32,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-04-05 05:25:32,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:32,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-04-05 05:25:32,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:32,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-04-05 05:25:32,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:32,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-04-05 05:25:32,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:32,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-04-05 05:25:32,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:32,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-04-05 05:25:32,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:32,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-04-05 05:25:32,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:32,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-04-05 05:25:32,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:32,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-04-05 05:25:32,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:32,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-04-05 05:25:32,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:32,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-04-05 05:25:32,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:32,458 INFO L134 CoverageAnalysis]: Checked inductivity of 2971 backedges. 432 proven. 1135 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2022-04-05 05:25:32,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:25:32,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808971430] [2022-04-05 05:25:32,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808971430] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:25:32,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588917407] [2022-04-05 05:25:32,458 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-05 05:25:32,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:25:32,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:25:32,460 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:25:32,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-04-05 05:25:32,576 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2022-04-05 05:25:32,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:25:32,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 59 conjunts are in the unsatisfiable core [2022-04-05 05:25:32,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:25:32,902 INFO L134 CoverageAnalysis]: Checked inductivity of 2971 backedges. 460 proven. 1107 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2022-04-05 05:25:32,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:25:33,254 INFO L134 CoverageAnalysis]: Checked inductivity of 2971 backedges. 460 proven. 1107 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2022-04-05 05:25:33,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588917407] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:25:33,254 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:25:33,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 33, 33] total 37 [2022-04-05 05:25:33,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289930557] [2022-04-05 05:25:33,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:25:33,255 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-04-05 05:25:33,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:25:33,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-04-05 05:25:33,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=480, Invalid=852, Unknown=0, NotChecked=0, Total=1332 [2022-04-05 05:25:33,255 INFO L87 Difference]: Start difference. First operand 233 states and 234 transitions. Second operand has 37 states, 37 states have (on average 2.675675675675676) internal successors, (99), 34 states have internal predecessors, (99), 29 states have call successors, (32), 4 states have call predecessors, (32), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2022-04-05 05:25:33,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:25:33,876 INFO L93 Difference]: Finished difference Result 246 states and 248 transitions. [2022-04-05 05:25:33,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-04-05 05:25:33,877 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.675675675675676) internal successors, (99), 34 states have internal predecessors, (99), 29 states have call successors, (32), 4 states have call predecessors, (32), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Word has length 230 [2022-04-05 05:25:33,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:25:33,878 INFO L225 Difference]: With dead ends: 246 [2022-04-05 05:25:33,878 INFO L226 Difference]: Without dead ends: 244 [2022-04-05 05:25:33,879 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 609 GetRequests, 539 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 974 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1432, Invalid=3398, Unknown=0, NotChecked=0, Total=4830 [2022-04-05 05:25:33,879 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 94 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-05 05:25:33,879 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 40 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-05 05:25:33,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2022-04-05 05:25:33,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 240. [2022-04-05 05:25:33,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 178 states have (on average 1.0112359550561798) internal successors, (180), 179 states have internal predecessors, (180), 31 states have call successors, (31), 31 states have call predecessors, (31), 30 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2022-04-05 05:25:33,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 241 transitions. [2022-04-05 05:25:33,903 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 241 transitions. Word has length 230 [2022-04-05 05:25:33,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:25:33,903 INFO L478 AbstractCegarLoop]: Abstraction has 240 states and 241 transitions. [2022-04-05 05:25:33,904 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.675675675675676) internal successors, (99), 34 states have internal predecessors, (99), 29 states have call successors, (32), 4 states have call predecessors, (32), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2022-04-05 05:25:33,904 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 241 transitions. [2022-04-05 05:25:33,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-04-05 05:25:33,905 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:25:33,905 INFO L499 BasicCegarLoop]: trace histogram [29, 29, 29, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:25:33,925 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2022-04-05 05:25:34,115 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:25:34,115 INFO L403 AbstractCegarLoop]: === Iteration 58 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:25:34,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:25:34,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1892219175, now seen corresponding path program 55 times [2022-04-05 05:25:34,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:25:34,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910159122] [2022-04-05 05:25:34,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:25:34,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:25:34,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:35,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:25:35,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:35,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-04-05 05:25:35,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:35,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-04-05 05:25:35,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:35,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-04-05 05:25:35,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:35,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-04-05 05:25:35,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:35,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-04-05 05:25:35,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:35,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-04-05 05:25:35,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:35,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-04-05 05:25:35,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:35,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-04-05 05:25:35,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:35,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-04-05 05:25:35,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:35,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-04-05 05:25:35,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:35,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-04-05 05:25:35,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:35,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-04-05 05:25:35,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:35,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-04-05 05:25:35,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:35,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-04-05 05:25:35,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:35,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-04-05 05:25:35,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:35,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-04-05 05:25:35,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:35,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-04-05 05:25:35,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:35,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-04-05 05:25:35,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:35,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-04-05 05:25:35,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:35,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-04-05 05:25:35,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:35,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-04-05 05:25:35,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:35,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-04-05 05:25:35,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:35,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-04-05 05:25:35,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:35,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-04-05 05:25:35,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:35,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-04-05 05:25:35,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:35,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-04-05 05:25:35,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:35,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-04-05 05:25:35,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:35,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-04-05 05:25:35,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:35,104 INFO L134 CoverageAnalysis]: Checked inductivity of 3164 backedges. 1164 proven. 488 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2022-04-05 05:25:35,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:25:35,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910159122] [2022-04-05 05:25:35,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910159122] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:25:35,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307754488] [2022-04-05 05:25:35,105 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-05 05:25:35,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:25:35,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:25:35,108 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:25:35,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-04-05 05:25:35,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:35,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 588 conjuncts, 60 conjunts are in the unsatisfiable core [2022-04-05 05:25:35,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:25:36,768 INFO L134 CoverageAnalysis]: Checked inductivity of 3164 backedges. 1246 proven. 406 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2022-04-05 05:25:36,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:25:37,145 INFO L134 CoverageAnalysis]: Checked inductivity of 3164 backedges. 1246 proven. 406 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2022-04-05 05:25:37,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307754488] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:25:37,145 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:25:37,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 61, 61] total 93 [2022-04-05 05:25:37,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882283540] [2022-04-05 05:25:37,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:25:37,146 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2022-04-05 05:25:37,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:25:37,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2022-04-05 05:25:37,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1897, Invalid=6659, Unknown=0, NotChecked=0, Total=8556 [2022-04-05 05:25:37,147 INFO L87 Difference]: Start difference. First operand 240 states and 241 transitions. Second operand has 93 states, 93 states have (on average 1.7204301075268817) internal successors, (160), 92 states have internal predecessors, (160), 59 states have call successors, (61), 3 states have call predecessors, (61), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2022-04-05 05:25:38,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:25:38,689 INFO L93 Difference]: Finished difference Result 336 states and 366 transitions. [2022-04-05 05:25:38,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-04-05 05:25:38,689 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 1.7204301075268817) internal successors, (160), 92 states have internal predecessors, (160), 59 states have call successors, (61), 3 states have call predecessors, (61), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) Word has length 237 [2022-04-05 05:25:38,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:25:38,690 INFO L225 Difference]: With dead ends: 336 [2022-04-05 05:25:38,690 INFO L226 Difference]: Without dead ends: 241 [2022-04-05 05:25:38,692 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 651 GetRequests, 500 SyntacticMatches, 1 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6309 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=4284, Invalid=18668, Unknown=0, NotChecked=0, Total=22952 [2022-04-05 05:25:38,692 INFO L913 BasicCegarLoop]: 40 mSDtfsCounter, 21 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1334 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 1463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 1334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-05 05:25:38,692 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 97 Invalid, 1463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 1334 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-05 05:25:38,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-04-05 05:25:38,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2022-04-05 05:25:38,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 179 states have (on average 1.011173184357542) internal successors, (181), 180 states have internal predecessors, (181), 31 states have call successors, (31), 31 states have call predecessors, (31), 30 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2022-04-05 05:25:38,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 242 transitions. [2022-04-05 05:25:38,710 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 242 transitions. Word has length 237 [2022-04-05 05:25:38,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:25:38,710 INFO L478 AbstractCegarLoop]: Abstraction has 241 states and 242 transitions. [2022-04-05 05:25:38,710 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 93 states have (on average 1.7204301075268817) internal successors, (160), 92 states have internal predecessors, (160), 59 states have call successors, (61), 3 states have call predecessors, (61), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2022-04-05 05:25:38,710 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 242 transitions. [2022-04-05 05:25:38,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2022-04-05 05:25:38,711 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:25:38,711 INFO L499 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:25:38,734 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2022-04-05 05:25:38,927 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:25:38,927 INFO L403 AbstractCegarLoop]: === Iteration 59 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:25:38,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:25:38,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1499216035, now seen corresponding path program 56 times [2022-04-05 05:25:38,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:25:38,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546755079] [2022-04-05 05:25:38,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:25:38,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:25:38,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:39,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:25:39,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:39,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-04-05 05:25:39,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:39,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-04-05 05:25:39,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:39,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-04-05 05:25:39,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:39,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-04-05 05:25:39,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:39,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-04-05 05:25:39,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:39,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-04-05 05:25:39,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:39,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-04-05 05:25:39,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:39,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-04-05 05:25:39,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:39,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-04-05 05:25:39,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:39,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-04-05 05:25:39,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:39,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-04-05 05:25:39,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:39,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-04-05 05:25:39,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:39,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-04-05 05:25:39,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:39,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-04-05 05:25:39,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:39,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-04-05 05:25:39,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:39,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-04-05 05:25:39,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:39,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-04-05 05:25:39,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:39,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-04-05 05:25:39,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:39,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-04-05 05:25:39,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:39,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-04-05 05:25:39,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:39,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-04-05 05:25:39,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:39,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-04-05 05:25:39,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:39,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-04-05 05:25:39,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:39,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-04-05 05:25:39,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:39,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-04-05 05:25:39,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:39,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-04-05 05:25:39,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:39,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-04-05 05:25:39,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:39,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-04-05 05:25:39,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:39,498 INFO L134 CoverageAnalysis]: Checked inductivity of 3193 backedges. 462 proven. 1219 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2022-04-05 05:25:39,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:25:39,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546755079] [2022-04-05 05:25:39,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546755079] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:25:39,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871025713] [2022-04-05 05:25:39,499 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 05:25:39,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:25:39,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:25:39,500 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:25:39,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-04-05 05:25:39,591 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 05:25:39,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:25:39,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 593 conjuncts, 61 conjunts are in the unsatisfiable core [2022-04-05 05:25:39,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:25:39,943 INFO L134 CoverageAnalysis]: Checked inductivity of 3193 backedges. 491 proven. 1190 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2022-04-05 05:25:39,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:25:40,288 INFO L134 CoverageAnalysis]: Checked inductivity of 3193 backedges. 491 proven. 1190 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2022-04-05 05:25:40,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871025713] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:25:40,288 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:25:40,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34, 34] total 38 [2022-04-05 05:25:40,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852438055] [2022-04-05 05:25:40,289 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:25:40,289 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-04-05 05:25:40,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:25:40,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-04-05 05:25:40,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=511, Invalid=895, Unknown=0, NotChecked=0, Total=1406 [2022-04-05 05:25:40,290 INFO L87 Difference]: Start difference. First operand 241 states and 242 transitions. Second operand has 38 states, 38 states have (on average 2.6842105263157894) internal successors, (102), 35 states have internal predecessors, (102), 30 states have call successors, (33), 4 states have call predecessors, (33), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-04-05 05:25:41,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:25:41,054 INFO L93 Difference]: Finished difference Result 254 states and 256 transitions. [2022-04-05 05:25:41,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-04-05 05:25:41,055 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.6842105263157894) internal successors, (102), 35 states have internal predecessors, (102), 30 states have call successors, (33), 4 states have call predecessors, (33), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Word has length 238 [2022-04-05 05:25:41,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:25:41,056 INFO L225 Difference]: With dead ends: 254 [2022-04-05 05:25:41,056 INFO L226 Difference]: Without dead ends: 252 [2022-04-05 05:25:41,057 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 630 GetRequests, 558 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1023 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1525, Invalid=3587, Unknown=0, NotChecked=0, Total=5112 [2022-04-05 05:25:41,057 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 90 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-05 05:25:41,057 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 65 Invalid, 770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-05 05:25:41,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2022-04-05 05:25:41,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 248. [2022-04-05 05:25:41,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 184 states have (on average 1.0108695652173914) internal successors, (186), 185 states have internal predecessors, (186), 32 states have call successors, (32), 32 states have call predecessors, (32), 31 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2022-04-05 05:25:41,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 249 transitions. [2022-04-05 05:25:41,081 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 249 transitions. Word has length 238 [2022-04-05 05:25:41,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:25:41,082 INFO L478 AbstractCegarLoop]: Abstraction has 248 states and 249 transitions. [2022-04-05 05:25:41,082 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.6842105263157894) internal successors, (102), 35 states have internal predecessors, (102), 30 states have call successors, (33), 4 states have call predecessors, (33), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-04-05 05:25:41,082 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 249 transitions. [2022-04-05 05:25:41,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2022-04-05 05:25:41,083 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:25:41,083 INFO L499 BasicCegarLoop]: trace histogram [30, 30, 30, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:25:41,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2022-04-05 05:25:41,303 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2022-04-05 05:25:41,303 INFO L403 AbstractCegarLoop]: === Iteration 60 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:25:41,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:25:41,304 INFO L85 PathProgramCache]: Analyzing trace with hash 2118947613, now seen corresponding path program 57 times [2022-04-05 05:25:41,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:25:41,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204910543] [2022-04-05 05:25:41,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:25:41,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:25:41,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:42,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:25:42,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:42,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-04-05 05:25:42,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:42,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-04-05 05:25:42,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:42,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-04-05 05:25:42,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:42,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-04-05 05:25:42,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:42,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-04-05 05:25:42,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:42,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-04-05 05:25:42,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:42,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-04-05 05:25:42,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:42,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-04-05 05:25:42,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:42,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-04-05 05:25:42,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:42,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-04-05 05:25:42,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:42,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-04-05 05:25:42,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:42,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-04-05 05:25:42,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:42,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-04-05 05:25:42,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:42,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-04-05 05:25:42,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:42,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-04-05 05:25:42,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:42,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-04-05 05:25:42,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:42,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-04-05 05:25:42,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:42,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-04-05 05:25:42,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:42,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-04-05 05:25:42,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:42,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-04-05 05:25:42,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:42,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-04-05 05:25:42,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:42,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-04-05 05:25:42,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:42,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-04-05 05:25:42,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:42,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-04-05 05:25:42,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:42,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-04-05 05:25:42,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:42,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-04-05 05:25:42,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:42,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-04-05 05:25:42,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:42,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-04-05 05:25:42,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:42,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-04-05 05:25:42,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:42,513 INFO L134 CoverageAnalysis]: Checked inductivity of 3393 backedges. 1249 proven. 520 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2022-04-05 05:25:42,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:25:42,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204910543] [2022-04-05 05:25:42,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204910543] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:25:42,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698976808] [2022-04-05 05:25:42,514 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-05 05:25:42,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:25:42,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:25:42,516 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:25:42,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-04-05 05:25:42,656 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2022-04-05 05:25:42,656 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:25:42,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 62 conjunts are in the unsatisfiable core [2022-04-05 05:25:42,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:25:44,313 INFO L134 CoverageAnalysis]: Checked inductivity of 3393 backedges. 1334 proven. 435 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2022-04-05 05:25:44,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:25:44,703 INFO L134 CoverageAnalysis]: Checked inductivity of 3393 backedges. 1334 proven. 435 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2022-04-05 05:25:44,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1698976808] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:25:44,703 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:25:44,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 63, 63] total 96 [2022-04-05 05:25:44,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772572663] [2022-04-05 05:25:44,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:25:44,704 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-04-05 05:25:44,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:25:44,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-04-05 05:25:44,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2022, Invalid=7098, Unknown=0, NotChecked=0, Total=9120 [2022-04-05 05:25:44,705 INFO L87 Difference]: Start difference. First operand 248 states and 249 transitions. Second operand has 96 states, 96 states have (on average 1.71875) internal successors, (165), 95 states have internal predecessors, (165), 61 states have call successors, (63), 3 states have call predecessors, (63), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2022-04-05 05:25:46,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:25:46,361 INFO L93 Difference]: Finished difference Result 347 states and 378 transitions. [2022-04-05 05:25:46,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-04-05 05:25:46,362 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 1.71875) internal successors, (165), 95 states have internal predecessors, (165), 61 states have call successors, (63), 3 states have call predecessors, (63), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) Word has length 245 [2022-04-05 05:25:46,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:25:46,363 INFO L225 Difference]: With dead ends: 347 [2022-04-05 05:25:46,363 INFO L226 Difference]: Without dead ends: 249 [2022-04-05 05:25:46,369 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 673 GetRequests, 517 SyntacticMatches, 1 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6737 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=4566, Invalid=19926, Unknown=0, NotChecked=0, Total=24492 [2022-04-05 05:25:46,370 INFO L913 BasicCegarLoop]: 41 mSDtfsCounter, 21 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1401 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 1530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 1401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-05 05:25:46,370 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 88 Invalid, 1530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 1401 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-05 05:25:46,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2022-04-05 05:25:46,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2022-04-05 05:25:46,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 185 states have (on average 1.0108108108108107) internal successors, (187), 186 states have internal predecessors, (187), 32 states have call successors, (32), 32 states have call predecessors, (32), 31 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2022-04-05 05:25:46,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 250 transitions. [2022-04-05 05:25:46,396 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 250 transitions. Word has length 245 [2022-04-05 05:25:46,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:25:46,396 INFO L478 AbstractCegarLoop]: Abstraction has 249 states and 250 transitions. [2022-04-05 05:25:46,397 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 1.71875) internal successors, (165), 95 states have internal predecessors, (165), 61 states have call successors, (63), 3 states have call predecessors, (63), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2022-04-05 05:25:46,397 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 250 transitions. [2022-04-05 05:25:46,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2022-04-05 05:25:46,398 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:25:46,398 INFO L499 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:25:46,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2022-04-05 05:25:46,619 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2022-04-05 05:25:46,619 INFO L403 AbstractCegarLoop]: === Iteration 61 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:25:46,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:25:46,620 INFO L85 PathProgramCache]: Analyzing trace with hash 809668513, now seen corresponding path program 58 times [2022-04-05 05:25:46,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:25:46,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265677158] [2022-04-05 05:25:46,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:25:46,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:25:46,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:47,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:25:47,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:47,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-04-05 05:25:47,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:47,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-04-05 05:25:47,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:47,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-04-05 05:25:47,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:47,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-04-05 05:25:47,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:47,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-04-05 05:25:47,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:47,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-04-05 05:25:47,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:47,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-04-05 05:25:47,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:47,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-04-05 05:25:47,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:47,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-04-05 05:25:47,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:47,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-04-05 05:25:47,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:47,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-04-05 05:25:47,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:47,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-04-05 05:25:47,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:47,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-04-05 05:25:47,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:47,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-04-05 05:25:47,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:47,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-04-05 05:25:47,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:47,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-04-05 05:25:47,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:47,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-04-05 05:25:47,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:47,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-04-05 05:25:47,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:47,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-04-05 05:25:47,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:47,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-04-05 05:25:47,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:47,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-04-05 05:25:47,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:47,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-04-05 05:25:47,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:47,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-04-05 05:25:47,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:47,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-04-05 05:25:47,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:47,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-04-05 05:25:47,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:47,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-04-05 05:25:47,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:47,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-04-05 05:25:47,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:47,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-04-05 05:25:47,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:47,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-04-05 05:25:47,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:47,118 INFO L134 CoverageAnalysis]: Checked inductivity of 3423 backedges. 493 proven. 1306 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2022-04-05 05:25:47,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:25:47,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265677158] [2022-04-05 05:25:47,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265677158] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:25:47,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206326142] [2022-04-05 05:25:47,118 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-05 05:25:47,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:25:47,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:25:47,119 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:25:47,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-04-05 05:25:47,204 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-05 05:25:47,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:25:47,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 63 conjunts are in the unsatisfiable core [2022-04-05 05:25:47,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:25:47,549 INFO L134 CoverageAnalysis]: Checked inductivity of 3423 backedges. 523 proven. 1276 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2022-04-05 05:25:47,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:25:47,901 INFO L134 CoverageAnalysis]: Checked inductivity of 3423 backedges. 523 proven. 1276 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2022-04-05 05:25:47,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206326142] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:25:47,902 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:25:47,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 35, 35] total 39 [2022-04-05 05:25:47,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110867133] [2022-04-05 05:25:47,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:25:47,902 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-04-05 05:25:47,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:25:47,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-04-05 05:25:47,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=543, Invalid=939, Unknown=0, NotChecked=0, Total=1482 [2022-04-05 05:25:47,903 INFO L87 Difference]: Start difference. First operand 249 states and 250 transitions. Second operand has 39 states, 39 states have (on average 2.6923076923076925) internal successors, (105), 36 states have internal predecessors, (105), 31 states have call successors, (34), 4 states have call predecessors, (34), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2022-04-05 05:25:48,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:25:48,552 INFO L93 Difference]: Finished difference Result 262 states and 264 transitions. [2022-04-05 05:25:48,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-04-05 05:25:48,552 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.6923076923076925) internal successors, (105), 36 states have internal predecessors, (105), 31 states have call successors, (34), 4 states have call predecessors, (34), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Word has length 246 [2022-04-05 05:25:48,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:25:48,553 INFO L225 Difference]: With dead ends: 262 [2022-04-05 05:25:48,553 INFO L226 Difference]: Without dead ends: 260 [2022-04-05 05:25:48,554 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 651 GetRequests, 577 SyntacticMatches, 2 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1073 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1621, Invalid=3781, Unknown=0, NotChecked=0, Total=5402 [2022-04-05 05:25:48,554 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 93 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 654 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-05 05:25:48,554 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 40 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 654 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-05 05:25:48,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-04-05 05:25:48,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 256. [2022-04-05 05:25:48,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 190 states have (on average 1.0105263157894737) internal successors, (192), 191 states have internal predecessors, (192), 33 states have call successors, (33), 33 states have call predecessors, (33), 32 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2022-04-05 05:25:48,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 257 transitions. [2022-04-05 05:25:48,571 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 257 transitions. Word has length 246 [2022-04-05 05:25:48,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:25:48,572 INFO L478 AbstractCegarLoop]: Abstraction has 256 states and 257 transitions. [2022-04-05 05:25:48,572 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.6923076923076925) internal successors, (105), 36 states have internal predecessors, (105), 31 states have call successors, (34), 4 states have call predecessors, (34), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2022-04-05 05:25:48,572 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 257 transitions. [2022-04-05 05:25:48,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2022-04-05 05:25:48,573 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:25:48,573 INFO L499 BasicCegarLoop]: trace histogram [31, 31, 31, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:25:48,592 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2022-04-05 05:25:48,784 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:25:48,784 INFO L403 AbstractCegarLoop]: === Iteration 62 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:25:48,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:25:48,784 INFO L85 PathProgramCache]: Analyzing trace with hash 164410969, now seen corresponding path program 59 times [2022-04-05 05:25:48,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:25:48,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441924046] [2022-04-05 05:25:48,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:25:48,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:25:48,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:49,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:25:49,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:49,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-04-05 05:25:49,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:49,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-04-05 05:25:49,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:49,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-04-05 05:25:49,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:49,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-04-05 05:25:49,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:49,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-04-05 05:25:49,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:49,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-04-05 05:25:49,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:49,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-04-05 05:25:49,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:49,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-04-05 05:25:49,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:49,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-04-05 05:25:49,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:49,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-04-05 05:25:49,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:49,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-04-05 05:25:49,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:49,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-04-05 05:25:49,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:49,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-04-05 05:25:49,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:49,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-04-05 05:25:49,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:49,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-04-05 05:25:49,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:49,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-04-05 05:25:49,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:49,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-04-05 05:25:49,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:49,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-04-05 05:25:49,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:49,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-04-05 05:25:49,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:49,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-04-05 05:25:49,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:49,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-04-05 05:25:49,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:49,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-04-05 05:25:49,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:49,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-04-05 05:25:49,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:49,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-04-05 05:25:49,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:49,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-04-05 05:25:49,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:49,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-04-05 05:25:49,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:49,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-04-05 05:25:49,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:49,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-04-05 05:25:49,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:49,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-04-05 05:25:49,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:49,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-04-05 05:25:49,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:49,913 INFO L134 CoverageAnalysis]: Checked inductivity of 3630 backedges. 1337 proven. 553 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2022-04-05 05:25:49,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:25:49,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441924046] [2022-04-05 05:25:49,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441924046] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:25:49,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099299541] [2022-04-05 05:25:49,914 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-05 05:25:49,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:25:49,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:25:49,915 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:25:49,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-04-05 05:25:50,054 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2022-04-05 05:25:50,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:25:50,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 626 conjuncts, 64 conjunts are in the unsatisfiable core [2022-04-05 05:25:50,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:25:51,756 INFO L134 CoverageAnalysis]: Checked inductivity of 3630 backedges. 1425 proven. 465 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2022-04-05 05:25:51,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:25:52,204 INFO L134 CoverageAnalysis]: Checked inductivity of 3630 backedges. 1425 proven. 465 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2022-04-05 05:25:52,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099299541] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:25:52,204 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:25:52,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 65, 65] total 99 [2022-04-05 05:25:52,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915587492] [2022-04-05 05:25:52,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:25:52,205 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2022-04-05 05:25:52,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:25:52,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2022-04-05 05:25:52,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2151, Invalid=7551, Unknown=0, NotChecked=0, Total=9702 [2022-04-05 05:25:52,207 INFO L87 Difference]: Start difference. First operand 256 states and 257 transitions. Second operand has 99 states, 99 states have (on average 1.7171717171717171) internal successors, (170), 98 states have internal predecessors, (170), 63 states have call successors, (65), 3 states have call predecessors, (65), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2022-04-05 05:25:54,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:25:54,010 INFO L93 Difference]: Finished difference Result 358 states and 390 transitions. [2022-04-05 05:25:54,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-04-05 05:25:54,011 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 1.7171717171717171) internal successors, (170), 98 states have internal predecessors, (170), 63 states have call successors, (65), 3 states have call predecessors, (65), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) Word has length 253 [2022-04-05 05:25:54,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:25:54,012 INFO L225 Difference]: With dead ends: 358 [2022-04-05 05:25:54,012 INFO L226 Difference]: Without dead ends: 257 [2022-04-05 05:25:54,014 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 695 GetRequests, 534 SyntacticMatches, 1 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7179 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=4857, Invalid=21225, Unknown=0, NotChecked=0, Total=26082 [2022-04-05 05:25:54,014 INFO L913 BasicCegarLoop]: 42 mSDtfsCounter, 21 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 1659 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 1795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 1659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-05 05:25:54,014 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 114 Invalid, 1795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 1659 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-05 05:25:54,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2022-04-05 05:25:54,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 257. [2022-04-05 05:25:54,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 191 states have (on average 1.0104712041884816) internal successors, (193), 192 states have internal predecessors, (193), 33 states have call successors, (33), 33 states have call predecessors, (33), 32 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2022-04-05 05:25:54,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 258 transitions. [2022-04-05 05:25:54,050 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 258 transitions. Word has length 253 [2022-04-05 05:25:54,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:25:54,051 INFO L478 AbstractCegarLoop]: Abstraction has 257 states and 258 transitions. [2022-04-05 05:25:54,051 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 99 states have (on average 1.7171717171717171) internal successors, (170), 98 states have internal predecessors, (170), 63 states have call successors, (65), 3 states have call predecessors, (65), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2022-04-05 05:25:54,051 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 258 transitions. [2022-04-05 05:25:54,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2022-04-05 05:25:54,052 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:25:54,052 INFO L499 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:25:54,072 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2022-04-05 05:25:54,263 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:25:54,263 INFO L403 AbstractCegarLoop]: === Iteration 63 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:25:54,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:25:54,264 INFO L85 PathProgramCache]: Analyzing trace with hash -951062819, now seen corresponding path program 60 times [2022-04-05 05:25:54,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:25:54,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130409736] [2022-04-05 05:25:54,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:25:54,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:25:54,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:54,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:25:54,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:54,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-04-05 05:25:54,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:54,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-04-05 05:25:54,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:54,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-04-05 05:25:54,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:54,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-04-05 05:25:54,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:54,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-04-05 05:25:54,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:54,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-04-05 05:25:54,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:54,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-04-05 05:25:54,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:54,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-04-05 05:25:54,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:54,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-04-05 05:25:54,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:54,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-04-05 05:25:54,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:54,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-04-05 05:25:54,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:54,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-04-05 05:25:54,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:54,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-04-05 05:25:54,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:54,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-04-05 05:25:54,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:54,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-04-05 05:25:54,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:54,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-04-05 05:25:54,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:54,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-04-05 05:25:54,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:54,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-04-05 05:25:54,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:54,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-04-05 05:25:54,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:54,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-04-05 05:25:54,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:54,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-04-05 05:25:54,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:54,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-04-05 05:25:54,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:54,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-04-05 05:25:54,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:54,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-04-05 05:25:54,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:54,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-04-05 05:25:54,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:54,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-04-05 05:25:54,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:54,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-04-05 05:25:54,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:54,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-04-05 05:25:54,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:54,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-04-05 05:25:54,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:54,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-04-05 05:25:54,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:54,780 INFO L134 CoverageAnalysis]: Checked inductivity of 3661 backedges. 525 proven. 1396 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2022-04-05 05:25:54,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:25:54,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130409736] [2022-04-05 05:25:54,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130409736] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:25:54,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128626217] [2022-04-05 05:25:54,781 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-05 05:25:54,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:25:54,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:25:54,782 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:25:54,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-04-05 05:25:54,896 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2022-04-05 05:25:54,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:25:54,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 65 conjunts are in the unsatisfiable core [2022-04-05 05:25:54,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:25:55,263 INFO L134 CoverageAnalysis]: Checked inductivity of 3661 backedges. 556 proven. 1365 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2022-04-05 05:25:55,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:25:55,640 INFO L134 CoverageAnalysis]: Checked inductivity of 3661 backedges. 556 proven. 1365 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2022-04-05 05:25:55,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128626217] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:25:55,640 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:25:55,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 36, 36] total 40 [2022-04-05 05:25:55,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242067599] [2022-04-05 05:25:55,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:25:55,641 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-04-05 05:25:55,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:25:55,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-04-05 05:25:55,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=576, Invalid=984, Unknown=0, NotChecked=0, Total=1560 [2022-04-05 05:25:55,641 INFO L87 Difference]: Start difference. First operand 257 states and 258 transitions. Second operand has 40 states, 40 states have (on average 2.7) internal successors, (108), 37 states have internal predecessors, (108), 32 states have call successors, (35), 4 states have call predecessors, (35), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-04-05 05:25:56,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:25:56,462 INFO L93 Difference]: Finished difference Result 270 states and 272 transitions. [2022-04-05 05:25:56,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-04-05 05:25:56,462 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.7) internal successors, (108), 37 states have internal predecessors, (108), 32 states have call successors, (35), 4 states have call predecessors, (35), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Word has length 254 [2022-04-05 05:25:56,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:25:56,463 INFO L225 Difference]: With dead ends: 270 [2022-04-05 05:25:56,463 INFO L226 Difference]: Without dead ends: 268 [2022-04-05 05:25:56,464 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 672 GetRequests, 596 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1124 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1720, Invalid=3980, Unknown=0, NotChecked=0, Total=5700 [2022-04-05 05:25:56,465 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 96 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-05 05:25:56,465 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 50 Invalid, 852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 655 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-05 05:25:56,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2022-04-05 05:25:56,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 264. [2022-04-05 05:25:56,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 196 states have (on average 1.010204081632653) internal successors, (198), 197 states have internal predecessors, (198), 34 states have call successors, (34), 34 states have call predecessors, (34), 33 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2022-04-05 05:25:56,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 265 transitions. [2022-04-05 05:25:56,489 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 265 transitions. Word has length 254 [2022-04-05 05:25:56,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:25:56,490 INFO L478 AbstractCegarLoop]: Abstraction has 264 states and 265 transitions. [2022-04-05 05:25:56,490 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.7) internal successors, (108), 37 states have internal predecessors, (108), 32 states have call successors, (35), 4 states have call predecessors, (35), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-04-05 05:25:56,490 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 265 transitions. [2022-04-05 05:25:56,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-04-05 05:25:56,491 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:25:56,491 INFO L499 BasicCegarLoop]: trace histogram [32, 32, 32, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:25:56,517 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2022-04-05 05:25:56,713 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:25:56,714 INFO L403 AbstractCegarLoop]: === Iteration 64 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:25:56,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:25:56,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1030947939, now seen corresponding path program 61 times [2022-04-05 05:25:56,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:25:56,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141563557] [2022-04-05 05:25:56,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:25:56,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:25:56,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:57,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:25:57,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:57,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-04-05 05:25:57,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:57,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-04-05 05:25:57,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:57,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-04-05 05:25:57,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:57,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-04-05 05:25:57,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:57,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-04-05 05:25:57,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:57,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-04-05 05:25:57,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:57,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-04-05 05:25:57,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:57,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-04-05 05:25:57,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:57,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-04-05 05:25:57,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:57,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-04-05 05:25:57,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:57,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-04-05 05:25:57,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:57,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-04-05 05:25:57,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:57,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-04-05 05:25:57,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:57,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-04-05 05:25:57,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:57,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-04-05 05:25:57,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:57,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-04-05 05:25:57,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:57,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-04-05 05:25:57,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:57,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-04-05 05:25:57,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:57,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-04-05 05:25:57,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:57,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-04-05 05:25:57,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:57,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-04-05 05:25:57,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:57,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-04-05 05:25:57,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:57,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-04-05 05:25:57,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:57,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-04-05 05:25:57,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:57,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-04-05 05:25:57,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:57,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-04-05 05:25:57,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:57,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-04-05 05:25:57,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:57,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-04-05 05:25:57,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:57,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-04-05 05:25:57,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:57,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-04-05 05:25:57,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:57,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-04-05 05:25:57,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:57,946 INFO L134 CoverageAnalysis]: Checked inductivity of 3875 backedges. 1428 proven. 587 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2022-04-05 05:25:57,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:25:57,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141563557] [2022-04-05 05:25:57,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141563557] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:25:57,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846368738] [2022-04-05 05:25:57,947 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-05 05:25:57,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:25:57,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:25:57,952 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:25:57,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-04-05 05:25:58,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:58,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 66 conjunts are in the unsatisfiable core [2022-04-05 05:25:58,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:25:59,783 INFO L134 CoverageAnalysis]: Checked inductivity of 3875 backedges. 1519 proven. 496 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2022-04-05 05:25:59,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:26:00,224 INFO L134 CoverageAnalysis]: Checked inductivity of 3875 backedges. 1519 proven. 496 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2022-04-05 05:26:00,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846368738] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:26:00,224 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:26:00,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 67, 67] total 102 [2022-04-05 05:26:00,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625213055] [2022-04-05 05:26:00,225 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:26:00,225 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2022-04-05 05:26:00,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:26:00,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2022-04-05 05:26:00,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2284, Invalid=8018, Unknown=0, NotChecked=0, Total=10302 [2022-04-05 05:26:00,227 INFO L87 Difference]: Start difference. First operand 264 states and 265 transitions. Second operand has 102 states, 102 states have (on average 1.7156862745098038) internal successors, (175), 101 states have internal predecessors, (175), 65 states have call successors, (67), 3 states have call predecessors, (67), 1 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2022-04-05 05:26:01,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:26:02,000 INFO L93 Difference]: Finished difference Result 369 states and 402 transitions. [2022-04-05 05:26:02,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-04-05 05:26:02,000 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 1.7156862745098038) internal successors, (175), 101 states have internal predecessors, (175), 65 states have call successors, (67), 3 states have call predecessors, (67), 1 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) Word has length 261 [2022-04-05 05:26:02,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:26:02,001 INFO L225 Difference]: With dead ends: 369 [2022-04-05 05:26:02,001 INFO L226 Difference]: Without dead ends: 265 [2022-04-05 05:26:02,003 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 717 GetRequests, 551 SyntacticMatches, 1 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7635 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=5157, Invalid=22565, Unknown=0, NotChecked=0, Total=27722 [2022-04-05 05:26:02,003 INFO L913 BasicCegarLoop]: 43 mSDtfsCounter, 21 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1391 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 1533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 1391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-05 05:26:02,004 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 100 Invalid, 1533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 1391 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-05 05:26:02,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2022-04-05 05:26:02,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2022-04-05 05:26:02,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 197 states have (on average 1.0101522842639594) internal successors, (199), 198 states have internal predecessors, (199), 34 states have call successors, (34), 34 states have call predecessors, (34), 33 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2022-04-05 05:26:02,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 266 transitions. [2022-04-05 05:26:02,029 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 266 transitions. Word has length 261 [2022-04-05 05:26:02,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:26:02,030 INFO L478 AbstractCegarLoop]: Abstraction has 265 states and 266 transitions. [2022-04-05 05:26:02,030 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 102 states have (on average 1.7156862745098038) internal successors, (175), 101 states have internal predecessors, (175), 65 states have call successors, (67), 3 states have call predecessors, (67), 1 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2022-04-05 05:26:02,030 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 266 transitions. [2022-04-05 05:26:02,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2022-04-05 05:26:02,031 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:26:02,031 INFO L499 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:26:02,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2022-04-05 05:26:02,254 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:26:02,254 INFO L403 AbstractCegarLoop]: === Iteration 65 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:26:02,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:26:02,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1197379551, now seen corresponding path program 62 times [2022-04-05 05:26:02,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:26:02,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693900082] [2022-04-05 05:26:02,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:26:02,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:26:02,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:26:02,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-04-05 05:26:02,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-04-05 05:26:02,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-04-05 05:26:02,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-04-05 05:26:02,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-04-05 05:26:02,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-04-05 05:26:02,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-04-05 05:26:02,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-04-05 05:26:02,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-04-05 05:26:02,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-04-05 05:26:02,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-04-05 05:26:02,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-04-05 05:26:02,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-04-05 05:26:02,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-04-05 05:26:02,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-04-05 05:26:02,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-04-05 05:26:02,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-04-05 05:26:02,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-04-05 05:26:02,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-04-05 05:26:02,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-04-05 05:26:02,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-04-05 05:26:02,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-04-05 05:26:02,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-04-05 05:26:02,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-04-05 05:26:02,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-04-05 05:26:02,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-04-05 05:26:02,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-04-05 05:26:02,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-04-05 05:26:02,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-04-05 05:26:02,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-04-05 05:26:02,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-04-05 05:26:02,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,777 INFO L134 CoverageAnalysis]: Checked inductivity of 3907 backedges. 558 proven. 1489 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2022-04-05 05:26:02,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:26:02,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693900082] [2022-04-05 05:26:02,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693900082] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:26:02,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608208465] [2022-04-05 05:26:02,778 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 05:26:02,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:26:02,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:26:02,779 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:26:02,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-04-05 05:26:02,863 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 05:26:02,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:26:02,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 650 conjuncts, 67 conjunts are in the unsatisfiable core [2022-04-05 05:26:02,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:26:03,246 INFO L134 CoverageAnalysis]: Checked inductivity of 3907 backedges. 590 proven. 1457 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2022-04-05 05:26:03,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:26:03,631 INFO L134 CoverageAnalysis]: Checked inductivity of 3907 backedges. 590 proven. 1457 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2022-04-05 05:26:03,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608208465] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:26:03,631 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:26:03,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 37, 37] total 41 [2022-04-05 05:26:03,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569388284] [2022-04-05 05:26:03,631 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:26:03,632 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-04-05 05:26:03,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:26:03,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-04-05 05:26:03,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=610, Invalid=1030, Unknown=0, NotChecked=0, Total=1640 [2022-04-05 05:26:03,632 INFO L87 Difference]: Start difference. First operand 265 states and 266 transitions. Second operand has 41 states, 41 states have (on average 2.707317073170732) internal successors, (111), 38 states have internal predecessors, (111), 33 states have call successors, (36), 4 states have call predecessors, (36), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2022-04-05 05:26:04,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:26:04,330 INFO L93 Difference]: Finished difference Result 278 states and 280 transitions. [2022-04-05 05:26:04,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-04-05 05:26:04,330 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.707317073170732) internal successors, (111), 38 states have internal predecessors, (111), 33 states have call successors, (36), 4 states have call predecessors, (36), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Word has length 262 [2022-04-05 05:26:04,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:26:04,331 INFO L225 Difference]: With dead ends: 278 [2022-04-05 05:26:04,331 INFO L226 Difference]: Without dead ends: 276 [2022-04-05 05:26:04,332 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 693 GetRequests, 615 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1176 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1822, Invalid=4184, Unknown=0, NotChecked=0, Total=6006 [2022-04-05 05:26:04,332 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 99 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-05 05:26:04,332 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 55 Invalid, 807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-05 05:26:04,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2022-04-05 05:26:04,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 272. [2022-04-05 05:26:04,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 202 states have (on average 1.00990099009901) internal successors, (204), 203 states have internal predecessors, (204), 35 states have call successors, (35), 35 states have call predecessors, (35), 34 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2022-04-05 05:26:04,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 273 transitions. [2022-04-05 05:26:04,352 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 273 transitions. Word has length 262 [2022-04-05 05:26:04,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:26:04,352 INFO L478 AbstractCegarLoop]: Abstraction has 272 states and 273 transitions. [2022-04-05 05:26:04,352 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.707317073170732) internal successors, (111), 38 states have internal predecessors, (111), 33 states have call successors, (36), 4 states have call predecessors, (36), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2022-04-05 05:26:04,353 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 273 transitions. [2022-04-05 05:26:04,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2022-04-05 05:26:04,354 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:26:04,354 INFO L499 BasicCegarLoop]: trace histogram [33, 33, 33, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:26:04,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2022-04-05 05:26:04,572 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2022-04-05 05:26:04,572 INFO L403 AbstractCegarLoop]: === Iteration 66 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:26:04,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:26:04,573 INFO L85 PathProgramCache]: Analyzing trace with hash -209173031, now seen corresponding path program 63 times [2022-04-05 05:26:04,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:26:04,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149911644] [2022-04-05 05:26:04,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:26:04,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:26:04,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:05,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:26:05,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:05,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-04-05 05:26:05,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:05,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-04-05 05:26:05,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:05,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-04-05 05:26:05,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:05,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-04-05 05:26:05,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:05,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-04-05 05:26:05,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:05,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-04-05 05:26:05,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:05,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-04-05 05:26:05,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:05,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-04-05 05:26:05,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:05,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-04-05 05:26:05,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:05,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-04-05 05:26:05,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:05,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-04-05 05:26:05,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:05,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-04-05 05:26:05,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:05,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-04-05 05:26:05,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:05,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-04-05 05:26:05,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:05,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-04-05 05:26:05,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:05,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-04-05 05:26:05,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:05,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-04-05 05:26:05,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:05,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-04-05 05:26:05,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:05,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-04-05 05:26:05,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:05,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-04-05 05:26:05,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:05,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-04-05 05:26:05,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:05,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-04-05 05:26:05,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:05,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-04-05 05:26:05,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:05,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-04-05 05:26:05,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:05,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-04-05 05:26:05,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:05,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-04-05 05:26:05,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:05,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-04-05 05:26:05,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:05,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-04-05 05:26:05,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:05,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-04-05 05:26:05,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:05,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-04-05 05:26:05,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:05,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-04-05 05:26:05,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:05,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-04-05 05:26:05,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:05,807 INFO L134 CoverageAnalysis]: Checked inductivity of 4128 backedges. 1522 proven. 622 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2022-04-05 05:26:05,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:26:05,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149911644] [2022-04-05 05:26:05,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149911644] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:26:05,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591190498] [2022-04-05 05:26:05,807 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-05 05:26:05,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:26:05,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:26:05,808 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:26:05,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-04-05 05:26:05,927 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 33 check-sat command(s) [2022-04-05 05:26:05,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:26:05,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 664 conjuncts, 68 conjunts are in the unsatisfiable core [2022-04-05 05:26:05,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:26:07,763 INFO L134 CoverageAnalysis]: Checked inductivity of 4128 backedges. 1616 proven. 528 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2022-04-05 05:26:07,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:26:08,183 INFO L134 CoverageAnalysis]: Checked inductivity of 4128 backedges. 1616 proven. 528 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2022-04-05 05:26:08,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591190498] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:26:08,183 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:26:08,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 69, 69] total 105 [2022-04-05 05:26:08,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833941470] [2022-04-05 05:26:08,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:26:08,184 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2022-04-05 05:26:08,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:26:08,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2022-04-05 05:26:08,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2421, Invalid=8499, Unknown=0, NotChecked=0, Total=10920 [2022-04-05 05:26:08,186 INFO L87 Difference]: Start difference. First operand 272 states and 273 transitions. Second operand has 105 states, 105 states have (on average 1.7142857142857142) internal successors, (180), 104 states have internal predecessors, (180), 67 states have call successors, (69), 3 states have call predecessors, (69), 1 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2022-04-05 05:26:10,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:26:10,119 INFO L93 Difference]: Finished difference Result 380 states and 414 transitions. [2022-04-05 05:26:10,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-04-05 05:26:10,120 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 105 states have (on average 1.7142857142857142) internal successors, (180), 104 states have internal predecessors, (180), 67 states have call successors, (69), 3 states have call predecessors, (69), 1 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) Word has length 269 [2022-04-05 05:26:10,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:26:10,121 INFO L225 Difference]: With dead ends: 380 [2022-04-05 05:26:10,121 INFO L226 Difference]: Without dead ends: 273 [2022-04-05 05:26:10,122 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 739 GetRequests, 568 SyntacticMatches, 1 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8105 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=5466, Invalid=23946, Unknown=0, NotChecked=0, Total=29412 [2022-04-05 05:26:10,122 INFO L913 BasicCegarLoop]: 44 mSDtfsCounter, 21 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1602 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 1743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 1602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-05 05:26:10,123 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 111 Invalid, 1743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 1602 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-05 05:26:10,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2022-04-05 05:26:10,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2022-04-05 05:26:10,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 203 states have (on average 1.0098522167487685) internal successors, (205), 204 states have internal predecessors, (205), 35 states have call successors, (35), 35 states have call predecessors, (35), 34 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2022-04-05 05:26:10,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 274 transitions. [2022-04-05 05:26:10,146 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 274 transitions. Word has length 269 [2022-04-05 05:26:10,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:26:10,146 INFO L478 AbstractCegarLoop]: Abstraction has 273 states and 274 transitions. [2022-04-05 05:26:10,147 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 105 states have (on average 1.7142857142857142) internal successors, (180), 104 states have internal predecessors, (180), 67 states have call successors, (69), 3 states have call predecessors, (69), 1 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2022-04-05 05:26:10,147 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 274 transitions. [2022-04-05 05:26:10,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2022-04-05 05:26:10,148 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:26:10,149 INFO L499 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:26:10,177 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2022-04-05 05:26:10,365 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:26:10,365 INFO L403 AbstractCegarLoop]: === Iteration 67 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:26:10,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:26:10,366 INFO L85 PathProgramCache]: Analyzing trace with hash 187823709, now seen corresponding path program 64 times [2022-04-05 05:26:10,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:26:10,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735557108] [2022-04-05 05:26:10,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:26:10,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:26:10,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:10,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:26:10,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:10,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-04-05 05:26:10,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:10,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-04-05 05:26:10,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:10,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-04-05 05:26:10,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:10,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-04-05 05:26:10,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:10,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-04-05 05:26:10,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:10,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-04-05 05:26:10,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:10,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-04-05 05:26:10,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:10,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-04-05 05:26:10,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:10,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-04-05 05:26:10,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:10,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-04-05 05:26:10,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:10,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-04-05 05:26:10,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:10,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-04-05 05:26:10,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:10,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-04-05 05:26:10,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:10,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-04-05 05:26:10,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:10,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-04-05 05:26:10,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:10,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-04-05 05:26:10,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:10,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-04-05 05:26:10,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:11,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-04-05 05:26:11,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:11,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-04-05 05:26:11,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:11,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-04-05 05:26:11,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:11,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-04-05 05:26:11,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:11,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-04-05 05:26:11,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:11,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-04-05 05:26:11,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:11,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-04-05 05:26:11,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:11,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-04-05 05:26:11,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:11,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-04-05 05:26:11,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:11,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-04-05 05:26:11,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:11,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-04-05 05:26:11,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:11,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-04-05 05:26:11,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:11,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-04-05 05:26:11,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:11,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-04-05 05:26:11,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:11,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-04-05 05:26:11,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:11,022 INFO L134 CoverageAnalysis]: Checked inductivity of 4161 backedges. 592 proven. 1585 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2022-04-05 05:26:11,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:26:11,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735557108] [2022-04-05 05:26:11,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735557108] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:26:11,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631184884] [2022-04-05 05:26:11,023 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-05 05:26:11,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:26:11,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:26:11,024 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:26:11,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-04-05 05:26:11,159 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-05 05:26:11,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:26:11,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 669 conjuncts, 69 conjunts are in the unsatisfiable core [2022-04-05 05:26:11,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:26:11,695 INFO L134 CoverageAnalysis]: Checked inductivity of 4161 backedges. 625 proven. 1552 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2022-04-05 05:26:11,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:26:12,084 INFO L134 CoverageAnalysis]: Checked inductivity of 4161 backedges. 625 proven. 1552 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2022-04-05 05:26:12,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631184884] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:26:12,084 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:26:12,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 38, 38] total 42 [2022-04-05 05:26:12,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648745768] [2022-04-05 05:26:12,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:26:12,085 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-04-05 05:26:12,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:26:12,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-04-05 05:26:12,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=645, Invalid=1077, Unknown=0, NotChecked=0, Total=1722 [2022-04-05 05:26:12,086 INFO L87 Difference]: Start difference. First operand 273 states and 274 transitions. Second operand has 42 states, 42 states have (on average 2.7142857142857144) internal successors, (114), 39 states have internal predecessors, (114), 34 states have call successors, (37), 4 states have call predecessors, (37), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-04-05 05:26:12,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:26:12,824 INFO L93 Difference]: Finished difference Result 286 states and 288 transitions. [2022-04-05 05:26:12,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-04-05 05:26:12,824 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.7142857142857144) internal successors, (114), 39 states have internal predecessors, (114), 34 states have call successors, (37), 4 states have call predecessors, (37), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) Word has length 270 [2022-04-05 05:26:12,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:26:12,825 INFO L225 Difference]: With dead ends: 286 [2022-04-05 05:26:12,825 INFO L226 Difference]: Without dead ends: 284 [2022-04-05 05:26:12,826 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 714 GetRequests, 634 SyntacticMatches, 2 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1229 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1927, Invalid=4393, Unknown=0, NotChecked=0, Total=6320 [2022-04-05 05:26:12,826 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 97 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 705 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-05 05:26:12,826 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 50 Invalid, 914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 705 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-05 05:26:12,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-04-05 05:26:12,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 280. [2022-04-05 05:26:12,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 208 states have (on average 1.0096153846153846) internal successors, (210), 209 states have internal predecessors, (210), 36 states have call successors, (36), 36 states have call predecessors, (36), 35 states have return successors, (35), 34 states have call predecessors, (35), 35 states have call successors, (35) [2022-04-05 05:26:12,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 281 transitions. [2022-04-05 05:26:12,857 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 281 transitions. Word has length 270 [2022-04-05 05:26:12,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:26:12,858 INFO L478 AbstractCegarLoop]: Abstraction has 280 states and 281 transitions. [2022-04-05 05:26:12,858 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.7142857142857144) internal successors, (114), 39 states have internal predecessors, (114), 34 states have call successors, (37), 4 states have call predecessors, (37), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-04-05 05:26:12,858 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 281 transitions. [2022-04-05 05:26:12,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2022-04-05 05:26:12,859 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:26:12,860 INFO L499 BasicCegarLoop]: trace histogram [34, 34, 34, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:26:12,882 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2022-04-05 05:26:13,071 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2022-04-05 05:26:13,071 INFO L403 AbstractCegarLoop]: === Iteration 68 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:26:13,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:26:13,072 INFO L85 PathProgramCache]: Analyzing trace with hash -717519843, now seen corresponding path program 65 times [2022-04-05 05:26:13,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:26:13,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071083013] [2022-04-05 05:26:13,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:26:13,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:26:13,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:14,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:26:14,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:14,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-04-05 05:26:14,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:14,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-04-05 05:26:14,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:14,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-04-05 05:26:14,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:14,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-04-05 05:26:14,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:14,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-04-05 05:26:14,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:14,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-04-05 05:26:14,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:14,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-04-05 05:26:14,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:14,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-04-05 05:26:14,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:14,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-04-05 05:26:14,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:14,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-04-05 05:26:14,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:14,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-04-05 05:26:14,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:14,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-04-05 05:26:14,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:14,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-04-05 05:26:14,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:14,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-04-05 05:26:14,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:14,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-04-05 05:26:14,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:14,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-04-05 05:26:14,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:14,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-04-05 05:26:14,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:14,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-04-05 05:26:14,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:14,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-04-05 05:26:14,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:14,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-04-05 05:26:14,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:14,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-04-05 05:26:14,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:14,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-04-05 05:26:14,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:14,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-04-05 05:26:14,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:14,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-04-05 05:26:14,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:14,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-04-05 05:26:14,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:14,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-04-05 05:26:14,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:14,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-04-05 05:26:14,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:14,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-04-05 05:26:14,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:14,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-04-05 05:26:14,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:14,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-04-05 05:26:14,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:14,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-04-05 05:26:14,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:14,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-04-05 05:26:14,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:14,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-04-05 05:26:14,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:14,374 INFO L134 CoverageAnalysis]: Checked inductivity of 4389 backedges. 1619 proven. 658 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2022-04-05 05:26:14,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:26:14,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071083013] [2022-04-05 05:26:14,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071083013] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:26:14,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069491308] [2022-04-05 05:26:14,374 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-05 05:26:14,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:26:14,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:26:14,375 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:26:14,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-04-05 05:26:14,491 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2022-04-05 05:26:14,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:26:14,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 70 conjunts are in the unsatisfiable core [2022-04-05 05:26:14,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:26:16,425 INFO L134 CoverageAnalysis]: Checked inductivity of 4389 backedges. 1716 proven. 561 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2022-04-05 05:26:16,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:26:16,860 INFO L134 CoverageAnalysis]: Checked inductivity of 4389 backedges. 1716 proven. 561 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2022-04-05 05:26:16,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069491308] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:26:16,861 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:26:16,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 71, 71] total 108 [2022-04-05 05:26:16,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053011381] [2022-04-05 05:26:16,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:26:16,861 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2022-04-05 05:26:16,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:26:16,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2022-04-05 05:26:16,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2562, Invalid=8994, Unknown=0, NotChecked=0, Total=11556 [2022-04-05 05:26:16,863 INFO L87 Difference]: Start difference. First operand 280 states and 281 transitions. Second operand has 108 states, 108 states have (on average 1.712962962962963) internal successors, (185), 107 states have internal predecessors, (185), 69 states have call successors, (71), 3 states have call predecessors, (71), 1 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2022-04-05 05:26:18,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:26:18,766 INFO L93 Difference]: Finished difference Result 391 states and 426 transitions. [2022-04-05 05:26:18,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-04-05 05:26:18,766 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 108 states have (on average 1.712962962962963) internal successors, (185), 107 states have internal predecessors, (185), 69 states have call successors, (71), 3 states have call predecessors, (71), 1 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) Word has length 277 [2022-04-05 05:26:18,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:26:18,767 INFO L225 Difference]: With dead ends: 391 [2022-04-05 05:26:18,767 INFO L226 Difference]: Without dead ends: 281 [2022-04-05 05:26:18,768 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 761 GetRequests, 585 SyntacticMatches, 1 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8589 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=5784, Invalid=25368, Unknown=0, NotChecked=0, Total=31152 [2022-04-05 05:26:18,769 INFO L913 BasicCegarLoop]: 45 mSDtfsCounter, 21 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 1374 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 1520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 1374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-05 05:26:18,769 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 72 Invalid, 1520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 1374 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-05 05:26:18,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2022-04-05 05:26:18,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2022-04-05 05:26:18,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 209 states have (on average 1.0095693779904307) internal successors, (211), 210 states have internal predecessors, (211), 36 states have call successors, (36), 36 states have call predecessors, (36), 35 states have return successors, (35), 34 states have call predecessors, (35), 35 states have call successors, (35) [2022-04-05 05:26:18,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 282 transitions. [2022-04-05 05:26:18,797 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 282 transitions. Word has length 277 [2022-04-05 05:26:18,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:26:18,798 INFO L478 AbstractCegarLoop]: Abstraction has 281 states and 282 transitions. [2022-04-05 05:26:18,798 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 108 states have (on average 1.712962962962963) internal successors, (185), 107 states have internal predecessors, (185), 69 states have call successors, (71), 3 states have call predecessors, (71), 1 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2022-04-05 05:26:18,798 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 282 transitions. [2022-04-05 05:26:18,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2022-04-05 05:26:18,799 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:26:18,799 INFO L499 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:26:18,816 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2022-04-05 05:26:18,999 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2022-04-05 05:26:19,000 INFO L403 AbstractCegarLoop]: === Iteration 69 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:26:19,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:26:19,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1283559263, now seen corresponding path program 66 times [2022-04-05 05:26:19,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:26:19,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842811161] [2022-04-05 05:26:19,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:26:19,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:26:19,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:19,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:26:19,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:19,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-04-05 05:26:19,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:19,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-04-05 05:26:19,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:19,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-04-05 05:26:19,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:19,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-04-05 05:26:19,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:19,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-04-05 05:26:19,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:19,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-04-05 05:26:19,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:19,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-04-05 05:26:19,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:19,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-04-05 05:26:19,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:19,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-04-05 05:26:19,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:19,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-04-05 05:26:19,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:19,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-04-05 05:26:19,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:19,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-04-05 05:26:19,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:19,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-04-05 05:26:19,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:19,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-04-05 05:26:19,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:19,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-04-05 05:26:19,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:19,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-04-05 05:26:19,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:19,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-04-05 05:26:19,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:19,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-04-05 05:26:19,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:19,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-04-05 05:26:19,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:19,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-04-05 05:26:19,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:19,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-04-05 05:26:19,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:19,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-04-05 05:26:19,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:19,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-04-05 05:26:19,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:19,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-04-05 05:26:19,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:19,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-04-05 05:26:19,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:19,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-04-05 05:26:19,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:19,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-04-05 05:26:19,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:19,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-04-05 05:26:19,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:19,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-04-05 05:26:19,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:19,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-04-05 05:26:19,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:19,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-04-05 05:26:19,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:19,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-04-05 05:26:19,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:19,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-04-05 05:26:19,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:19,580 INFO L134 CoverageAnalysis]: Checked inductivity of 4423 backedges. 627 proven. 1684 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2022-04-05 05:26:19,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:26:19,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842811161] [2022-04-05 05:26:19,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842811161] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:26:19,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867363440] [2022-04-05 05:26:19,580 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-05 05:26:19,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:26:19,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:26:19,581 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:26:19,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-04-05 05:26:19,716 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) [2022-04-05 05:26:19,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:26:19,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 688 conjuncts, 71 conjunts are in the unsatisfiable core [2022-04-05 05:26:19,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:26:20,102 INFO L134 CoverageAnalysis]: Checked inductivity of 4423 backedges. 661 proven. 1650 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2022-04-05 05:26:20,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:26:20,500 INFO L134 CoverageAnalysis]: Checked inductivity of 4423 backedges. 661 proven. 1650 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2022-04-05 05:26:20,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867363440] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:26:20,501 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:26:20,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 39, 39] total 43 [2022-04-05 05:26:20,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886226426] [2022-04-05 05:26:20,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:26:20,501 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-04-05 05:26:20,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:26:20,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-04-05 05:26:20,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=681, Invalid=1125, Unknown=0, NotChecked=0, Total=1806 [2022-04-05 05:26:20,502 INFO L87 Difference]: Start difference. First operand 281 states and 282 transitions. Second operand has 43 states, 43 states have (on average 2.7209302325581395) internal successors, (117), 40 states have internal predecessors, (117), 35 states have call successors, (38), 4 states have call predecessors, (38), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-04-05 05:26:21,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:26:21,331 INFO L93 Difference]: Finished difference Result 294 states and 296 transitions. [2022-04-05 05:26:21,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-04-05 05:26:21,332 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.7209302325581395) internal successors, (117), 40 states have internal predecessors, (117), 35 states have call successors, (38), 4 states have call predecessors, (38), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Word has length 278 [2022-04-05 05:26:21,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:26:21,333 INFO L225 Difference]: With dead ends: 294 [2022-04-05 05:26:21,333 INFO L226 Difference]: Without dead ends: 292 [2022-04-05 05:26:21,333 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 735 GetRequests, 653 SyntacticMatches, 2 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1283 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=2035, Invalid=4607, Unknown=0, NotChecked=0, Total=6642 [2022-04-05 05:26:21,334 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 91 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 785 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-05 05:26:21,334 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 55 Invalid, 966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 785 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-05 05:26:21,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2022-04-05 05:26:21,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 288. [2022-04-05 05:26:21,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 214 states have (on average 1.0093457943925233) internal successors, (216), 215 states have internal predecessors, (216), 37 states have call successors, (37), 37 states have call predecessors, (37), 36 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2022-04-05 05:26:21,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 289 transitions. [2022-04-05 05:26:21,364 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 289 transitions. Word has length 278 [2022-04-05 05:26:21,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:26:21,365 INFO L478 AbstractCegarLoop]: Abstraction has 288 states and 289 transitions. [2022-04-05 05:26:21,365 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.7209302325581395) internal successors, (117), 40 states have internal predecessors, (117), 35 states have call successors, (38), 4 states have call predecessors, (38), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-04-05 05:26:21,365 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 289 transitions. [2022-04-05 05:26:21,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2022-04-05 05:26:21,366 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:26:21,366 INFO L499 BasicCegarLoop]: trace histogram [35, 35, 35, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:26:21,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2022-04-05 05:26:21,579 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2022-04-05 05:26:21,579 INFO L403 AbstractCegarLoop]: === Iteration 70 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:26:21,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:26:21,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1721873753, now seen corresponding path program 67 times [2022-04-05 05:26:21,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:26:21,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843426553] [2022-04-05 05:26:21,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:26:21,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:26:21,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:22,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:26:22,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:22,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-04-05 05:26:22,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:22,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-04-05 05:26:22,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:22,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-04-05 05:26:22,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:22,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-04-05 05:26:22,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:22,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-04-05 05:26:22,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:22,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-04-05 05:26:22,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:22,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-04-05 05:26:22,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:22,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-04-05 05:26:22,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:22,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-04-05 05:26:22,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:22,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-04-05 05:26:22,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:22,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-04-05 05:26:22,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:22,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-04-05 05:26:22,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:22,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-04-05 05:26:22,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:22,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-04-05 05:26:22,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:22,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-04-05 05:26:22,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:22,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-04-05 05:26:22,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:22,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-04-05 05:26:22,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:22,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-04-05 05:26:22,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:22,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-04-05 05:26:22,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:22,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-04-05 05:26:22,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:22,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-04-05 05:26:22,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:22,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-04-05 05:26:22,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:22,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-04-05 05:26:22,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:22,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-04-05 05:26:22,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:22,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-04-05 05:26:22,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:22,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-04-05 05:26:22,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:22,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-04-05 05:26:22,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:22,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-04-05 05:26:22,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:22,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-04-05 05:26:22,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:22,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-04-05 05:26:22,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:22,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-04-05 05:26:22,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:22,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-04-05 05:26:22,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:22,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-04-05 05:26:22,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:22,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-04-05 05:26:22,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:22,979 INFO L134 CoverageAnalysis]: Checked inductivity of 4658 backedges. 1719 proven. 695 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2022-04-05 05:26:22,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:26:22,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843426553] [2022-04-05 05:26:22,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843426553] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:26:22,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472323504] [2022-04-05 05:26:22,979 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-05 05:26:22,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:26:22,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:26:22,984 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:26:23,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-04-05 05:26:23,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:23,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 702 conjuncts, 72 conjunts are in the unsatisfiable core [2022-04-05 05:26:23,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:26:25,117 INFO L134 CoverageAnalysis]: Checked inductivity of 4658 backedges. 1819 proven. 595 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2022-04-05 05:26:25,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:26:25,560 INFO L134 CoverageAnalysis]: Checked inductivity of 4658 backedges. 1819 proven. 595 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2022-04-05 05:26:25,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472323504] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:26:25,561 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:26:25,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 73, 73] total 111 [2022-04-05 05:26:25,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116078953] [2022-04-05 05:26:25,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:26:25,561 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 111 states [2022-04-05 05:26:25,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:26:25,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2022-04-05 05:26:25,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2707, Invalid=9503, Unknown=0, NotChecked=0, Total=12210 [2022-04-05 05:26:25,563 INFO L87 Difference]: Start difference. First operand 288 states and 289 transitions. Second operand has 111 states, 111 states have (on average 1.7117117117117118) internal successors, (190), 110 states have internal predecessors, (190), 71 states have call successors, (73), 3 states have call predecessors, (73), 1 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2022-04-05 05:26:27,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:26:27,537 INFO L93 Difference]: Finished difference Result 402 states and 438 transitions. [2022-04-05 05:26:27,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-04-05 05:26:27,537 INFO L78 Accepts]: Start accepts. Automaton has has 111 states, 111 states have (on average 1.7117117117117118) internal successors, (190), 110 states have internal predecessors, (190), 71 states have call successors, (73), 3 states have call predecessors, (73), 1 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) Word has length 285 [2022-04-05 05:26:27,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:26:27,538 INFO L225 Difference]: With dead ends: 402 [2022-04-05 05:26:27,538 INFO L226 Difference]: Without dead ends: 289 [2022-04-05 05:26:27,541 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 783 GetRequests, 602 SyntacticMatches, 1 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9087 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=6111, Invalid=26831, Unknown=0, NotChecked=0, Total=32942 [2022-04-05 05:26:27,541 INFO L913 BasicCegarLoop]: 46 mSDtfsCounter, 21 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1272 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 1420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 1272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-05 05:26:27,541 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 98 Invalid, 1420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 1272 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-05 05:26:27,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2022-04-05 05:26:27,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2022-04-05 05:26:27,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 215 states have (on average 1.0093023255813953) internal successors, (217), 216 states have internal predecessors, (217), 37 states have call successors, (37), 37 states have call predecessors, (37), 36 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2022-04-05 05:26:27,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 290 transitions. [2022-04-05 05:26:27,574 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 290 transitions. Word has length 285 [2022-04-05 05:26:27,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:26:27,574 INFO L478 AbstractCegarLoop]: Abstraction has 289 states and 290 transitions. [2022-04-05 05:26:27,575 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 111 states, 111 states have (on average 1.7117117117117118) internal successors, (190), 110 states have internal predecessors, (190), 71 states have call successors, (73), 3 states have call predecessors, (73), 1 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2022-04-05 05:26:27,575 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 290 transitions. [2022-04-05 05:26:27,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2022-04-05 05:26:27,576 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:26:27,576 INFO L499 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:26:27,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2022-04-05 05:26:27,798 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2022-04-05 05:26:27,799 INFO L403 AbstractCegarLoop]: === Iteration 71 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:26:27,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:26:27,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1820450269, now seen corresponding path program 68 times [2022-04-05 05:26:27,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:26:27,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035196543] [2022-04-05 05:26:27,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:26:27,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:26:27,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:28,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:26:28,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:28,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-04-05 05:26:28,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:28,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-04-05 05:26:28,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:28,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-04-05 05:26:28,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:28,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-04-05 05:26:28,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:28,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-04-05 05:26:28,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:28,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-04-05 05:26:28,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:28,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-04-05 05:26:28,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:28,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-04-05 05:26:28,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:28,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-04-05 05:26:28,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:28,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-04-05 05:26:28,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:28,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-04-05 05:26:28,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:28,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-04-05 05:26:28,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:28,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-04-05 05:26:28,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:28,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-04-05 05:26:28,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:28,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-04-05 05:26:28,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:28,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-04-05 05:26:28,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:28,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-04-05 05:26:28,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:28,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-04-05 05:26:28,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:28,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-04-05 05:26:28,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:28,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-04-05 05:26:28,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:28,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-04-05 05:26:28,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:28,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-04-05 05:26:28,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:28,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-04-05 05:26:28,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:28,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-04-05 05:26:28,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:28,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-04-05 05:26:28,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:28,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-04-05 05:26:28,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:28,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-04-05 05:26:28,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:28,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-04-05 05:26:28,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:28,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-04-05 05:26:28,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:28,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-04-05 05:26:28,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:28,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-04-05 05:26:28,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:28,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-04-05 05:26:28,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:28,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-04-05 05:26:28,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:28,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-04-05 05:26:28,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:28,502 INFO L134 CoverageAnalysis]: Checked inductivity of 4693 backedges. 663 proven. 1786 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2022-04-05 05:26:28,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:26:28,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035196543] [2022-04-05 05:26:28,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035196543] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:26:28,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37112543] [2022-04-05 05:26:28,503 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 05:26:28,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:26:28,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:26:28,508 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:26:28,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-04-05 05:26:28,619 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 05:26:28,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:26:28,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 707 conjuncts, 73 conjunts are in the unsatisfiable core [2022-04-05 05:26:28,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:26:29,133 INFO L134 CoverageAnalysis]: Checked inductivity of 4693 backedges. 698 proven. 1751 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2022-04-05 05:26:29,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:26:29,546 INFO L134 CoverageAnalysis]: Checked inductivity of 4693 backedges. 698 proven. 1751 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2022-04-05 05:26:29,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37112543] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:26:29,547 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:26:29,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 40, 40] total 44 [2022-04-05 05:26:29,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787807818] [2022-04-05 05:26:29,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:26:29,547 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-04-05 05:26:29,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:26:29,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-04-05 05:26:29,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=718, Invalid=1174, Unknown=0, NotChecked=0, Total=1892 [2022-04-05 05:26:29,548 INFO L87 Difference]: Start difference. First operand 289 states and 290 transitions. Second operand has 44 states, 44 states have (on average 2.727272727272727) internal successors, (120), 41 states have internal predecessors, (120), 36 states have call successors, (39), 4 states have call predecessors, (39), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-04-05 05:26:30,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:26:30,311 INFO L93 Difference]: Finished difference Result 302 states and 304 transitions. [2022-04-05 05:26:30,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-04-05 05:26:30,311 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.727272727272727) internal successors, (120), 41 states have internal predecessors, (120), 36 states have call successors, (39), 4 states have call predecessors, (39), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Word has length 286 [2022-04-05 05:26:30,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:26:30,312 INFO L225 Difference]: With dead ends: 302 [2022-04-05 05:26:30,312 INFO L226 Difference]: Without dead ends: 300 [2022-04-05 05:26:30,313 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 756 GetRequests, 672 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1338 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2146, Invalid=4826, Unknown=0, NotChecked=0, Total=6972 [2022-04-05 05:26:30,313 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 105 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-05 05:26:30,314 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 40 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-05 05:26:30,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-04-05 05:26:30,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 296. [2022-04-05 05:26:30,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 220 states have (on average 1.009090909090909) internal successors, (222), 221 states have internal predecessors, (222), 38 states have call successors, (38), 38 states have call predecessors, (38), 37 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) [2022-04-05 05:26:30,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 297 transitions. [2022-04-05 05:26:30,347 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 297 transitions. Word has length 286 [2022-04-05 05:26:30,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:26:30,348 INFO L478 AbstractCegarLoop]: Abstraction has 296 states and 297 transitions. [2022-04-05 05:26:30,348 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.727272727272727) internal successors, (120), 41 states have internal predecessors, (120), 36 states have call successors, (39), 4 states have call predecessors, (39), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-04-05 05:26:30,348 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 297 transitions. [2022-04-05 05:26:30,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2022-04-05 05:26:30,349 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:26:30,349 INFO L499 BasicCegarLoop]: trace histogram [36, 36, 36, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:26:30,375 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2022-04-05 05:26:30,569 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:26:30,569 INFO L403 AbstractCegarLoop]: === Iteration 72 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:26:30,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:26:30,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1293954205, now seen corresponding path program 69 times [2022-04-05 05:26:30,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:26:30,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936561871] [2022-04-05 05:26:30,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:26:30,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:26:30,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:31,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:26:31,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:31,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-04-05 05:26:31,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:31,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-04-05 05:26:31,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:31,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-04-05 05:26:31,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:31,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-04-05 05:26:31,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:31,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-04-05 05:26:31,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:31,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-04-05 05:26:31,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:31,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-04-05 05:26:31,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:31,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-04-05 05:26:31,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:31,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-04-05 05:26:31,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:31,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-04-05 05:26:31,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:31,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-04-05 05:26:31,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:31,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-04-05 05:26:31,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:31,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-04-05 05:26:31,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:31,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-04-05 05:26:31,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:31,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-04-05 05:26:31,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:31,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-04-05 05:26:31,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:31,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-04-05 05:26:31,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:31,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-04-05 05:26:31,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:31,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-04-05 05:26:31,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:31,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-04-05 05:26:31,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:31,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-04-05 05:26:31,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:31,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-04-05 05:26:31,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:31,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-04-05 05:26:31,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:31,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-04-05 05:26:31,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:31,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-04-05 05:26:31,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:31,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-04-05 05:26:31,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:31,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-04-05 05:26:31,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:31,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-04-05 05:26:31,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:31,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-04-05 05:26:31,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:32,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-04-05 05:26:32,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:32,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-04-05 05:26:32,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:32,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-04-05 05:26:32,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:32,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-04-05 05:26:32,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:32,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-04-05 05:26:32,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:32,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-04-05 05:26:32,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:32,011 INFO L134 CoverageAnalysis]: Checked inductivity of 4935 backedges. 1822 proven. 733 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2022-04-05 05:26:32,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:26:32,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936561871] [2022-04-05 05:26:32,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936561871] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:26:32,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165120878] [2022-04-05 05:26:32,011 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-05 05:26:32,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:26:32,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:26:32,012 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:26:32,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-04-05 05:26:32,148 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 36 check-sat command(s) [2022-04-05 05:26:32,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:26:32,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 721 conjuncts, 74 conjunts are in the unsatisfiable core [2022-04-05 05:26:32,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:26:34,244 INFO L134 CoverageAnalysis]: Checked inductivity of 4935 backedges. 1925 proven. 630 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2022-04-05 05:26:34,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:26:34,737 INFO L134 CoverageAnalysis]: Checked inductivity of 4935 backedges. 1925 proven. 630 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2022-04-05 05:26:34,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165120878] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:26:34,737 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:26:34,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 75, 75] total 114 [2022-04-05 05:26:34,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081515469] [2022-04-05 05:26:34,738 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:26:34,738 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 114 states [2022-04-05 05:26:34,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:26:34,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2022-04-05 05:26:34,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2856, Invalid=10026, Unknown=0, NotChecked=0, Total=12882 [2022-04-05 05:26:34,740 INFO L87 Difference]: Start difference. First operand 296 states and 297 transitions. Second operand has 114 states, 114 states have (on average 1.7105263157894737) internal successors, (195), 113 states have internal predecessors, (195), 73 states have call successors, (75), 3 states have call predecessors, (75), 1 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2022-04-05 05:26:36,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:26:36,814 INFO L93 Difference]: Finished difference Result 413 states and 450 transitions. [2022-04-05 05:26:36,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-04-05 05:26:36,819 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 114 states have (on average 1.7105263157894737) internal successors, (195), 113 states have internal predecessors, (195), 73 states have call successors, (75), 3 states have call predecessors, (75), 1 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) Word has length 293 [2022-04-05 05:26:36,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:26:36,820 INFO L225 Difference]: With dead ends: 413 [2022-04-05 05:26:36,821 INFO L226 Difference]: Without dead ends: 297 [2022-04-05 05:26:36,824 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 805 GetRequests, 619 SyntacticMatches, 1 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9599 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=6447, Invalid=28335, Unknown=0, NotChecked=0, Total=34782 [2022-04-05 05:26:36,824 INFO L913 BasicCegarLoop]: 47 mSDtfsCounter, 21 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1294 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 1450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 1294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-05 05:26:36,824 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 99 Invalid, 1450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 1294 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-05 05:26:36,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2022-04-05 05:26:36,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2022-04-05 05:26:36,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 221 states have (on average 1.009049773755656) internal successors, (223), 222 states have internal predecessors, (223), 38 states have call successors, (38), 38 states have call predecessors, (38), 37 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) [2022-04-05 05:26:36,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 298 transitions. [2022-04-05 05:26:36,869 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 298 transitions. Word has length 293 [2022-04-05 05:26:36,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:26:36,869 INFO L478 AbstractCegarLoop]: Abstraction has 297 states and 298 transitions. [2022-04-05 05:26:36,869 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 114 states, 114 states have (on average 1.7105263157894737) internal successors, (195), 113 states have internal predecessors, (195), 73 states have call successors, (75), 3 states have call predecessors, (75), 1 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2022-04-05 05:26:36,869 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 298 transitions. [2022-04-05 05:26:36,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2022-04-05 05:26:36,871 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:26:36,871 INFO L499 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:26:36,894 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2022-04-05 05:26:37,087 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:26:37,087 INFO L403 AbstractCegarLoop]: === Iteration 73 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:26:37,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:26:37,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1751019231, now seen corresponding path program 70 times [2022-04-05 05:26:37,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:26:37,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494898507] [2022-04-05 05:26:37,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:26:37,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:26:37,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:37,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:26:37,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:37,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-04-05 05:26:37,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:37,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-04-05 05:26:37,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:37,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-04-05 05:26:37,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:37,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-04-05 05:26:37,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:37,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-04-05 05:26:37,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:37,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-04-05 05:26:37,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:37,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-04-05 05:26:37,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:37,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-04-05 05:26:37,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:37,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-04-05 05:26:37,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:37,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-04-05 05:26:37,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:37,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-04-05 05:26:37,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:37,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-04-05 05:26:37,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:37,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-04-05 05:26:37,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:37,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-04-05 05:26:37,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:37,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-04-05 05:26:37,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:37,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-04-05 05:26:37,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:37,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-04-05 05:26:37,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:37,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-04-05 05:26:37,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:37,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-04-05 05:26:37,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:37,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-04-05 05:26:37,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:37,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-04-05 05:26:37,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:37,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-04-05 05:26:37,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:37,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-04-05 05:26:37,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:37,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-04-05 05:26:37,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:37,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-04-05 05:26:37,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:37,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-04-05 05:26:37,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:37,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-04-05 05:26:37,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:37,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-04-05 05:26:37,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:37,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-04-05 05:26:37,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:37,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-04-05 05:26:37,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:37,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-04-05 05:26:37,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:37,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-04-05 05:26:37,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:37,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-04-05 05:26:37,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:37,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-04-05 05:26:37,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:37,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-04-05 05:26:37,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:37,712 INFO L134 CoverageAnalysis]: Checked inductivity of 4971 backedges. 700 proven. 1891 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2022-04-05 05:26:37,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:26:37,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494898507] [2022-04-05 05:26:37,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494898507] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:26:37,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652583318] [2022-04-05 05:26:37,712 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-05 05:26:37,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:26:37,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:26:37,713 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:26:37,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-04-05 05:26:37,812 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-05 05:26:37,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:26:37,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 726 conjuncts, 75 conjunts are in the unsatisfiable core [2022-04-05 05:26:37,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:26:38,239 INFO L134 CoverageAnalysis]: Checked inductivity of 4971 backedges. 736 proven. 1855 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2022-04-05 05:26:38,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:26:38,659 INFO L134 CoverageAnalysis]: Checked inductivity of 4971 backedges. 736 proven. 1855 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2022-04-05 05:26:38,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652583318] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:26:38,660 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:26:38,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 41, 41] total 45 [2022-04-05 05:26:38,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68467803] [2022-04-05 05:26:38,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:26:38,660 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-04-05 05:26:38,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:26:38,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-04-05 05:26:38,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=756, Invalid=1224, Unknown=0, NotChecked=0, Total=1980 [2022-04-05 05:26:38,661 INFO L87 Difference]: Start difference. First operand 297 states and 298 transitions. Second operand has 45 states, 45 states have (on average 2.7333333333333334) internal successors, (123), 42 states have internal predecessors, (123), 37 states have call successors, (40), 4 states have call predecessors, (40), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2022-04-05 05:26:39,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:26:39,470 INFO L93 Difference]: Finished difference Result 310 states and 312 transitions. [2022-04-05 05:26:39,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-04-05 05:26:39,470 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.7333333333333334) internal successors, (123), 42 states have internal predecessors, (123), 37 states have call successors, (40), 4 states have call predecessors, (40), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Word has length 294 [2022-04-05 05:26:39,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:26:39,471 INFO L225 Difference]: With dead ends: 310 [2022-04-05 05:26:39,472 INFO L226 Difference]: Without dead ends: 308 [2022-04-05 05:26:39,472 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 777 GetRequests, 691 SyntacticMatches, 2 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1394 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=2260, Invalid=5050, Unknown=0, NotChecked=0, Total=7310 [2022-04-05 05:26:39,472 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 103 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 809 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 1000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-05 05:26:39,472 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 65 Invalid, 1000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 809 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-05 05:26:39,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-04-05 05:26:39,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 304. [2022-04-05 05:26:39,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 226 states have (on average 1.008849557522124) internal successors, (228), 227 states have internal predecessors, (228), 39 states have call successors, (39), 39 states have call predecessors, (39), 38 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2022-04-05 05:26:39,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 305 transitions. [2022-04-05 05:26:39,495 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 305 transitions. Word has length 294 [2022-04-05 05:26:39,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:26:39,495 INFO L478 AbstractCegarLoop]: Abstraction has 304 states and 305 transitions. [2022-04-05 05:26:39,495 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.7333333333333334) internal successors, (123), 42 states have internal predecessors, (123), 37 states have call successors, (40), 4 states have call predecessors, (40), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2022-04-05 05:26:39,495 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 305 transitions. [2022-04-05 05:26:39,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2022-04-05 05:26:39,497 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:26:39,497 INFO L499 BasicCegarLoop]: trace histogram [37, 37, 37, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:26:39,521 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2022-04-05 05:26:39,715 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:26:39,715 INFO L403 AbstractCegarLoop]: === Iteration 74 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:26:39,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:26:39,716 INFO L85 PathProgramCache]: Analyzing trace with hash 995165401, now seen corresponding path program 71 times [2022-04-05 05:26:39,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:26:39,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099686589] [2022-04-05 05:26:39,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:26:39,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:26:39,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:26:41,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-04-05 05:26:41,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-04-05 05:26:41,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-04-05 05:26:41,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-04-05 05:26:41,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-04-05 05:26:41,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-04-05 05:26:41,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-04-05 05:26:41,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-04-05 05:26:41,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-04-05 05:26:41,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-04-05 05:26:41,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-04-05 05:26:41,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-04-05 05:26:41,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-04-05 05:26:41,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-04-05 05:26:41,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-04-05 05:26:41,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-04-05 05:26:41,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-04-05 05:26:41,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-04-05 05:26:41,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-04-05 05:26:41,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-04-05 05:26:41,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-04-05 05:26:41,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-04-05 05:26:41,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-04-05 05:26:41,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-04-05 05:26:41,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-04-05 05:26:41,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-04-05 05:26:41,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-04-05 05:26:41,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-04-05 05:26:41,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-04-05 05:26:41,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-04-05 05:26:41,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-04-05 05:26:41,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-04-05 05:26:41,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-04-05 05:26:41,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-04-05 05:26:41,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-04-05 05:26:41,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-04-05 05:26:41,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,301 INFO L134 CoverageAnalysis]: Checked inductivity of 5220 backedges. 1928 proven. 772 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2022-04-05 05:26:41,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:26:41,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099686589] [2022-04-05 05:26:41,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099686589] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:26:41,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142698345] [2022-04-05 05:26:41,302 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-05 05:26:41,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:26:41,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:26:41,303 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:26:41,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-04-05 05:26:41,444 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2022-04-05 05:26:41,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:26:41,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 740 conjuncts, 76 conjunts are in the unsatisfiable core [2022-04-05 05:26:41,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:26:43,648 INFO L134 CoverageAnalysis]: Checked inductivity of 5220 backedges. 2034 proven. 666 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2022-04-05 05:26:43,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:26:44,121 INFO L134 CoverageAnalysis]: Checked inductivity of 5220 backedges. 2034 proven. 666 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2022-04-05 05:26:44,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142698345] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:26:44,122 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:26:44,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 77, 77] total 117 [2022-04-05 05:26:44,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415472782] [2022-04-05 05:26:44,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:26:44,123 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 117 states [2022-04-05 05:26:44,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:26:44,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2022-04-05 05:26:44,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3009, Invalid=10563, Unknown=0, NotChecked=0, Total=13572 [2022-04-05 05:26:44,126 INFO L87 Difference]: Start difference. First operand 304 states and 305 transitions. Second operand has 117 states, 117 states have (on average 1.7094017094017093) internal successors, (200), 116 states have internal predecessors, (200), 75 states have call successors, (77), 3 states have call predecessors, (77), 1 states have return successors, (74), 74 states have call predecessors, (74), 74 states have call successors, (74) [2022-04-05 05:26:46,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:26:46,329 INFO L93 Difference]: Finished difference Result 424 states and 462 transitions. [2022-04-05 05:26:46,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-04-05 05:26:46,330 INFO L78 Accepts]: Start accepts. Automaton has has 117 states, 117 states have (on average 1.7094017094017093) internal successors, (200), 116 states have internal predecessors, (200), 75 states have call successors, (77), 3 states have call predecessors, (77), 1 states have return successors, (74), 74 states have call predecessors, (74), 74 states have call successors, (74) Word has length 301 [2022-04-05 05:26:46,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:26:46,331 INFO L225 Difference]: With dead ends: 424 [2022-04-05 05:26:46,331 INFO L226 Difference]: Without dead ends: 305 [2022-04-05 05:26:46,333 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 827 GetRequests, 636 SyntacticMatches, 1 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10125 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=6792, Invalid=29880, Unknown=0, NotChecked=0, Total=36672 [2022-04-05 05:26:46,333 INFO L913 BasicCegarLoop]: 48 mSDtfsCounter, 21 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1554 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 1715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 1554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-05 05:26:46,333 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 85 Invalid, 1715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 1554 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-05 05:26:46,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2022-04-05 05:26:46,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2022-04-05 05:26:46,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 227 states have (on average 1.0088105726872247) internal successors, (229), 228 states have internal predecessors, (229), 39 states have call successors, (39), 39 states have call predecessors, (39), 38 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2022-04-05 05:26:46,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 306 transitions. [2022-04-05 05:26:46,361 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 306 transitions. Word has length 301 [2022-04-05 05:26:46,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:26:46,361 INFO L478 AbstractCegarLoop]: Abstraction has 305 states and 306 transitions. [2022-04-05 05:26:46,361 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 117 states, 117 states have (on average 1.7094017094017093) internal successors, (200), 116 states have internal predecessors, (200), 75 states have call successors, (77), 3 states have call predecessors, (77), 1 states have return successors, (74), 74 states have call predecessors, (74), 74 states have call successors, (74) [2022-04-05 05:26:46,362 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 306 transitions. [2022-04-05 05:26:46,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2022-04-05 05:26:46,363 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:26:46,363 INFO L499 BasicCegarLoop]: trace histogram [37, 37, 37, 37, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:26:46,384 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2022-04-05 05:26:46,575 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable73 [2022-04-05 05:26:46,575 INFO L403 AbstractCegarLoop]: === Iteration 75 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:26:46,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:26:46,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1552439971, now seen corresponding path program 72 times [2022-04-05 05:26:46,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:26:46,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217367267] [2022-04-05 05:26:46,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:26:46,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:26:46,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:47,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:26:47,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:47,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-04-05 05:26:47,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:47,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-04-05 05:26:47,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:47,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-04-05 05:26:47,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:47,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-04-05 05:26:47,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:47,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-04-05 05:26:47,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:47,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-04-05 05:26:47,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:47,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-04-05 05:26:47,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:47,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-04-05 05:26:47,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:47,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-04-05 05:26:47,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:47,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-04-05 05:26:47,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:47,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-04-05 05:26:47,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:47,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-04-05 05:26:47,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:47,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-04-05 05:26:47,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:47,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-04-05 05:26:47,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:47,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-04-05 05:26:47,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:47,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-04-05 05:26:47,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:47,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-04-05 05:26:47,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:47,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-04-05 05:26:47,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:47,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-04-05 05:26:47,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:47,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-04-05 05:26:47,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:47,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-04-05 05:26:47,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:47,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-04-05 05:26:47,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:47,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-04-05 05:26:47,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:47,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-04-05 05:26:47,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:47,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-04-05 05:26:47,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:47,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-04-05 05:26:47,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:47,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-04-05 05:26:47,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:47,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-04-05 05:26:47,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:47,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-04-05 05:26:47,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:47,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-04-05 05:26:47,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:47,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-04-05 05:26:47,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:47,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-04-05 05:26:47,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:47,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-04-05 05:26:47,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:47,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-04-05 05:26:47,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:47,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-04-05 05:26:47,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:47,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-04-05 05:26:47,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:47,259 INFO L134 CoverageAnalysis]: Checked inductivity of 5257 backedges. 738 proven. 1999 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2022-04-05 05:26:47,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:26:47,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217367267] [2022-04-05 05:26:47,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217367267] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:26:47,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425646890] [2022-04-05 05:26:47,259 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-05 05:26:47,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:26:47,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:26:47,260 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:26:47,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-04-05 05:26:47,394 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2022-04-05 05:26:47,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:26:47,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 745 conjuncts, 77 conjunts are in the unsatisfiable core [2022-04-05 05:26:47,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:26:47,809 INFO L134 CoverageAnalysis]: Checked inductivity of 5257 backedges. 775 proven. 1962 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2022-04-05 05:26:47,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:26:48,246 INFO L134 CoverageAnalysis]: Checked inductivity of 5257 backedges. 775 proven. 1962 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2022-04-05 05:26:48,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425646890] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:26:48,246 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:26:48,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 42, 42] total 46 [2022-04-05 05:26:48,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616378043] [2022-04-05 05:26:48,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:26:48,247 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-04-05 05:26:48,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:26:48,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-04-05 05:26:48,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=795, Invalid=1275, Unknown=0, NotChecked=0, Total=2070 [2022-04-05 05:26:48,248 INFO L87 Difference]: Start difference. First operand 305 states and 306 transitions. Second operand has 46 states, 46 states have (on average 2.739130434782609) internal successors, (126), 43 states have internal predecessors, (126), 38 states have call successors, (41), 4 states have call predecessors, (41), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-04-05 05:26:49,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:26:49,047 INFO L93 Difference]: Finished difference Result 318 states and 320 transitions. [2022-04-05 05:26:49,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-04-05 05:26:49,048 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.739130434782609) internal successors, (126), 43 states have internal predecessors, (126), 38 states have call successors, (41), 4 states have call predecessors, (41), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Word has length 302 [2022-04-05 05:26:49,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:26:49,049 INFO L225 Difference]: With dead ends: 318 [2022-04-05 05:26:49,049 INFO L226 Difference]: Without dead ends: 316 [2022-04-05 05:26:49,050 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 798 GetRequests, 710 SyntacticMatches, 2 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1451 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2377, Invalid=5279, Unknown=0, NotChecked=0, Total=7656 [2022-04-05 05:26:49,050 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 115 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-05 05:26:49,050 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 55 Invalid, 930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 734 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-05 05:26:49,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2022-04-05 05:26:49,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 312. [2022-04-05 05:26:49,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 232 states have (on average 1.0086206896551724) internal successors, (234), 233 states have internal predecessors, (234), 40 states have call successors, (40), 40 states have call predecessors, (40), 39 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2022-04-05 05:26:49,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 313 transitions. [2022-04-05 05:26:49,097 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 313 transitions. Word has length 302 [2022-04-05 05:26:49,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:26:49,098 INFO L478 AbstractCegarLoop]: Abstraction has 312 states and 313 transitions. [2022-04-05 05:26:49,098 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.739130434782609) internal successors, (126), 43 states have internal predecessors, (126), 38 states have call successors, (41), 4 states have call predecessors, (41), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-04-05 05:26:49,098 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 313 transitions. [2022-04-05 05:26:49,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2022-04-05 05:26:49,099 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:26:49,099 INFO L499 BasicCegarLoop]: trace histogram [38, 38, 38, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:26:49,116 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2022-04-05 05:26:49,299 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:26:49,300 INFO L403 AbstractCegarLoop]: === Iteration 76 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:26:49,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:26:49,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1124267293, now seen corresponding path program 73 times [2022-04-05 05:26:49,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:26:49,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721846748] [2022-04-05 05:26:49,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:26:49,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:26:49,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:50,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:26:50,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:50,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-04-05 05:26:50,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:50,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-04-05 05:26:50,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:50,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-04-05 05:26:50,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:50,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-04-05 05:26:50,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:50,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-04-05 05:26:50,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:50,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-04-05 05:26:50,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:50,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-04-05 05:26:50,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:50,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-04-05 05:26:50,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:50,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-04-05 05:26:50,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:50,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-04-05 05:26:50,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:50,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-04-05 05:26:50,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:50,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-04-05 05:26:50,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:50,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-04-05 05:26:50,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:50,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-04-05 05:26:50,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:50,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-04-05 05:26:50,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:50,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-04-05 05:26:50,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:50,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-04-05 05:26:50,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:50,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-04-05 05:26:50,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:50,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-04-05 05:26:50,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:50,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-04-05 05:26:50,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:50,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-04-05 05:26:50,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:50,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-04-05 05:26:50,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:50,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-04-05 05:26:50,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:50,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-04-05 05:26:50,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:50,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-04-05 05:26:50,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:50,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-04-05 05:26:50,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:50,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-04-05 05:26:50,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:50,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-04-05 05:26:50,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:50,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-04-05 05:26:50,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:50,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-04-05 05:26:50,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:50,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-04-05 05:26:50,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:50,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-04-05 05:26:50,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:50,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-04-05 05:26:50,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:50,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-04-05 05:26:50,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:50,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-04-05 05:26:50,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:50,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-04-05 05:26:50,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:50,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-04-05 05:26:50,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:50,894 INFO L134 CoverageAnalysis]: Checked inductivity of 5513 backedges. 2037 proven. 812 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2022-04-05 05:26:50,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:26:50,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721846748] [2022-04-05 05:26:50,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721846748] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:26:50,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250470568] [2022-04-05 05:26:50,895 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-05 05:26:50,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:26:50,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:26:50,899 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:26:50,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-04-05 05:26:51,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:51,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 759 conjuncts, 78 conjunts are in the unsatisfiable core [2022-04-05 05:26:51,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:26:53,373 INFO L134 CoverageAnalysis]: Checked inductivity of 5513 backedges. 2146 proven. 703 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2022-04-05 05:26:53,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:26:53,860 INFO L134 CoverageAnalysis]: Checked inductivity of 5513 backedges. 2146 proven. 703 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2022-04-05 05:26:53,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250470568] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:26:53,861 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:26:53,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 79, 79] total 120 [2022-04-05 05:26:53,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271439021] [2022-04-05 05:26:53,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:26:53,861 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 120 states [2022-04-05 05:26:53,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:26:53,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2022-04-05 05:26:53,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3166, Invalid=11114, Unknown=0, NotChecked=0, Total=14280 [2022-04-05 05:26:53,863 INFO L87 Difference]: Start difference. First operand 312 states and 313 transitions. Second operand has 120 states, 120 states have (on average 1.7083333333333333) internal successors, (205), 119 states have internal predecessors, (205), 77 states have call successors, (79), 3 states have call predecessors, (79), 1 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2022-04-05 05:26:56,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:26:56,271 INFO L93 Difference]: Finished difference Result 435 states and 474 transitions. [2022-04-05 05:26:56,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-04-05 05:26:56,272 INFO L78 Accepts]: Start accepts. Automaton has has 120 states, 120 states have (on average 1.7083333333333333) internal successors, (205), 119 states have internal predecessors, (205), 77 states have call successors, (79), 3 states have call predecessors, (79), 1 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) Word has length 309 [2022-04-05 05:26:56,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:26:56,273 INFO L225 Difference]: With dead ends: 435 [2022-04-05 05:26:56,273 INFO L226 Difference]: Without dead ends: 313 [2022-04-05 05:26:56,277 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 849 GetRequests, 653 SyntacticMatches, 1 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10665 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=7146, Invalid=31466, Unknown=0, NotChecked=0, Total=38612 [2022-04-05 05:26:56,277 INFO L913 BasicCegarLoop]: 49 mSDtfsCounter, 21 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1999 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 2160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 1999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-05 05:26:56,277 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 96 Invalid, 2160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 1999 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-05 05:26:56,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2022-04-05 05:26:56,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2022-04-05 05:26:56,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 233 states have (on average 1.0085836909871244) internal successors, (235), 234 states have internal predecessors, (235), 40 states have call successors, (40), 40 states have call predecessors, (40), 39 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2022-04-05 05:26:56,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 314 transitions. [2022-04-05 05:26:56,325 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 314 transitions. Word has length 309 [2022-04-05 05:26:56,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:26:56,326 INFO L478 AbstractCegarLoop]: Abstraction has 313 states and 314 transitions. [2022-04-05 05:26:56,326 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 120 states, 120 states have (on average 1.7083333333333333) internal successors, (205), 119 states have internal predecessors, (205), 77 states have call successors, (79), 3 states have call predecessors, (79), 1 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2022-04-05 05:26:56,326 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 314 transitions. [2022-04-05 05:26:56,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-04-05 05:26:56,327 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:26:56,327 INFO L499 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:26:56,344 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2022-04-05 05:26:56,527 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:26:56,528 INFO L403 AbstractCegarLoop]: === Iteration 77 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:26:56,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:26:56,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1574097313, now seen corresponding path program 74 times [2022-04-05 05:26:56,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:26:56,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479067057] [2022-04-05 05:26:56,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:26:56,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:26:56,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:57,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:26:57,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:57,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-04-05 05:26:57,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:57,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-04-05 05:26:57,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:57,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-04-05 05:26:57,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:57,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-04-05 05:26:57,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:57,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-04-05 05:26:57,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:57,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-04-05 05:26:57,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:57,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-04-05 05:26:57,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:57,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-04-05 05:26:57,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:57,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-04-05 05:26:57,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:57,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-04-05 05:26:57,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:57,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-04-05 05:26:57,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:57,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-04-05 05:26:57,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:57,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-04-05 05:26:57,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:57,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-04-05 05:26:57,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:57,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-04-05 05:26:57,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:57,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-04-05 05:26:57,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:57,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-04-05 05:26:57,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:57,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-04-05 05:26:57,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:57,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-04-05 05:26:57,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:57,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-04-05 05:26:57,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:57,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-04-05 05:26:57,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:57,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-04-05 05:26:57,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:57,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-04-05 05:26:57,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:57,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-04-05 05:26:57,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:57,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-04-05 05:26:57,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:57,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-04-05 05:26:57,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:57,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-04-05 05:26:57,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:57,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-04-05 05:26:57,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:57,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-04-05 05:26:57,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:57,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-04-05 05:26:57,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:57,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-04-05 05:26:57,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:57,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-04-05 05:26:57,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:57,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-04-05 05:26:57,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:57,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-04-05 05:26:57,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:57,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-04-05 05:26:57,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:57,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-04-05 05:26:57,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:57,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-04-05 05:26:57,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:57,210 INFO L134 CoverageAnalysis]: Checked inductivity of 5551 backedges. 777 proven. 2110 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2022-04-05 05:26:57,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:26:57,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479067057] [2022-04-05 05:26:57,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479067057] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:26:57,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961100734] [2022-04-05 05:26:57,210 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 05:26:57,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:26:57,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:26:57,211 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:26:57,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-04-05 05:26:57,309 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 05:26:57,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:26:57,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 764 conjuncts, 79 conjunts are in the unsatisfiable core [2022-04-05 05:26:57,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:26:57,746 INFO L134 CoverageAnalysis]: Checked inductivity of 5551 backedges. 815 proven. 2072 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2022-04-05 05:26:57,746 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:26:58,192 INFO L134 CoverageAnalysis]: Checked inductivity of 5551 backedges. 815 proven. 2072 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2022-04-05 05:26:58,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961100734] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:26:58,193 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:26:58,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 43, 43] total 47 [2022-04-05 05:26:58,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639240820] [2022-04-05 05:26:58,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:26:58,193 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-04-05 05:26:58,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:26:58,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-04-05 05:26:58,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=835, Invalid=1327, Unknown=0, NotChecked=0, Total=2162 [2022-04-05 05:26:58,194 INFO L87 Difference]: Start difference. First operand 313 states and 314 transitions. Second operand has 47 states, 47 states have (on average 2.74468085106383) internal successors, (129), 44 states have internal predecessors, (129), 39 states have call successors, (42), 4 states have call predecessors, (42), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2022-04-05 05:26:59,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:26:59,018 INFO L93 Difference]: Finished difference Result 326 states and 328 transitions. [2022-04-05 05:26:59,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-04-05 05:26:59,018 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.74468085106383) internal successors, (129), 44 states have internal predecessors, (129), 39 states have call successors, (42), 4 states have call predecessors, (42), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Word has length 310 [2022-04-05 05:26:59,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:26:59,019 INFO L225 Difference]: With dead ends: 326 [2022-04-05 05:26:59,019 INFO L226 Difference]: Without dead ends: 324 [2022-04-05 05:26:59,020 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 819 GetRequests, 729 SyntacticMatches, 2 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1509 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2497, Invalid=5513, Unknown=0, NotChecked=0, Total=8010 [2022-04-05 05:26:59,020 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 114 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-05 05:26:59,020 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 45 Invalid, 884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-05 05:26:59,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2022-04-05 05:26:59,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 320. [2022-04-05 05:26:59,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 238 states have (on average 1.0084033613445378) internal successors, (240), 239 states have internal predecessors, (240), 41 states have call successors, (41), 41 states have call predecessors, (41), 40 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2022-04-05 05:26:59,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 321 transitions. [2022-04-05 05:26:59,045 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 321 transitions. Word has length 310 [2022-04-05 05:26:59,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:26:59,045 INFO L478 AbstractCegarLoop]: Abstraction has 320 states and 321 transitions. [2022-04-05 05:26:59,046 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.74468085106383) internal successors, (129), 44 states have internal predecessors, (129), 39 states have call successors, (42), 4 states have call predecessors, (42), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2022-04-05 05:26:59,046 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 321 transitions. [2022-04-05 05:26:59,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2022-04-05 05:26:59,047 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:26:59,047 INFO L499 BasicCegarLoop]: trace histogram [39, 39, 39, 38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:26:59,065 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2022-04-05 05:26:59,251 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2022-04-05 05:26:59,252 INFO L403 AbstractCegarLoop]: === Iteration 78 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:26:59,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:26:59,252 INFO L85 PathProgramCache]: Analyzing trace with hash -2016529319, now seen corresponding path program 75 times [2022-04-05 05:26:59,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:26:59,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789774880] [2022-04-05 05:26:59,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:26:59,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:26:59,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:00,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:27:00,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:00,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-04-05 05:27:00,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:00,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-04-05 05:27:00,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:00,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-04-05 05:27:00,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:00,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-04-05 05:27:00,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:00,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-04-05 05:27:00,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:00,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-04-05 05:27:00,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:00,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-04-05 05:27:00,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:00,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-04-05 05:27:00,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:00,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-04-05 05:27:00,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:00,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-04-05 05:27:00,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:00,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-04-05 05:27:00,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:00,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-04-05 05:27:00,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:00,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-04-05 05:27:00,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:00,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-04-05 05:27:00,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:00,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-04-05 05:27:00,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:00,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-04-05 05:27:00,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:00,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-04-05 05:27:00,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:00,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-04-05 05:27:00,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:00,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-04-05 05:27:00,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:00,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-04-05 05:27:00,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:00,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-04-05 05:27:00,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:00,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-04-05 05:27:00,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:00,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-04-05 05:27:00,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:00,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-04-05 05:27:00,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:00,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-04-05 05:27:00,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:00,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-04-05 05:27:00,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:00,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-04-05 05:27:00,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:00,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-04-05 05:27:00,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:00,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-04-05 05:27:00,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:00,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-04-05 05:27:00,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:00,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-04-05 05:27:00,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:00,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-04-05 05:27:00,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:00,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-04-05 05:27:00,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:00,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-04-05 05:27:00,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:00,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-04-05 05:27:00,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:00,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-04-05 05:27:00,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:00,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-04-05 05:27:00,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:00,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-04-05 05:27:00,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:00,924 INFO L134 CoverageAnalysis]: Checked inductivity of 5814 backedges. 2149 proven. 853 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2022-04-05 05:27:00,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:27:00,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789774880] [2022-04-05 05:27:00,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789774880] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:27:00,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617513751] [2022-04-05 05:27:00,925 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-05 05:27:00,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:27:00,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:27:00,926 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:27:00,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-04-05 05:27:01,093 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 39 check-sat command(s) [2022-04-05 05:27:01,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:27:01,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 778 conjuncts, 80 conjunts are in the unsatisfiable core [2022-04-05 05:27:01,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:27:03,500 INFO L134 CoverageAnalysis]: Checked inductivity of 5814 backedges. 2261 proven. 741 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2022-04-05 05:27:03,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:27:03,987 INFO L134 CoverageAnalysis]: Checked inductivity of 5814 backedges. 2261 proven. 741 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2022-04-05 05:27:03,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617513751] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:27:03,988 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:27:03,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 81, 81] total 123 [2022-04-05 05:27:03,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059799728] [2022-04-05 05:27:03,988 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:27:03,988 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 123 states [2022-04-05 05:27:03,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:27:03,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2022-04-05 05:27:03,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3327, Invalid=11679, Unknown=0, NotChecked=0, Total=15006 [2022-04-05 05:27:03,990 INFO L87 Difference]: Start difference. First operand 320 states and 321 transitions. Second operand has 123 states, 123 states have (on average 1.7073170731707317) internal successors, (210), 122 states have internal predecessors, (210), 79 states have call successors, (81), 3 states have call predecessors, (81), 1 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2022-04-05 05:27:06,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:27:06,572 INFO L93 Difference]: Finished difference Result 446 states and 486 transitions. [2022-04-05 05:27:06,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-04-05 05:27:06,572 INFO L78 Accepts]: Start accepts. Automaton has has 123 states, 123 states have (on average 1.7073170731707317) internal successors, (210), 122 states have internal predecessors, (210), 79 states have call successors, (81), 3 states have call predecessors, (81), 1 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) Word has length 317 [2022-04-05 05:27:06,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:27:06,573 INFO L225 Difference]: With dead ends: 446 [2022-04-05 05:27:06,573 INFO L226 Difference]: Without dead ends: 321 [2022-04-05 05:27:06,576 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 871 GetRequests, 670 SyntacticMatches, 1 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11219 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=7509, Invalid=33093, Unknown=0, NotChecked=0, Total=40602 [2022-04-05 05:27:06,576 INFO L913 BasicCegarLoop]: 50 mSDtfsCounter, 21 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 2190 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 2358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 2190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-05 05:27:06,577 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 127 Invalid, 2358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 2190 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-05 05:27:06,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2022-04-05 05:27:06,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 321. [2022-04-05 05:27:06,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 239 states have (on average 1.00836820083682) internal successors, (241), 240 states have internal predecessors, (241), 41 states have call successors, (41), 41 states have call predecessors, (41), 40 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2022-04-05 05:27:06,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 322 transitions. [2022-04-05 05:27:06,609 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 322 transitions. Word has length 317 [2022-04-05 05:27:06,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:27:06,609 INFO L478 AbstractCegarLoop]: Abstraction has 321 states and 322 transitions. [2022-04-05 05:27:06,609 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 123 states, 123 states have (on average 1.7073170731707317) internal successors, (210), 122 states have internal predecessors, (210), 79 states have call successors, (81), 3 states have call predecessors, (81), 1 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2022-04-05 05:27:06,609 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 322 transitions. [2022-04-05 05:27:06,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2022-04-05 05:27:06,610 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:27:06,610 INFO L499 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:27:06,627 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2022-04-05 05:27:06,810 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2022-04-05 05:27:06,811 INFO L403 AbstractCegarLoop]: === Iteration 79 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:27:06,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:27:06,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1505014563, now seen corresponding path program 76 times [2022-04-05 05:27:06,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:27:06,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592599073] [2022-04-05 05:27:06,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:27:06,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:27:06,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:07,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:27:07,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:07,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-04-05 05:27:07,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:07,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-04-05 05:27:07,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:07,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-04-05 05:27:07,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:07,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-04-05 05:27:07,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:07,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-04-05 05:27:07,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:07,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-04-05 05:27:07,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:07,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-04-05 05:27:07,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:07,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-04-05 05:27:07,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:07,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-04-05 05:27:07,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:07,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-04-05 05:27:07,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:07,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-04-05 05:27:07,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:07,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-04-05 05:27:07,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:07,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-04-05 05:27:07,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:07,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-04-05 05:27:07,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:07,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-04-05 05:27:07,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:07,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-04-05 05:27:07,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:07,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-04-05 05:27:07,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:07,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-04-05 05:27:07,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:07,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-04-05 05:27:07,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:07,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-04-05 05:27:07,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:07,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-04-05 05:27:07,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:07,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-04-05 05:27:07,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:07,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-04-05 05:27:07,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:07,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-04-05 05:27:07,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:07,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-04-05 05:27:07,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:07,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-04-05 05:27:07,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:07,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-04-05 05:27:07,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:07,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-04-05 05:27:07,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:07,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-04-05 05:27:07,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:07,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-04-05 05:27:07,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:07,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-04-05 05:27:07,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:07,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-04-05 05:27:07,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:07,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-04-05 05:27:07,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:07,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-04-05 05:27:07,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:07,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-04-05 05:27:07,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:07,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-04-05 05:27:07,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:07,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-04-05 05:27:07,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:07,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-04-05 05:27:07,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:07,541 INFO L134 CoverageAnalysis]: Checked inductivity of 5853 backedges. 817 proven. 2224 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2022-04-05 05:27:07,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:27:07,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592599073] [2022-04-05 05:27:07,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592599073] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:27:07,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599202719] [2022-04-05 05:27:07,542 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-05 05:27:07,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:27:07,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:27:07,543 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:27:07,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-04-05 05:27:07,645 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-05 05:27:07,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:27:07,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 783 conjuncts, 81 conjunts are in the unsatisfiable core [2022-04-05 05:27:07,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:27:08,080 INFO L134 CoverageAnalysis]: Checked inductivity of 5853 backedges. 856 proven. 2185 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2022-04-05 05:27:08,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:27:08,537 INFO L134 CoverageAnalysis]: Checked inductivity of 5853 backedges. 856 proven. 2185 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2022-04-05 05:27:08,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599202719] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:27:08,537 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:27:08,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 44, 44] total 48 [2022-04-05 05:27:08,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968961733] [2022-04-05 05:27:08,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:27:08,538 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-04-05 05:27:08,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:27:08,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-04-05 05:27:08,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=876, Invalid=1380, Unknown=0, NotChecked=0, Total=2256 [2022-04-05 05:27:08,538 INFO L87 Difference]: Start difference. First operand 321 states and 322 transitions. Second operand has 48 states, 48 states have (on average 2.75) internal successors, (132), 45 states have internal predecessors, (132), 40 states have call successors, (43), 4 states have call predecessors, (43), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-04-05 05:27:09,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:27:09,429 INFO L93 Difference]: Finished difference Result 334 states and 336 transitions. [2022-04-05 05:27:09,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-04-05 05:27:09,429 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.75) internal successors, (132), 45 states have internal predecessors, (132), 40 states have call successors, (43), 4 states have call predecessors, (43), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Word has length 318 [2022-04-05 05:27:09,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:27:09,431 INFO L225 Difference]: With dead ends: 334 [2022-04-05 05:27:09,431 INFO L226 Difference]: Without dead ends: 332 [2022-04-05 05:27:09,432 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 840 GetRequests, 748 SyntacticMatches, 2 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1568 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2620, Invalid=5752, Unknown=0, NotChecked=0, Total=8372 [2022-04-05 05:27:09,432 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 107 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 881 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 1087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-05 05:27:09,432 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 60 Invalid, 1087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 881 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-05 05:27:09,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2022-04-05 05:27:09,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 328. [2022-04-05 05:27:09,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 244 states have (on average 1.0081967213114753) internal successors, (246), 245 states have internal predecessors, (246), 42 states have call successors, (42), 42 states have call predecessors, (42), 41 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) [2022-04-05 05:27:09,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 329 transitions. [2022-04-05 05:27:09,480 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 329 transitions. Word has length 318 [2022-04-05 05:27:09,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:27:09,480 INFO L478 AbstractCegarLoop]: Abstraction has 328 states and 329 transitions. [2022-04-05 05:27:09,480 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.75) internal successors, (132), 45 states have internal predecessors, (132), 40 states have call successors, (43), 4 states have call predecessors, (43), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-04-05 05:27:09,480 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 329 transitions. [2022-04-05 05:27:09,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2022-04-05 05:27:09,482 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:27:09,482 INFO L499 BasicCegarLoop]: trace histogram [40, 40, 40, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:27:09,499 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2022-04-05 05:27:09,687 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:27:09,687 INFO L403 AbstractCegarLoop]: === Iteration 80 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:27:09,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:27:09,688 INFO L85 PathProgramCache]: Analyzing trace with hash -777265763, now seen corresponding path program 77 times [2022-04-05 05:27:09,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:27:09,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391057449] [2022-04-05 05:27:09,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:27:09,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:27:09,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:11,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:27:11,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:11,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-04-05 05:27:11,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:11,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-04-05 05:27:11,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:11,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-04-05 05:27:11,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:11,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-04-05 05:27:11,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:11,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-04-05 05:27:11,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:11,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-04-05 05:27:11,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:11,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-04-05 05:27:11,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:11,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-04-05 05:27:11,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:11,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-04-05 05:27:11,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:11,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-04-05 05:27:11,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:11,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-04-05 05:27:11,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:11,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-04-05 05:27:11,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:11,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-04-05 05:27:11,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:11,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-04-05 05:27:11,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:11,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-04-05 05:27:11,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:11,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-04-05 05:27:11,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:11,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-04-05 05:27:11,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:11,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-04-05 05:27:11,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:11,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-04-05 05:27:11,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:11,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-04-05 05:27:11,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:11,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-04-05 05:27:11,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:11,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-04-05 05:27:11,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:11,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-04-05 05:27:11,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:11,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-04-05 05:27:11,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:11,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-04-05 05:27:11,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:11,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-04-05 05:27:11,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:11,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-04-05 05:27:11,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:11,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-04-05 05:27:11,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:11,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-04-05 05:27:11,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:11,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-04-05 05:27:11,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:11,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-04-05 05:27:11,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:11,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-04-05 05:27:11,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:11,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-04-05 05:27:11,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:11,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-04-05 05:27:11,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:11,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-04-05 05:27:11,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:11,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-04-05 05:27:11,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:11,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-04-05 05:27:11,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:11,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-04-05 05:27:11,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:11,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-04-05 05:27:11,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:11,460 INFO L134 CoverageAnalysis]: Checked inductivity of 6123 backedges. 2264 proven. 895 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2022-04-05 05:27:11,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:27:11,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391057449] [2022-04-05 05:27:11,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391057449] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:27:11,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161667476] [2022-04-05 05:27:11,461 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-05 05:27:11,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:27:11,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:27:11,464 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:27:11,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-04-05 05:27:11,616 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 40 check-sat command(s) [2022-04-05 05:27:11,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:27:11,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 797 conjuncts, 82 conjunts are in the unsatisfiable core [2022-04-05 05:27:11,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:27:14,141 INFO L134 CoverageAnalysis]: Checked inductivity of 6123 backedges. 2379 proven. 780 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2022-04-05 05:27:14,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:27:14,679 INFO L134 CoverageAnalysis]: Checked inductivity of 6123 backedges. 2379 proven. 780 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2022-04-05 05:27:14,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161667476] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:27:14,680 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:27:14,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 83, 83] total 126 [2022-04-05 05:27:14,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424349799] [2022-04-05 05:27:14,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:27:14,681 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 126 states [2022-04-05 05:27:14,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:27:14,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2022-04-05 05:27:14,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3492, Invalid=12258, Unknown=0, NotChecked=0, Total=15750 [2022-04-05 05:27:14,683 INFO L87 Difference]: Start difference. First operand 328 states and 329 transitions. Second operand has 126 states, 126 states have (on average 1.7063492063492063) internal successors, (215), 125 states have internal predecessors, (215), 81 states have call successors, (83), 3 states have call predecessors, (83), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2022-04-05 05:27:17,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:27:17,411 INFO L93 Difference]: Finished difference Result 457 states and 498 transitions. [2022-04-05 05:27:17,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-04-05 05:27:17,411 INFO L78 Accepts]: Start accepts. Automaton has has 126 states, 126 states have (on average 1.7063492063492063) internal successors, (215), 125 states have internal predecessors, (215), 81 states have call successors, (83), 3 states have call predecessors, (83), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) Word has length 325 [2022-04-05 05:27:17,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:27:17,413 INFO L225 Difference]: With dead ends: 457 [2022-04-05 05:27:17,413 INFO L226 Difference]: Without dead ends: 329 [2022-04-05 05:27:17,415 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 893 GetRequests, 687 SyntacticMatches, 1 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11787 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=7881, Invalid=34761, Unknown=0, NotChecked=0, Total=42642 [2022-04-05 05:27:17,415 INFO L913 BasicCegarLoop]: 51 mSDtfsCounter, 21 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 2057 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 2227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 2057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-05 05:27:17,415 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 128 Invalid, 2227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 2057 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-05 05:27:17,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2022-04-05 05:27:17,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 329. [2022-04-05 05:27:17,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 245 states have (on average 1.0081632653061225) internal successors, (247), 246 states have internal predecessors, (247), 42 states have call successors, (42), 42 states have call predecessors, (42), 41 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) [2022-04-05 05:27:17,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 330 transitions. [2022-04-05 05:27:17,443 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 330 transitions. Word has length 325 [2022-04-05 05:27:17,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:27:17,443 INFO L478 AbstractCegarLoop]: Abstraction has 329 states and 330 transitions. [2022-04-05 05:27:17,443 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 126 states, 126 states have (on average 1.7063492063492063) internal successors, (215), 125 states have internal predecessors, (215), 81 states have call successors, (83), 3 states have call predecessors, (83), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2022-04-05 05:27:17,443 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 330 transitions. [2022-04-05 05:27:17,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2022-04-05 05:27:17,444 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:27:17,444 INFO L499 BasicCegarLoop]: trace histogram [40, 40, 40, 40, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:27:17,464 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0 [2022-04-05 05:27:17,644 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:27:17,645 INFO L403 AbstractCegarLoop]: === Iteration 81 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:27:17,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:27:17,645 INFO L85 PathProgramCache]: Analyzing trace with hash 14299681, now seen corresponding path program 78 times [2022-04-05 05:27:17,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:27:17,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664715867] [2022-04-05 05:27:17,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:27:17,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:27:17,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:18,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:27:18,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:18,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-04-05 05:27:18,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:18,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-04-05 05:27:18,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:18,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-04-05 05:27:18,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:18,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-04-05 05:27:18,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:18,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-04-05 05:27:18,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:18,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-04-05 05:27:18,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:18,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-04-05 05:27:18,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:18,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-04-05 05:27:18,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:18,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-04-05 05:27:18,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:18,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-04-05 05:27:18,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:18,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-04-05 05:27:18,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:18,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-04-05 05:27:18,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:18,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-04-05 05:27:18,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:18,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-04-05 05:27:18,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:18,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-04-05 05:27:18,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:18,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-04-05 05:27:18,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:18,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-04-05 05:27:18,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:18,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-04-05 05:27:18,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:18,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-04-05 05:27:18,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:18,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-04-05 05:27:18,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:18,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-04-05 05:27:18,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:18,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-04-05 05:27:18,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:18,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-04-05 05:27:18,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:18,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-04-05 05:27:18,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:18,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-04-05 05:27:18,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:18,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-04-05 05:27:18,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:18,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-04-05 05:27:18,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:18,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-04-05 05:27:18,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:18,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-04-05 05:27:18,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:18,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-04-05 05:27:18,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:18,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-04-05 05:27:18,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:18,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-04-05 05:27:18,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:18,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-04-05 05:27:18,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:18,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-04-05 05:27:18,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:18,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-04-05 05:27:18,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:18,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-04-05 05:27:18,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:18,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-04-05 05:27:18,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:18,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-04-05 05:27:18,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:18,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2022-04-05 05:27:18,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:18,396 INFO L134 CoverageAnalysis]: Checked inductivity of 6163 backedges. 858 proven. 2341 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2022-04-05 05:27:18,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:27:18,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664715867] [2022-04-05 05:27:18,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664715867] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:27:18,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402699923] [2022-04-05 05:27:18,396 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-05 05:27:18,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:27:18,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:27:18,399 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:27:18,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-04-05 05:27:18,543 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 40 check-sat command(s) [2022-04-05 05:27:18,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:27:18,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 802 conjuncts, 83 conjunts are in the unsatisfiable core [2022-04-05 05:27:18,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:27:18,989 INFO L134 CoverageAnalysis]: Checked inductivity of 6163 backedges. 898 proven. 2301 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2022-04-05 05:27:18,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:27:19,460 INFO L134 CoverageAnalysis]: Checked inductivity of 6163 backedges. 898 proven. 2301 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2022-04-05 05:27:19,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402699923] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:27:19,461 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:27:19,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 45, 45] total 49 [2022-04-05 05:27:19,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484525072] [2022-04-05 05:27:19,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:27:19,461 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-04-05 05:27:19,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:27:19,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-04-05 05:27:19,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=918, Invalid=1434, Unknown=0, NotChecked=0, Total=2352 [2022-04-05 05:27:19,462 INFO L87 Difference]: Start difference. First operand 329 states and 330 transitions. Second operand has 49 states, 49 states have (on average 2.7551020408163267) internal successors, (135), 46 states have internal predecessors, (135), 41 states have call successors, (44), 4 states have call predecessors, (44), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-04-05 05:27:20,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:27:20,387 INFO L93 Difference]: Finished difference Result 342 states and 344 transitions. [2022-04-05 05:27:20,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-04-05 05:27:20,389 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.7551020408163267) internal successors, (135), 46 states have internal predecessors, (135), 41 states have call successors, (44), 4 states have call predecessors, (44), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Word has length 326 [2022-04-05 05:27:20,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:27:20,390 INFO L225 Difference]: With dead ends: 342 [2022-04-05 05:27:20,390 INFO L226 Difference]: Without dead ends: 340 [2022-04-05 05:27:20,391 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 861 GetRequests, 767 SyntacticMatches, 2 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1628 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2746, Invalid=5996, Unknown=0, NotChecked=0, Total=8742 [2022-04-05 05:27:20,391 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 112 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 875 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 1126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-05 05:27:20,392 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 70 Invalid, 1126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 875 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-05 05:27:20,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2022-04-05 05:27:20,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 336. [2022-04-05 05:27:20,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 250 states have (on average 1.008) internal successors, (252), 251 states have internal predecessors, (252), 43 states have call successors, (43), 43 states have call predecessors, (43), 42 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2022-04-05 05:27:20,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 337 transitions. [2022-04-05 05:27:20,431 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 337 transitions. Word has length 326 [2022-04-05 05:27:20,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:27:20,432 INFO L478 AbstractCegarLoop]: Abstraction has 336 states and 337 transitions. [2022-04-05 05:27:20,432 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.7551020408163267) internal successors, (135), 46 states have internal predecessors, (135), 41 states have call successors, (44), 4 states have call predecessors, (44), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-04-05 05:27:20,432 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 337 transitions. [2022-04-05 05:27:20,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2022-04-05 05:27:20,433 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:27:20,433 INFO L499 BasicCegarLoop]: trace histogram [41, 41, 41, 40, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:27:20,449 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Ended with exit code 0 [2022-04-05 05:27:20,633 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:27:20,634 INFO L403 AbstractCegarLoop]: === Iteration 82 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:27:20,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:27:20,634 INFO L85 PathProgramCache]: Analyzing trace with hash 542196697, now seen corresponding path program 79 times [2022-04-05 05:27:20,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:27:20,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660886648] [2022-04-05 05:27:20,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:27:20,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:27:20,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:22,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:27:22,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:22,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-04-05 05:27:22,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:22,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-04-05 05:27:22,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:22,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-04-05 05:27:22,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:22,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-04-05 05:27:22,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:22,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-04-05 05:27:22,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:22,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-04-05 05:27:22,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:22,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-04-05 05:27:22,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:22,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-04-05 05:27:22,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:22,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-04-05 05:27:22,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:22,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-04-05 05:27:22,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:22,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-04-05 05:27:22,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:22,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-04-05 05:27:22,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:22,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-04-05 05:27:22,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:22,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-04-05 05:27:22,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:22,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-04-05 05:27:22,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:22,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-04-05 05:27:22,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:22,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-04-05 05:27:22,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:22,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-04-05 05:27:22,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:22,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-04-05 05:27:22,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:22,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-04-05 05:27:22,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:22,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-04-05 05:27:22,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:22,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-04-05 05:27:22,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:22,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-04-05 05:27:22,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:22,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-04-05 05:27:22,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:22,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-04-05 05:27:22,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:22,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-04-05 05:27:22,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:22,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-04-05 05:27:22,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:22,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-04-05 05:27:22,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:22,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-04-05 05:27:22,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:22,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-04-05 05:27:22,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:22,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-04-05 05:27:22,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:22,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-04-05 05:27:22,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:22,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-04-05 05:27:22,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:22,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-04-05 05:27:22,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:22,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-04-05 05:27:22,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:22,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-04-05 05:27:22,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:22,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-04-05 05:27:22,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:22,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-04-05 05:27:22,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:22,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2022-04-05 05:27:22,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:22,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-04-05 05:27:22,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:22,466 INFO L134 CoverageAnalysis]: Checked inductivity of 6440 backedges. 2382 proven. 938 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2022-04-05 05:27:22,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:27:22,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660886648] [2022-04-05 05:27:22,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660886648] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:27:22,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763254731] [2022-04-05 05:27:22,467 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-05 05:27:22,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:27:22,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:27:22,468 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:27:22,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-04-05 05:27:22,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:22,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 816 conjuncts, 84 conjunts are in the unsatisfiable core [2022-04-05 05:27:22,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:27:25,185 INFO L134 CoverageAnalysis]: Checked inductivity of 6440 backedges. 2500 proven. 820 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2022-04-05 05:27:25,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:27:25,710 INFO L134 CoverageAnalysis]: Checked inductivity of 6440 backedges. 2500 proven. 820 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2022-04-05 05:27:25,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763254731] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:27:25,710 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:27:25,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 85, 85] total 129 [2022-04-05 05:27:25,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848564740] [2022-04-05 05:27:25,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:27:25,711 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 129 states [2022-04-05 05:27:25,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:27:25,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2022-04-05 05:27:25,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3661, Invalid=12851, Unknown=0, NotChecked=0, Total=16512 [2022-04-05 05:27:25,713 INFO L87 Difference]: Start difference. First operand 336 states and 337 transitions. Second operand has 129 states, 129 states have (on average 1.7054263565891472) internal successors, (220), 128 states have internal predecessors, (220), 83 states have call successors, (85), 3 states have call predecessors, (85), 1 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) [2022-04-05 05:27:28,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:27:28,315 INFO L93 Difference]: Finished difference Result 468 states and 510 transitions. [2022-04-05 05:27:28,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-04-05 05:27:28,315 INFO L78 Accepts]: Start accepts. Automaton has has 129 states, 129 states have (on average 1.7054263565891472) internal successors, (220), 128 states have internal predecessors, (220), 83 states have call successors, (85), 3 states have call predecessors, (85), 1 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) Word has length 333 [2022-04-05 05:27:28,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:27:28,317 INFO L225 Difference]: With dead ends: 468 [2022-04-05 05:27:28,317 INFO L226 Difference]: Without dead ends: 337 [2022-04-05 05:27:28,320 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 915 GetRequests, 704 SyntacticMatches, 1 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12369 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=8262, Invalid=36470, Unknown=0, NotChecked=0, Total=44732 [2022-04-05 05:27:28,320 INFO L913 BasicCegarLoop]: 52 mSDtfsCounter, 21 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1647 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 1824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 1647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-05 05:27:28,320 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 104 Invalid, 1824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 1647 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-05 05:27:28,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2022-04-05 05:27:28,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 337. [2022-04-05 05:27:28,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 251 states have (on average 1.0079681274900398) internal successors, (253), 252 states have internal predecessors, (253), 43 states have call successors, (43), 43 states have call predecessors, (43), 42 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2022-04-05 05:27:28,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 338 transitions. [2022-04-05 05:27:28,355 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 338 transitions. Word has length 333 [2022-04-05 05:27:28,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:27:28,355 INFO L478 AbstractCegarLoop]: Abstraction has 337 states and 338 transitions. [2022-04-05 05:27:28,355 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 129 states, 129 states have (on average 1.7054263565891472) internal successors, (220), 128 states have internal predecessors, (220), 83 states have call successors, (85), 3 states have call predecessors, (85), 1 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) [2022-04-05 05:27:28,355 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 338 transitions. [2022-04-05 05:27:28,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2022-04-05 05:27:28,356 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:27:28,357 INFO L499 BasicCegarLoop]: trace histogram [41, 41, 41, 41, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:27:28,373 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2022-04-05 05:27:28,557 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:27:28,557 INFO L403 AbstractCegarLoop]: === Iteration 83 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:27:28,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:27:28,557 INFO L85 PathProgramCache]: Analyzing trace with hash 691328093, now seen corresponding path program 80 times [2022-04-05 05:27:28,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:27:28,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446707509] [2022-04-05 05:27:28,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:27:28,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:27:28,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:29,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:27:29,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:29,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-04-05 05:27:29,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:29,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-04-05 05:27:29,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:29,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-04-05 05:27:29,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:29,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-04-05 05:27:29,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:29,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-04-05 05:27:29,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:29,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-04-05 05:27:29,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:29,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-04-05 05:27:29,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:29,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-04-05 05:27:29,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:29,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-04-05 05:27:29,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:29,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-04-05 05:27:29,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:29,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-04-05 05:27:29,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:29,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-04-05 05:27:29,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:29,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-04-05 05:27:29,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:29,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-04-05 05:27:29,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:29,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-04-05 05:27:29,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:29,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-04-05 05:27:29,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:29,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-04-05 05:27:29,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:29,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-04-05 05:27:29,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:29,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-04-05 05:27:29,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:29,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-04-05 05:27:29,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:29,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-04-05 05:27:29,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:29,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-04-05 05:27:29,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:29,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-04-05 05:27:29,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:29,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-04-05 05:27:29,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:29,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-04-05 05:27:29,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:29,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-04-05 05:27:29,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:29,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-04-05 05:27:29,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:29,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-04-05 05:27:29,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:29,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-04-05 05:27:29,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:29,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-04-05 05:27:29,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:29,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-04-05 05:27:29,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:29,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-04-05 05:27:29,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:29,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-04-05 05:27:29,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:29,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-04-05 05:27:29,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:29,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-04-05 05:27:29,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:29,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-04-05 05:27:29,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:29,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-04-05 05:27:29,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:29,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-04-05 05:27:29,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:29,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-04-05 05:27:29,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:29,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2022-04-05 05:27:29,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:29,317 INFO L134 CoverageAnalysis]: Checked inductivity of 6481 backedges. 900 proven. 2461 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2022-04-05 05:27:29,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:27:29,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446707509] [2022-04-05 05:27:29,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446707509] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:27:29,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816981432] [2022-04-05 05:27:29,317 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 05:27:29,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:27:29,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:27:29,318 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:27:29,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-04-05 05:27:29,420 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 05:27:29,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:27:29,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 821 conjuncts, 85 conjunts are in the unsatisfiable core [2022-04-05 05:27:29,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:27:29,875 INFO L134 CoverageAnalysis]: Checked inductivity of 6481 backedges. 941 proven. 2420 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2022-04-05 05:27:29,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:27:30,352 INFO L134 CoverageAnalysis]: Checked inductivity of 6481 backedges. 941 proven. 2420 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2022-04-05 05:27:30,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816981432] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:27:30,353 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:27:30,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 46, 46] total 50 [2022-04-05 05:27:30,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296173410] [2022-04-05 05:27:30,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:27:30,354 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-04-05 05:27:30,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:27:30,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-04-05 05:27:30,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=961, Invalid=1489, Unknown=0, NotChecked=0, Total=2450 [2022-04-05 05:27:30,354 INFO L87 Difference]: Start difference. First operand 337 states and 338 transitions. Second operand has 50 states, 50 states have (on average 2.76) internal successors, (138), 47 states have internal predecessors, (138), 42 states have call successors, (45), 4 states have call predecessors, (45), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-04-05 05:27:31,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:27:31,294 INFO L93 Difference]: Finished difference Result 350 states and 352 transitions. [2022-04-05 05:27:31,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-04-05 05:27:31,294 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.76) internal successors, (138), 47 states have internal predecessors, (138), 42 states have call successors, (45), 4 states have call predecessors, (45), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) Word has length 334 [2022-04-05 05:27:31,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:27:31,295 INFO L225 Difference]: With dead ends: 350 [2022-04-05 05:27:31,295 INFO L226 Difference]: Without dead ends: 348 [2022-04-05 05:27:31,296 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 882 GetRequests, 786 SyntacticMatches, 2 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1689 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2875, Invalid=6245, Unknown=0, NotChecked=0, Total=9120 [2022-04-05 05:27:31,296 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 118 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 843 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 1100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-05 05:27:31,296 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 60 Invalid, 1100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [257 Valid, 843 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-05 05:27:31,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2022-04-05 05:27:31,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 344. [2022-04-05 05:27:31,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 256 states have (on average 1.0078125) internal successors, (258), 257 states have internal predecessors, (258), 44 states have call successors, (44), 44 states have call predecessors, (44), 43 states have return successors, (43), 42 states have call predecessors, (43), 43 states have call successors, (43) [2022-04-05 05:27:31,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 345 transitions. [2022-04-05 05:27:31,327 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 345 transitions. Word has length 334 [2022-04-05 05:27:31,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:27:31,328 INFO L478 AbstractCegarLoop]: Abstraction has 344 states and 345 transitions. [2022-04-05 05:27:31,328 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.76) internal successors, (138), 47 states have internal predecessors, (138), 42 states have call successors, (45), 4 states have call predecessors, (45), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-04-05 05:27:31,328 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 345 transitions. [2022-04-05 05:27:31,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2022-04-05 05:27:31,329 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:27:31,329 INFO L499 BasicCegarLoop]: trace histogram [42, 42, 42, 41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:27:31,346 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Ended with exit code 0 [2022-04-05 05:27:31,529 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:27:31,530 INFO L403 AbstractCegarLoop]: === Iteration 84 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:27:31,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:27:31,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1780292067, now seen corresponding path program 81 times [2022-04-05 05:27:31,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:27:31,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902861447] [2022-04-05 05:27:31,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:27:31,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:27:31,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:33,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:27:33,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:33,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-04-05 05:27:33,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:33,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-04-05 05:27:33,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:33,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-04-05 05:27:33,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:33,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-04-05 05:27:33,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:33,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-04-05 05:27:33,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:33,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-04-05 05:27:33,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:33,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-04-05 05:27:33,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:33,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-04-05 05:27:33,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:33,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-04-05 05:27:33,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:33,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-04-05 05:27:33,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:33,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-04-05 05:27:33,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:33,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-04-05 05:27:33,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:33,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-04-05 05:27:33,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:33,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-04-05 05:27:33,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:33,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-04-05 05:27:33,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:33,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-04-05 05:27:33,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:33,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-04-05 05:27:33,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:33,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-04-05 05:27:33,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:33,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-04-05 05:27:33,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:33,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-04-05 05:27:33,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:33,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-04-05 05:27:33,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:33,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-04-05 05:27:33,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:33,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-04-05 05:27:33,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:33,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-04-05 05:27:33,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:33,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-04-05 05:27:33,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:33,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-04-05 05:27:33,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:33,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-04-05 05:27:33,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:33,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-04-05 05:27:33,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:33,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-04-05 05:27:33,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:33,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-04-05 05:27:33,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:33,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-04-05 05:27:33,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:33,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-04-05 05:27:33,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:33,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-04-05 05:27:33,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:33,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-04-05 05:27:33,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:33,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-04-05 05:27:33,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:33,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-04-05 05:27:33,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:33,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-04-05 05:27:33,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:33,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-04-05 05:27:33,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:33,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-04-05 05:27:33,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:33,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2022-04-05 05:27:33,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:33,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-04-05 05:27:33,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:33,432 INFO L134 CoverageAnalysis]: Checked inductivity of 6765 backedges. 2503 proven. 982 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2022-04-05 05:27:33,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:27:33,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902861447] [2022-04-05 05:27:33,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902861447] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:27:33,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301132934] [2022-04-05 05:27:33,432 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-05 05:27:33,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:27:33,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:27:33,433 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:27:33,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2022-04-05 05:27:33,591 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 42 check-sat command(s) [2022-04-05 05:27:33,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:27:33,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 835 conjuncts, 86 conjunts are in the unsatisfiable core [2022-04-05 05:27:33,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:27:36,324 INFO L134 CoverageAnalysis]: Checked inductivity of 6765 backedges. 2624 proven. 861 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2022-04-05 05:27:36,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:27:36,850 INFO L134 CoverageAnalysis]: Checked inductivity of 6765 backedges. 2624 proven. 861 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2022-04-05 05:27:36,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301132934] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:27:36,850 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:27:36,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 87, 87] total 132 [2022-04-05 05:27:36,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107760690] [2022-04-05 05:27:36,850 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:27:36,851 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 132 states [2022-04-05 05:27:36,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:27:36,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2022-04-05 05:27:36,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3834, Invalid=13458, Unknown=0, NotChecked=0, Total=17292 [2022-04-05 05:27:36,853 INFO L87 Difference]: Start difference. First operand 344 states and 345 transitions. Second operand has 132 states, 132 states have (on average 1.7045454545454546) internal successors, (225), 131 states have internal predecessors, (225), 85 states have call successors, (87), 3 states have call predecessors, (87), 1 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2022-04-05 05:27:39,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:27:39,603 INFO L93 Difference]: Finished difference Result 479 states and 522 transitions. [2022-04-05 05:27:39,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-04-05 05:27:39,603 INFO L78 Accepts]: Start accepts. Automaton has has 132 states, 132 states have (on average 1.7045454545454546) internal successors, (225), 131 states have internal predecessors, (225), 85 states have call successors, (87), 3 states have call predecessors, (87), 1 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) Word has length 341 [2022-04-05 05:27:39,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:27:39,604 INFO L225 Difference]: With dead ends: 479 [2022-04-05 05:27:39,604 INFO L226 Difference]: Without dead ends: 345 [2022-04-05 05:27:39,621 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 937 GetRequests, 721 SyntacticMatches, 1 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12965 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=8652, Invalid=38220, Unknown=0, NotChecked=0, Total=46872 [2022-04-05 05:27:39,621 INFO L913 BasicCegarLoop]: 53 mSDtfsCounter, 21 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1934 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 2112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 1934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-05 05:27:39,621 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 115 Invalid, 2112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 1934 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-05 05:27:39,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2022-04-05 05:27:39,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 345. [2022-04-05 05:27:39,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 257 states have (on average 1.0077821011673151) internal successors, (259), 258 states have internal predecessors, (259), 44 states have call successors, (44), 44 states have call predecessors, (44), 43 states have return successors, (43), 42 states have call predecessors, (43), 43 states have call successors, (43) [2022-04-05 05:27:39,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 346 transitions. [2022-04-05 05:27:39,651 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 346 transitions. Word has length 341 [2022-04-05 05:27:39,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:27:39,651 INFO L478 AbstractCegarLoop]: Abstraction has 345 states and 346 transitions. [2022-04-05 05:27:39,652 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 132 states, 132 states have (on average 1.7045454545454546) internal successors, (225), 131 states have internal predecessors, (225), 85 states have call successors, (87), 3 states have call predecessors, (87), 1 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2022-04-05 05:27:39,652 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 346 transitions. [2022-04-05 05:27:39,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2022-04-05 05:27:39,653 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:27:39,653 INFO L499 BasicCegarLoop]: trace histogram [42, 42, 42, 42, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:27:39,670 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Forceful destruction successful, exit code 0 [2022-04-05 05:27:39,853 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable83 [2022-04-05 05:27:39,854 INFO L403 AbstractCegarLoop]: === Iteration 85 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:27:39,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:27:39,854 INFO L85 PathProgramCache]: Analyzing trace with hash -41962847, now seen corresponding path program 82 times [2022-04-05 05:27:39,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:27:39,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925976555] [2022-04-05 05:27:39,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:27:39,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:27:39,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:40,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:27:40,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:40,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-04-05 05:27:40,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:40,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-04-05 05:27:40,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:40,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-04-05 05:27:40,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:40,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-04-05 05:27:40,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:40,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-04-05 05:27:40,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:40,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-04-05 05:27:40,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:40,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-04-05 05:27:40,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:40,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-04-05 05:27:40,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:40,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-04-05 05:27:40,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:40,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-04-05 05:27:40,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:40,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-04-05 05:27:40,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:40,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-04-05 05:27:40,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:40,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-04-05 05:27:40,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:40,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-04-05 05:27:40,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:40,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-04-05 05:27:40,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:40,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-04-05 05:27:40,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:40,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-04-05 05:27:40,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:40,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-04-05 05:27:40,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:40,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-04-05 05:27:40,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:40,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-04-05 05:27:40,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:40,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-04-05 05:27:40,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:40,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-04-05 05:27:40,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:40,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-04-05 05:27:40,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:40,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-04-05 05:27:40,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:40,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-04-05 05:27:40,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:40,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-04-05 05:27:40,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:40,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-04-05 05:27:40,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:40,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-04-05 05:27:40,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:40,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-04-05 05:27:40,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:40,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-04-05 05:27:40,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:40,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-04-05 05:27:40,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:40,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-04-05 05:27:40,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:40,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-04-05 05:27:40,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:40,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-04-05 05:27:40,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:40,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2022-04-05 05:27:40,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:40,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-04-05 05:27:40,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:40,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-04-05 05:27:40,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:40,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-04-05 05:27:40,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:40,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-04-05 05:27:40,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:40,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-04-05 05:27:40,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:40,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-04-05 05:27:40,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:40,652 INFO L134 CoverageAnalysis]: Checked inductivity of 6807 backedges. 943 proven. 2584 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2022-04-05 05:27:40,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:27:40,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925976555] [2022-04-05 05:27:40,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925976555] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:27:40,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480502299] [2022-04-05 05:27:40,652 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-05 05:27:40,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:27:40,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:27:40,653 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:27:40,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2022-04-05 05:27:40,763 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-05 05:27:40,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:27:40,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 840 conjuncts, 87 conjunts are in the unsatisfiable core [2022-04-05 05:27:40,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:27:41,232 INFO L134 CoverageAnalysis]: Checked inductivity of 6807 backedges. 985 proven. 2542 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2022-04-05 05:27:41,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:27:41,713 INFO L134 CoverageAnalysis]: Checked inductivity of 6807 backedges. 985 proven. 2542 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2022-04-05 05:27:41,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480502299] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:27:41,713 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:27:41,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 47, 47] total 51 [2022-04-05 05:27:41,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440906295] [2022-04-05 05:27:41,713 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:27:41,714 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-04-05 05:27:41,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:27:41,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-04-05 05:27:41,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1005, Invalid=1545, Unknown=0, NotChecked=0, Total=2550 [2022-04-05 05:27:41,714 INFO L87 Difference]: Start difference. First operand 345 states and 346 transitions. Second operand has 51 states, 51 states have (on average 2.764705882352941) internal successors, (141), 48 states have internal predecessors, (141), 43 states have call successors, (46), 4 states have call predecessors, (46), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-04-05 05:27:42,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:27:42,661 INFO L93 Difference]: Finished difference Result 358 states and 360 transitions. [2022-04-05 05:27:42,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-04-05 05:27:42,661 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.764705882352941) internal successors, (141), 48 states have internal predecessors, (141), 43 states have call successors, (46), 4 states have call predecessors, (46), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Word has length 342 [2022-04-05 05:27:42,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:27:42,662 INFO L225 Difference]: With dead ends: 358 [2022-04-05 05:27:42,662 INFO L226 Difference]: Without dead ends: 356 [2022-04-05 05:27:42,663 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 903 GetRequests, 805 SyntacticMatches, 2 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1751 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=3007, Invalid=6499, Unknown=0, NotChecked=0, Total=9506 [2022-04-05 05:27:42,664 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 118 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 786 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 1007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-05 05:27:42,664 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 50 Invalid, 1007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 786 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-05 05:27:42,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-04-05 05:27:42,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 352. [2022-04-05 05:27:42,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 262 states have (on average 1.0076335877862594) internal successors, (264), 263 states have internal predecessors, (264), 45 states have call successors, (45), 45 states have call predecessors, (45), 44 states have return successors, (44), 43 states have call predecessors, (44), 44 states have call successors, (44) [2022-04-05 05:27:42,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 353 transitions. [2022-04-05 05:27:42,697 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 353 transitions. Word has length 342 [2022-04-05 05:27:42,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:27:42,697 INFO L478 AbstractCegarLoop]: Abstraction has 352 states and 353 transitions. [2022-04-05 05:27:42,697 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.764705882352941) internal successors, (141), 48 states have internal predecessors, (141), 43 states have call successors, (46), 4 states have call predecessors, (46), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-04-05 05:27:42,697 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 353 transitions. [2022-04-05 05:27:42,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2022-04-05 05:27:42,699 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:27:42,699 INFO L499 BasicCegarLoop]: trace histogram [43, 43, 43, 42, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:27:42,719 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Ended with exit code 0 [2022-04-05 05:27:42,900 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:27:42,900 INFO L403 AbstractCegarLoop]: === Iteration 86 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:27:42,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:27:42,900 INFO L85 PathProgramCache]: Analyzing trace with hash 387068761, now seen corresponding path program 83 times [2022-04-05 05:27:42,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:27:42,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015987721] [2022-04-05 05:27:42,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:27:42,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:27:42,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:44,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:27:44,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:44,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-04-05 05:27:44,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:44,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-04-05 05:27:44,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:44,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-04-05 05:27:44,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:44,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-04-05 05:27:44,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:44,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-04-05 05:27:44,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:44,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-04-05 05:27:44,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:44,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-04-05 05:27:44,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:44,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-04-05 05:27:44,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:44,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-04-05 05:27:44,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:44,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-04-05 05:27:44,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:44,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-04-05 05:27:44,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:44,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-04-05 05:27:44,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:44,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-04-05 05:27:44,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:44,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-04-05 05:27:44,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:44,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-04-05 05:27:44,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:44,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-04-05 05:27:44,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:44,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-04-05 05:27:44,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:44,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-04-05 05:27:44,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:44,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-04-05 05:27:44,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:44,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-04-05 05:27:44,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:44,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-04-05 05:27:44,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:44,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-04-05 05:27:44,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:44,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-04-05 05:27:44,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:44,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-04-05 05:27:44,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:44,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-04-05 05:27:44,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:44,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-04-05 05:27:44,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:44,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-04-05 05:27:44,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:44,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-04-05 05:27:44,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:44,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-04-05 05:27:44,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:44,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-04-05 05:27:44,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:44,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-04-05 05:27:44,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:44,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-04-05 05:27:44,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:44,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-04-05 05:27:44,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:44,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-04-05 05:27:44,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:44,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2022-04-05 05:27:44,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:44,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-04-05 05:27:44,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:44,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-04-05 05:27:44,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:44,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-04-05 05:27:44,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:44,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-04-05 05:27:44,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:44,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-04-05 05:27:44,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:44,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-04-05 05:27:44,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:44,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-04-05 05:27:44,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:44,896 INFO L134 CoverageAnalysis]: Checked inductivity of 7098 backedges. 2627 proven. 1027 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2022-04-05 05:27:44,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:27:44,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015987721] [2022-04-05 05:27:44,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015987721] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:27:44,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100618540] [2022-04-05 05:27:44,896 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-05 05:27:44,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:27:44,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:27:44,898 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:27:44,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2022-04-05 05:27:45,043 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 43 check-sat command(s) [2022-04-05 05:27:45,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:27:45,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 854 conjuncts, 88 conjunts are in the unsatisfiable core [2022-04-05 05:27:45,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:27:47,856 INFO L134 CoverageAnalysis]: Checked inductivity of 7098 backedges. 2751 proven. 903 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2022-04-05 05:27:47,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:27:48,418 INFO L134 CoverageAnalysis]: Checked inductivity of 7098 backedges. 2751 proven. 903 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2022-04-05 05:27:48,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100618540] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:27:48,419 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:27:48,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 89, 89] total 135 [2022-04-05 05:27:48,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015237367] [2022-04-05 05:27:48,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:27:48,420 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 135 states [2022-04-05 05:27:48,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:27:48,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants. [2022-04-05 05:27:48,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4011, Invalid=14079, Unknown=0, NotChecked=0, Total=18090 [2022-04-05 05:27:48,422 INFO L87 Difference]: Start difference. First operand 352 states and 353 transitions. Second operand has 135 states, 135 states have (on average 1.7037037037037037) internal successors, (230), 134 states have internal predecessors, (230), 87 states have call successors, (89), 3 states have call predecessors, (89), 1 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2022-04-05 05:27:51,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:27:51,299 INFO L93 Difference]: Finished difference Result 490 states and 534 transitions. [2022-04-05 05:27:51,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-04-05 05:27:51,300 INFO L78 Accepts]: Start accepts. Automaton has has 135 states, 135 states have (on average 1.7037037037037037) internal successors, (230), 134 states have internal predecessors, (230), 87 states have call successors, (89), 3 states have call predecessors, (89), 1 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) Word has length 349 [2022-04-05 05:27:51,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:27:51,301 INFO L225 Difference]: With dead ends: 490 [2022-04-05 05:27:51,301 INFO L226 Difference]: Without dead ends: 353 [2022-04-05 05:27:51,304 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 959 GetRequests, 738 SyntacticMatches, 1 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13575 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=9051, Invalid=40011, Unknown=0, NotChecked=0, Total=49062 [2022-04-05 05:27:51,304 INFO L913 BasicCegarLoop]: 54 mSDtfsCounter, 21 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 2148 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 2334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 2148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-05 05:27:51,304 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 126 Invalid, 2334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 2148 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-05 05:27:51,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2022-04-05 05:27:51,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 353. [2022-04-05 05:27:51,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 263 states have (on average 1.0076045627376427) internal successors, (265), 264 states have internal predecessors, (265), 45 states have call successors, (45), 45 states have call predecessors, (45), 44 states have return successors, (44), 43 states have call predecessors, (44), 44 states have call successors, (44) [2022-04-05 05:27:51,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 354 transitions. [2022-04-05 05:27:51,346 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 354 transitions. Word has length 349 [2022-04-05 05:27:51,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:27:51,346 INFO L478 AbstractCegarLoop]: Abstraction has 353 states and 354 transitions. [2022-04-05 05:27:51,346 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 135 states, 135 states have (on average 1.7037037037037037) internal successors, (230), 134 states have internal predecessors, (230), 87 states have call successors, (89), 3 states have call predecessors, (89), 1 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2022-04-05 05:27:51,346 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 354 transitions. [2022-04-05 05:27:51,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2022-04-05 05:27:51,348 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:27:51,348 INFO L499 BasicCegarLoop]: trace histogram [43, 43, 43, 43, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:27:51,365 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Ended with exit code 0 [2022-04-05 05:27:51,548 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:27:51,548 INFO L403 AbstractCegarLoop]: === Iteration 87 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:27:51,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:27:51,549 INFO L85 PathProgramCache]: Analyzing trace with hash 510409693, now seen corresponding path program 84 times [2022-04-05 05:27:51,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:27:51,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457180538] [2022-04-05 05:27:51,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:27:51,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:27:51,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:52,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:27:52,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:52,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-04-05 05:27:52,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:52,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-04-05 05:27:52,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:52,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-04-05 05:27:52,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:52,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-04-05 05:27:52,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:52,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-04-05 05:27:52,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:52,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-04-05 05:27:52,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:52,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-04-05 05:27:52,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:52,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-04-05 05:27:52,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:52,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-04-05 05:27:52,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:52,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-04-05 05:27:52,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:52,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-04-05 05:27:52,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:52,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-04-05 05:27:52,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:52,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-04-05 05:27:52,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:52,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-04-05 05:27:52,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:52,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-04-05 05:27:52,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:52,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-04-05 05:27:52,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:52,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-04-05 05:27:52,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:52,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-04-05 05:27:52,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:52,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-04-05 05:27:52,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:52,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-04-05 05:27:52,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:52,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-04-05 05:27:52,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:52,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-04-05 05:27:52,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:52,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-04-05 05:27:52,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:52,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-04-05 05:27:52,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:52,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-04-05 05:27:52,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:52,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-04-05 05:27:52,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:52,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-04-05 05:27:52,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:52,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-04-05 05:27:52,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:52,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-04-05 05:27:52,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:52,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-04-05 05:27:52,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:52,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-04-05 05:27:52,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:52,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-04-05 05:27:52,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:52,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-04-05 05:27:52,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:52,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-04-05 05:27:52,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:52,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-04-05 05:27:52,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:52,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2022-04-05 05:27:52,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:52,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-04-05 05:27:52,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:52,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-04-05 05:27:52,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:52,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-04-05 05:27:52,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:52,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-04-05 05:27:52,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:52,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-04-05 05:27:52,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:52,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-04-05 05:27:52,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:52,399 INFO L134 CoverageAnalysis]: Checked inductivity of 7141 backedges. 987 proven. 2710 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2022-04-05 05:27:52,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:27:52,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457180538] [2022-04-05 05:27:52,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457180538] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:27:52,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292632338] [2022-04-05 05:27:52,399 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-05 05:27:52,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:27:52,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:27:52,400 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:27:52,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2022-04-05 05:27:52,558 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2022-04-05 05:27:52,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:27:52,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 859 conjuncts, 89 conjunts are in the unsatisfiable core [2022-04-05 05:27:52,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:27:53,046 INFO L134 CoverageAnalysis]: Checked inductivity of 7141 backedges. 1030 proven. 2667 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2022-04-05 05:27:53,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:27:53,538 INFO L134 CoverageAnalysis]: Checked inductivity of 7141 backedges. 1030 proven. 2667 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2022-04-05 05:27:53,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292632338] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:27:53,539 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:27:53,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 48, 48] total 52 [2022-04-05 05:27:53,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390654090] [2022-04-05 05:27:53,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:27:53,540 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-04-05 05:27:53,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:27:53,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-04-05 05:27:53,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1050, Invalid=1602, Unknown=0, NotChecked=0, Total=2652 [2022-04-05 05:27:53,541 INFO L87 Difference]: Start difference. First operand 353 states and 354 transitions. Second operand has 52 states, 52 states have (on average 2.769230769230769) internal successors, (144), 49 states have internal predecessors, (144), 44 states have call successors, (47), 4 states have call predecessors, (47), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2022-04-05 05:27:54,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:27:54,596 INFO L93 Difference]: Finished difference Result 366 states and 368 transitions. [2022-04-05 05:27:54,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-04-05 05:27:54,596 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.769230769230769) internal successors, (144), 49 states have internal predecessors, (144), 44 states have call successors, (47), 4 states have call predecessors, (47), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) Word has length 350 [2022-04-05 05:27:54,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:27:54,597 INFO L225 Difference]: With dead ends: 366 [2022-04-05 05:27:54,597 INFO L226 Difference]: Without dead ends: 364 [2022-04-05 05:27:54,598 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 924 GetRequests, 824 SyntacticMatches, 2 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1814 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=3142, Invalid=6758, Unknown=0, NotChecked=0, Total=9900 [2022-04-05 05:27:54,598 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 118 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 918 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 1144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-05 05:27:54,598 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 55 Invalid, 1144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 918 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-05 05:27:54,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2022-04-05 05:27:54,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 360. [2022-04-05 05:27:54,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 268 states have (on average 1.007462686567164) internal successors, (270), 269 states have internal predecessors, (270), 46 states have call successors, (46), 46 states have call predecessors, (46), 45 states have return successors, (45), 44 states have call predecessors, (45), 45 states have call successors, (45) [2022-04-05 05:27:54,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 361 transitions. [2022-04-05 05:27:54,635 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 361 transitions. Word has length 350 [2022-04-05 05:27:54,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:27:54,635 INFO L478 AbstractCegarLoop]: Abstraction has 360 states and 361 transitions. [2022-04-05 05:27:54,635 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.769230769230769) internal successors, (144), 49 states have internal predecessors, (144), 44 states have call successors, (47), 4 states have call predecessors, (47), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2022-04-05 05:27:54,635 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 361 transitions. [2022-04-05 05:27:54,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2022-04-05 05:27:54,636 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:27:54,636 INFO L499 BasicCegarLoop]: trace histogram [44, 44, 44, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:27:54,654 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Forceful destruction successful, exit code 0 [2022-04-05 05:27:54,837 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,86 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:27:54,837 INFO L403 AbstractCegarLoop]: === Iteration 88 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:27:54,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:27:54,837 INFO L85 PathProgramCache]: Analyzing trace with hash 779095709, now seen corresponding path program 85 times [2022-04-05 05:27:54,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:27:54,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546218394] [2022-04-05 05:27:54,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:27:54,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:27:54,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:56,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:27:56,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:56,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-04-05 05:27:56,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:56,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-04-05 05:27:56,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:56,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-04-05 05:27:56,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:56,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-04-05 05:27:56,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:56,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-04-05 05:27:56,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:56,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-04-05 05:27:56,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:56,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-04-05 05:27:56,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:56,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-04-05 05:27:56,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:56,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-04-05 05:27:56,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:56,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-04-05 05:27:56,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:56,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-04-05 05:27:56,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:56,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-04-05 05:27:56,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:56,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-04-05 05:27:56,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:56,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-04-05 05:27:56,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:56,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-04-05 05:27:56,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:56,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-04-05 05:27:56,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:56,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-04-05 05:27:56,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:56,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-04-05 05:27:56,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:56,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-04-05 05:27:56,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:56,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-04-05 05:27:56,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:56,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-04-05 05:27:56,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:56,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-04-05 05:27:56,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:56,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-04-05 05:27:56,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:56,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-04-05 05:27:56,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:56,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-04-05 05:27:56,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:56,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-04-05 05:27:56,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:56,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-04-05 05:27:56,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:56,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-04-05 05:27:56,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:56,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-04-05 05:27:56,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:56,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-04-05 05:27:56,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:56,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-04-05 05:27:56,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:56,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-04-05 05:27:56,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:56,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-04-05 05:27:56,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:56,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-04-05 05:27:56,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:56,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-04-05 05:27:56,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:56,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2022-04-05 05:27:56,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:56,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-04-05 05:27:56,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:56,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-04-05 05:27:56,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:56,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-04-05 05:27:56,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:56,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-04-05 05:27:56,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:56,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-04-05 05:27:56,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:56,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-04-05 05:27:56,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:56,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-04-05 05:27:56,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:56,878 INFO L134 CoverageAnalysis]: Checked inductivity of 7439 backedges. 2754 proven. 1073 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2022-04-05 05:27:56,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:27:56,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546218394] [2022-04-05 05:27:56,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546218394] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:27:56,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230748842] [2022-04-05 05:27:56,879 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-05 05:27:56,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:27:56,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:27:56,883 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:27:56,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2022-04-05 05:27:56,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:56,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 873 conjuncts, 90 conjunts are in the unsatisfiable core [2022-04-05 05:27:56,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:27:59,949 INFO L134 CoverageAnalysis]: Checked inductivity of 7439 backedges. 2881 proven. 946 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2022-04-05 05:27:59,949 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:28:00,512 INFO L134 CoverageAnalysis]: Checked inductivity of 7439 backedges. 2881 proven. 946 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2022-04-05 05:28:00,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230748842] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:28:00,513 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:28:00,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 91, 91] total 138 [2022-04-05 05:28:00,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208176832] [2022-04-05 05:28:00,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:28:00,513 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 138 states [2022-04-05 05:28:00,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:28:00,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2022-04-05 05:28:00,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4192, Invalid=14714, Unknown=0, NotChecked=0, Total=18906 [2022-04-05 05:28:00,515 INFO L87 Difference]: Start difference. First operand 360 states and 361 transitions. Second operand has 138 states, 138 states have (on average 1.7028985507246377) internal successors, (235), 137 states have internal predecessors, (235), 89 states have call successors, (91), 3 states have call predecessors, (91), 1 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) [2022-04-05 05:28:03,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:28:03,600 INFO L93 Difference]: Finished difference Result 501 states and 546 transitions. [2022-04-05 05:28:03,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-04-05 05:28:03,600 INFO L78 Accepts]: Start accepts. Automaton has has 138 states, 138 states have (on average 1.7028985507246377) internal successors, (235), 137 states have internal predecessors, (235), 89 states have call successors, (91), 3 states have call predecessors, (91), 1 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) Word has length 357 [2022-04-05 05:28:03,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:28:03,602 INFO L225 Difference]: With dead ends: 501 [2022-04-05 05:28:03,602 INFO L226 Difference]: Without dead ends: 361 [2022-04-05 05:28:03,605 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 981 GetRequests, 755 SyntacticMatches, 1 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14199 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=9459, Invalid=41843, Unknown=0, NotChecked=0, Total=51302 [2022-04-05 05:28:03,605 INFO L913 BasicCegarLoop]: 55 mSDtfsCounter, 21 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2511 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 2704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 2511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-04-05 05:28:03,605 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 137 Invalid, 2704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 2511 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-05 05:28:03,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2022-04-05 05:28:03,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 361. [2022-04-05 05:28:03,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 269 states have (on average 1.0074349442379182) internal successors, (271), 270 states have internal predecessors, (271), 46 states have call successors, (46), 46 states have call predecessors, (46), 45 states have return successors, (45), 44 states have call predecessors, (45), 45 states have call successors, (45) [2022-04-05 05:28:03,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 362 transitions. [2022-04-05 05:28:03,648 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 362 transitions. Word has length 357 [2022-04-05 05:28:03,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:28:03,648 INFO L478 AbstractCegarLoop]: Abstraction has 361 states and 362 transitions. [2022-04-05 05:28:03,649 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 138 states, 138 states have (on average 1.7028985507246377) internal successors, (235), 137 states have internal predecessors, (235), 89 states have call successors, (91), 3 states have call predecessors, (91), 1 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) [2022-04-05 05:28:03,649 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 362 transitions. [2022-04-05 05:28:03,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2022-04-05 05:28:03,650 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:28:03,651 INFO L499 BasicCegarLoop]: trace histogram [44, 44, 44, 44, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:28:03,675 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Forceful destruction successful, exit code 0 [2022-04-05 05:28:03,865 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,87 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:28:03,865 INFO L403 AbstractCegarLoop]: === Iteration 89 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:28:03,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:28:03,866 INFO L85 PathProgramCache]: Analyzing trace with hash -762621151, now seen corresponding path program 86 times [2022-04-05 05:28:03,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:28:03,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766599078] [2022-04-05 05:28:03,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:28:03,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:28:03,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:04,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:28:04,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:04,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-04-05 05:28:04,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:04,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-04-05 05:28:04,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:04,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-04-05 05:28:04,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:04,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-04-05 05:28:04,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:04,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-04-05 05:28:04,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:04,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-04-05 05:28:04,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:04,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-04-05 05:28:04,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:04,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-04-05 05:28:04,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:04,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-04-05 05:28:04,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:04,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-04-05 05:28:04,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:04,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-04-05 05:28:04,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:04,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-04-05 05:28:04,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:04,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-04-05 05:28:04,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:04,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-04-05 05:28:04,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:04,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-04-05 05:28:04,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:04,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-04-05 05:28:04,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:04,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-04-05 05:28:04,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:04,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-04-05 05:28:04,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:04,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-04-05 05:28:04,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:04,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-04-05 05:28:04,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:04,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-04-05 05:28:04,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:04,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-04-05 05:28:04,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:04,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-04-05 05:28:04,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:04,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-04-05 05:28:04,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:04,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-04-05 05:28:04,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:04,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-04-05 05:28:04,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:04,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-04-05 05:28:04,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:04,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-04-05 05:28:04,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:04,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-04-05 05:28:04,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:04,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-04-05 05:28:04,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:04,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-04-05 05:28:04,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:04,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-04-05 05:28:04,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:04,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-04-05 05:28:04,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:04,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-04-05 05:28:04,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:04,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-04-05 05:28:04,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:04,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-04-05 05:28:04,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:04,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2022-04-05 05:28:04,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:04,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-04-05 05:28:04,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:04,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-04-05 05:28:04,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:04,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-04-05 05:28:04,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:04,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-04-05 05:28:04,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:04,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-04-05 05:28:04,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:04,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2022-04-05 05:28:04,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:04,731 INFO L134 CoverageAnalysis]: Checked inductivity of 7483 backedges. 1032 proven. 2839 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2022-04-05 05:28:04,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:28:04,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766599078] [2022-04-05 05:28:04,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766599078] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:28:04,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039112781] [2022-04-05 05:28:04,731 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 05:28:04,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:28:04,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:28:04,735 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:28:04,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2022-04-05 05:28:04,850 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 05:28:04,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:28:04,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 878 conjuncts, 91 conjunts are in the unsatisfiable core [2022-04-05 05:28:04,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:28:05,350 INFO L134 CoverageAnalysis]: Checked inductivity of 7483 backedges. 1076 proven. 2795 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2022-04-05 05:28:05,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:28:05,865 INFO L134 CoverageAnalysis]: Checked inductivity of 7483 backedges. 1076 proven. 2795 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2022-04-05 05:28:05,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039112781] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:28:05,865 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:28:05,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 49, 49] total 53 [2022-04-05 05:28:05,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047174346] [2022-04-05 05:28:05,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:28:05,866 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-04-05 05:28:05,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:28:05,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-04-05 05:28:05,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1096, Invalid=1660, Unknown=0, NotChecked=0, Total=2756 [2022-04-05 05:28:05,866 INFO L87 Difference]: Start difference. First operand 361 states and 362 transitions. Second operand has 53 states, 53 states have (on average 2.7735849056603774) internal successors, (147), 50 states have internal predecessors, (147), 45 states have call successors, (48), 4 states have call predecessors, (48), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-04-05 05:28:06,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:28:06,914 INFO L93 Difference]: Finished difference Result 374 states and 376 transitions. [2022-04-05 05:28:06,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-04-05 05:28:06,914 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.7735849056603774) internal successors, (147), 50 states have internal predecessors, (147), 45 states have call successors, (48), 4 states have call predecessors, (48), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Word has length 358 [2022-04-05 05:28:06,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:28:06,915 INFO L225 Difference]: With dead ends: 374 [2022-04-05 05:28:06,915 INFO L226 Difference]: Without dead ends: 372 [2022-04-05 05:28:06,917 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 945 GetRequests, 843 SyntacticMatches, 2 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1878 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=3280, Invalid=7022, Unknown=0, NotChecked=0, Total=10302 [2022-04-05 05:28:06,917 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 120 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 1200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-05 05:28:06,917 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 50 Invalid, 1200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 969 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-05 05:28:06,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2022-04-05 05:28:06,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 368. [2022-04-05 05:28:06,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 274 states have (on average 1.0072992700729928) internal successors, (276), 275 states have internal predecessors, (276), 47 states have call successors, (47), 47 states have call predecessors, (47), 46 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2022-04-05 05:28:06,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 369 transitions. [2022-04-05 05:28:06,956 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 369 transitions. Word has length 358 [2022-04-05 05:28:06,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:28:06,957 INFO L478 AbstractCegarLoop]: Abstraction has 368 states and 369 transitions. [2022-04-05 05:28:06,957 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.7735849056603774) internal successors, (147), 50 states have internal predecessors, (147), 45 states have call successors, (48), 4 states have call predecessors, (48), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-04-05 05:28:06,957 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 369 transitions. [2022-04-05 05:28:06,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2022-04-05 05:28:06,958 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:28:06,958 INFO L499 BasicCegarLoop]: trace histogram [45, 45, 45, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:28:06,975 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Ended with exit code 0 [2022-04-05 05:28:07,158 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,88 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:28:07,159 INFO L403 AbstractCegarLoop]: === Iteration 90 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:28:07,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:28:07,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1011417817, now seen corresponding path program 87 times [2022-04-05 05:28:07,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:28:07,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925995339] [2022-04-05 05:28:07,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:28:07,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:28:07,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:09,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:28:09,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:09,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-04-05 05:28:09,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:09,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-04-05 05:28:09,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:09,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-04-05 05:28:09,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:09,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-04-05 05:28:09,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:09,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-04-05 05:28:09,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:09,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-04-05 05:28:09,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:09,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-04-05 05:28:09,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:09,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-04-05 05:28:09,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:09,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-04-05 05:28:09,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:09,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-04-05 05:28:09,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:09,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-04-05 05:28:09,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:09,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-04-05 05:28:09,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:09,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-04-05 05:28:09,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:09,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-04-05 05:28:09,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:09,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-04-05 05:28:09,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:09,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-04-05 05:28:09,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:09,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-04-05 05:28:09,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:09,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-04-05 05:28:09,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:09,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-04-05 05:28:09,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:09,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-04-05 05:28:09,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:09,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-04-05 05:28:09,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:09,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-04-05 05:28:09,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:09,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-04-05 05:28:09,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:09,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-04-05 05:28:09,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:09,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-04-05 05:28:09,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:09,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-04-05 05:28:09,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:09,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-04-05 05:28:09,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:09,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-04-05 05:28:09,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:09,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-04-05 05:28:09,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:09,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-04-05 05:28:09,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:09,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-04-05 05:28:09,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:09,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-04-05 05:28:09,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:09,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-04-05 05:28:09,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:09,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-04-05 05:28:09,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:09,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-04-05 05:28:09,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:09,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-04-05 05:28:09,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:09,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2022-04-05 05:28:09,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:09,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-04-05 05:28:09,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:09,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-04-05 05:28:09,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:09,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-04-05 05:28:09,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:09,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-04-05 05:28:09,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:09,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-04-05 05:28:09,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:09,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2022-04-05 05:28:09,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:09,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-04-05 05:28:09,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:09,278 INFO L134 CoverageAnalysis]: Checked inductivity of 7788 backedges. 2884 proven. 1120 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2022-04-05 05:28:09,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:28:09,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925995339] [2022-04-05 05:28:09,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925995339] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:28:09,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122213860] [2022-04-05 05:28:09,278 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-05 05:28:09,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:28:09,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:28:09,279 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:28:09,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2022-04-05 05:28:09,447 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 45 check-sat command(s) [2022-04-05 05:28:09,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:28:09,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 892 conjuncts, 92 conjunts are in the unsatisfiable core [2022-04-05 05:28:09,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:28:12,525 INFO L134 CoverageAnalysis]: Checked inductivity of 7788 backedges. 3014 proven. 990 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2022-04-05 05:28:12,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:28:13,088 INFO L134 CoverageAnalysis]: Checked inductivity of 7788 backedges. 3014 proven. 990 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2022-04-05 05:28:13,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122213860] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:28:13,088 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:28:13,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 93, 93] total 141 [2022-04-05 05:28:13,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83629933] [2022-04-05 05:28:13,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:28:13,089 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 141 states [2022-04-05 05:28:13,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:28:13,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 141 interpolants. [2022-04-05 05:28:13,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4377, Invalid=15363, Unknown=0, NotChecked=0, Total=19740 [2022-04-05 05:28:13,091 INFO L87 Difference]: Start difference. First operand 368 states and 369 transitions. Second operand has 141 states, 141 states have (on average 1.702127659574468) internal successors, (240), 140 states have internal predecessors, (240), 91 states have call successors, (93), 3 states have call predecessors, (93), 1 states have return successors, (90), 90 states have call predecessors, (90), 90 states have call successors, (90) [2022-04-05 05:28:16,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:28:16,144 INFO L93 Difference]: Finished difference Result 512 states and 558 transitions. [2022-04-05 05:28:16,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-04-05 05:28:16,145 INFO L78 Accepts]: Start accepts. Automaton has has 141 states, 141 states have (on average 1.702127659574468) internal successors, (240), 140 states have internal predecessors, (240), 91 states have call successors, (93), 3 states have call predecessors, (93), 1 states have return successors, (90), 90 states have call predecessors, (90), 90 states have call successors, (90) Word has length 365 [2022-04-05 05:28:16,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:28:16,146 INFO L225 Difference]: With dead ends: 512 [2022-04-05 05:28:16,146 INFO L226 Difference]: Without dead ends: 369 [2022-04-05 05:28:16,149 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1003 GetRequests, 772 SyntacticMatches, 1 SemanticMatches, 230 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14837 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=9876, Invalid=43716, Unknown=0, NotChecked=0, Total=53592 [2022-04-05 05:28:16,149 INFO L913 BasicCegarLoop]: 56 mSDtfsCounter, 21 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1986 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 2176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 1986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-05 05:28:16,149 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 118 Invalid, 2176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 1986 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-05 05:28:16,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2022-04-05 05:28:16,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 369. [2022-04-05 05:28:16,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 275 states have (on average 1.0072727272727273) internal successors, (277), 276 states have internal predecessors, (277), 47 states have call successors, (47), 47 states have call predecessors, (47), 46 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2022-04-05 05:28:16,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 370 transitions. [2022-04-05 05:28:16,182 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 370 transitions. Word has length 365 [2022-04-05 05:28:16,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:28:16,183 INFO L478 AbstractCegarLoop]: Abstraction has 369 states and 370 transitions. [2022-04-05 05:28:16,183 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 141 states, 141 states have (on average 1.702127659574468) internal successors, (240), 140 states have internal predecessors, (240), 91 states have call successors, (93), 3 states have call predecessors, (93), 1 states have return successors, (90), 90 states have call predecessors, (90), 90 states have call successors, (90) [2022-04-05 05:28:16,183 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 370 transitions. [2022-04-05 05:28:16,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2022-04-05 05:28:16,185 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:28:16,185 INFO L499 BasicCegarLoop]: trace histogram [45, 45, 45, 45, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:28:16,207 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Ended with exit code 0 [2022-04-05 05:28:16,403 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2022-04-05 05:28:16,403 INFO L403 AbstractCegarLoop]: === Iteration 91 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:28:16,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:28:16,404 INFO L85 PathProgramCache]: Analyzing trace with hash 908690269, now seen corresponding path program 88 times [2022-04-05 05:28:16,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:28:16,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828257663] [2022-04-05 05:28:16,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:28:16,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:28:16,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:17,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:28:17,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:17,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-04-05 05:28:17,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:17,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-04-05 05:28:17,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:17,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-04-05 05:28:17,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:17,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-04-05 05:28:17,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:17,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-04-05 05:28:17,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:17,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-04-05 05:28:17,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:17,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-04-05 05:28:17,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:17,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-04-05 05:28:17,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:17,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-04-05 05:28:17,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:17,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-04-05 05:28:17,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:17,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-04-05 05:28:17,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:17,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-04-05 05:28:17,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:17,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-04-05 05:28:17,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:17,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-04-05 05:28:17,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:17,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-04-05 05:28:17,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:17,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-04-05 05:28:17,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:17,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-04-05 05:28:17,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:17,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-04-05 05:28:17,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:17,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-04-05 05:28:17,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:17,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-04-05 05:28:17,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:17,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-04-05 05:28:17,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:17,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-04-05 05:28:17,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:17,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-04-05 05:28:17,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:17,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-04-05 05:28:17,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:17,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-04-05 05:28:17,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:17,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-04-05 05:28:17,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:17,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-04-05 05:28:17,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:17,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-04-05 05:28:17,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:17,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-04-05 05:28:17,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:17,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-04-05 05:28:17,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:17,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-04-05 05:28:17,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:17,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-04-05 05:28:17,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:17,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-04-05 05:28:17,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:17,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-04-05 05:28:17,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:17,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-04-05 05:28:17,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:17,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-04-05 05:28:17,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:17,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-04-05 05:28:17,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:17,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2022-04-05 05:28:17,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:17,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-04-05 05:28:17,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:17,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-04-05 05:28:17,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:17,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-04-05 05:28:17,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:17,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-04-05 05:28:17,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:17,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-04-05 05:28:17,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:17,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2022-04-05 05:28:17,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:17,302 INFO L134 CoverageAnalysis]: Checked inductivity of 7833 backedges. 1078 proven. 2971 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2022-04-05 05:28:17,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:28:17,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828257663] [2022-04-05 05:28:17,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828257663] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:28:17,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652642824] [2022-04-05 05:28:17,303 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-05 05:28:17,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:28:17,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:28:17,304 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:28:17,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2022-04-05 05:28:17,420 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-05 05:28:17,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:28:17,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 897 conjuncts, 93 conjunts are in the unsatisfiable core [2022-04-05 05:28:17,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:28:17,934 INFO L134 CoverageAnalysis]: Checked inductivity of 7833 backedges. 1123 proven. 2926 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2022-04-05 05:28:17,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:28:18,453 INFO L134 CoverageAnalysis]: Checked inductivity of 7833 backedges. 1123 proven. 2926 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2022-04-05 05:28:18,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652642824] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:28:18,453 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:28:18,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 50, 50] total 54 [2022-04-05 05:28:18,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776858708] [2022-04-05 05:28:18,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:28:18,454 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-04-05 05:28:18,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:28:18,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-04-05 05:28:18,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1143, Invalid=1719, Unknown=0, NotChecked=0, Total=2862 [2022-04-05 05:28:18,455 INFO L87 Difference]: Start difference. First operand 369 states and 370 transitions. Second operand has 54 states, 54 states have (on average 2.7777777777777777) internal successors, (150), 51 states have internal predecessors, (150), 46 states have call successors, (49), 4 states have call predecessors, (49), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-04-05 05:28:19,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:28:19,527 INFO L93 Difference]: Finished difference Result 382 states and 384 transitions. [2022-04-05 05:28:19,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-04-05 05:28:19,527 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.7777777777777777) internal successors, (150), 51 states have internal predecessors, (150), 46 states have call successors, (49), 4 states have call predecessors, (49), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) Word has length 366 [2022-04-05 05:28:19,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:28:19,528 INFO L225 Difference]: With dead ends: 382 [2022-04-05 05:28:19,528 INFO L226 Difference]: Without dead ends: 380 [2022-04-05 05:28:19,529 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 966 GetRequests, 862 SyntacticMatches, 2 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1943 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=3421, Invalid=7291, Unknown=0, NotChecked=0, Total=10712 [2022-04-05 05:28:19,529 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 118 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1002 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 1238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 1002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-05 05:28:19,529 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 65 Invalid, 1238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 1002 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-05 05:28:19,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2022-04-05 05:28:19,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 376. [2022-04-05 05:28:19,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 280 states have (on average 1.0071428571428571) internal successors, (282), 281 states have internal predecessors, (282), 48 states have call successors, (48), 48 states have call predecessors, (48), 47 states have return successors, (47), 46 states have call predecessors, (47), 47 states have call successors, (47) [2022-04-05 05:28:19,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 377 transitions. [2022-04-05 05:28:19,567 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 377 transitions. Word has length 366 [2022-04-05 05:28:19,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:28:19,567 INFO L478 AbstractCegarLoop]: Abstraction has 376 states and 377 transitions. [2022-04-05 05:28:19,567 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.7777777777777777) internal successors, (150), 51 states have internal predecessors, (150), 46 states have call successors, (49), 4 states have call predecessors, (49), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-04-05 05:28:19,568 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 377 transitions. [2022-04-05 05:28:19,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2022-04-05 05:28:19,569 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:28:19,569 INFO L499 BasicCegarLoop]: trace histogram [46, 46, 46, 45, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:28:19,585 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Ended with exit code 0 [2022-04-05 05:28:19,769 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,90 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:28:19,769 INFO L403 AbstractCegarLoop]: === Iteration 92 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:28:19,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:28:19,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1139058915, now seen corresponding path program 89 times [2022-04-05 05:28:19,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:28:19,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462635140] [2022-04-05 05:28:19,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:28:19,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:28:19,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:21,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:28:21,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:21,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-04-05 05:28:21,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:21,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-04-05 05:28:21,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:21,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-04-05 05:28:21,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:21,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-04-05 05:28:21,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:21,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-04-05 05:28:21,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:21,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-04-05 05:28:21,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:21,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-04-05 05:28:21,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:21,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-04-05 05:28:21,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:21,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-04-05 05:28:21,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:21,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-04-05 05:28:21,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:21,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-04-05 05:28:21,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:21,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-04-05 05:28:21,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:21,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-04-05 05:28:21,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:21,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-04-05 05:28:21,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:21,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-04-05 05:28:21,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:21,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-04-05 05:28:21,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:21,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-04-05 05:28:21,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:21,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-04-05 05:28:21,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:21,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-04-05 05:28:21,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:21,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-04-05 05:28:21,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:21,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-04-05 05:28:21,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:21,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-04-05 05:28:21,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:21,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-04-05 05:28:21,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:21,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-04-05 05:28:21,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:21,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-04-05 05:28:21,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:21,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-04-05 05:28:21,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:21,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-04-05 05:28:21,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:21,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-04-05 05:28:21,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:21,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-04-05 05:28:21,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:21,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-04-05 05:28:21,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:21,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-04-05 05:28:21,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:21,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-04-05 05:28:21,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:21,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-04-05 05:28:21,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:21,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-04-05 05:28:21,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:21,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-04-05 05:28:21,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:21,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-04-05 05:28:21,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:21,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-04-05 05:28:21,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:21,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2022-04-05 05:28:21,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:21,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-04-05 05:28:21,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:21,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-04-05 05:28:21,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:21,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-04-05 05:28:21,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:21,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-04-05 05:28:21,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:21,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-04-05 05:28:21,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:21,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2022-04-05 05:28:21,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:21,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-04-05 05:28:21,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:21,992 INFO L134 CoverageAnalysis]: Checked inductivity of 8145 backedges. 3017 proven. 1168 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2022-04-05 05:28:21,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:28:21,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462635140] [2022-04-05 05:28:21,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462635140] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:28:21,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432947309] [2022-04-05 05:28:21,993 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-05 05:28:21,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:28:21,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:28:21,994 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:28:21,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2022-04-05 05:28:22,175 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2022-04-05 05:28:22,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:28:22,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 911 conjuncts, 94 conjunts are in the unsatisfiable core [2022-04-05 05:28:22,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:28:25,383 INFO L134 CoverageAnalysis]: Checked inductivity of 8145 backedges. 3150 proven. 1035 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2022-04-05 05:28:25,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:28:25,959 INFO L134 CoverageAnalysis]: Checked inductivity of 8145 backedges. 3150 proven. 1035 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2022-04-05 05:28:25,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432947309] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:28:25,960 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:28:25,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 95, 95] total 144 [2022-04-05 05:28:25,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688904471] [2022-04-05 05:28:25,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:28:25,961 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 144 states [2022-04-05 05:28:25,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:28:25,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2022-04-05 05:28:25,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4566, Invalid=16026, Unknown=0, NotChecked=0, Total=20592 [2022-04-05 05:28:25,963 INFO L87 Difference]: Start difference. First operand 376 states and 377 transitions. Second operand has 144 states, 144 states have (on average 1.7013888888888888) internal successors, (245), 143 states have internal predecessors, (245), 93 states have call successors, (95), 3 states have call predecessors, (95), 1 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2022-04-05 05:28:29,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:28:29,523 INFO L93 Difference]: Finished difference Result 523 states and 570 transitions. [2022-04-05 05:28:29,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-04-05 05:28:29,523 INFO L78 Accepts]: Start accepts. Automaton has has 144 states, 144 states have (on average 1.7013888888888888) internal successors, (245), 143 states have internal predecessors, (245), 93 states have call successors, (95), 3 states have call predecessors, (95), 1 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) Word has length 373 [2022-04-05 05:28:29,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:28:29,524 INFO L225 Difference]: With dead ends: 523 [2022-04-05 05:28:29,524 INFO L226 Difference]: Without dead ends: 377 [2022-04-05 05:28:29,527 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1025 GetRequests, 789 SyntacticMatches, 1 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15489 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=10302, Invalid=45630, Unknown=0, NotChecked=0, Total=55932 [2022-04-05 05:28:29,527 INFO L913 BasicCegarLoop]: 57 mSDtfsCounter, 21 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 3154 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 3346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 3154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-04-05 05:28:29,528 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 144 Invalid, 3346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 3154 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-04-05 05:28:29,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2022-04-05 05:28:29,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2022-04-05 05:28:29,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 281 states have (on average 1.00711743772242) internal successors, (283), 282 states have internal predecessors, (283), 48 states have call successors, (48), 48 states have call predecessors, (48), 47 states have return successors, (47), 46 states have call predecessors, (47), 47 states have call successors, (47) [2022-04-05 05:28:29,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 378 transitions. [2022-04-05 05:28:29,562 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 378 transitions. Word has length 373 [2022-04-05 05:28:29,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:28:29,562 INFO L478 AbstractCegarLoop]: Abstraction has 377 states and 378 transitions. [2022-04-05 05:28:29,563 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 144 states, 144 states have (on average 1.7013888888888888) internal successors, (245), 143 states have internal predecessors, (245), 93 states have call successors, (95), 3 states have call predecessors, (95), 1 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2022-04-05 05:28:29,563 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 378 transitions. [2022-04-05 05:28:29,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2022-04-05 05:28:29,564 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:28:29,564 INFO L499 BasicCegarLoop]: trace histogram [46, 46, 46, 46, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:28:29,581 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Ended with exit code 0 [2022-04-05 05:28:29,764 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,91 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:28:29,765 INFO L403 AbstractCegarLoop]: === Iteration 93 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:28:29,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:28:29,765 INFO L85 PathProgramCache]: Analyzing trace with hash -2134568031, now seen corresponding path program 90 times [2022-04-05 05:28:29,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:28:29,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525191627] [2022-04-05 05:28:29,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:28:29,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:28:29,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:30,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:28:30,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:30,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-04-05 05:28:30,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:30,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-04-05 05:28:30,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:30,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-04-05 05:28:30,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:30,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-04-05 05:28:30,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:30,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-04-05 05:28:30,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:30,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-04-05 05:28:30,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:30,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-04-05 05:28:30,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:30,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-04-05 05:28:30,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:30,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-04-05 05:28:30,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:30,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-04-05 05:28:30,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:30,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-04-05 05:28:30,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:30,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-04-05 05:28:30,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:30,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-04-05 05:28:30,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:30,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-04-05 05:28:30,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:30,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-04-05 05:28:30,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:30,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-04-05 05:28:30,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:30,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-04-05 05:28:30,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:30,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-04-05 05:28:30,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:30,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-04-05 05:28:30,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:30,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-04-05 05:28:30,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:30,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-04-05 05:28:30,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:30,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-04-05 05:28:30,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:30,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-04-05 05:28:30,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:30,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-04-05 05:28:30,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:30,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-04-05 05:28:30,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:30,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-04-05 05:28:30,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:30,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-04-05 05:28:30,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:30,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-04-05 05:28:30,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:30,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-04-05 05:28:30,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:30,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-04-05 05:28:30,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:30,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-04-05 05:28:30,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:30,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-04-05 05:28:30,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:30,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-04-05 05:28:30,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:30,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-04-05 05:28:30,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:30,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-04-05 05:28:30,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:30,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-04-05 05:28:30,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:30,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-04-05 05:28:30,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:30,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-04-05 05:28:30,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:30,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-04-05 05:28:30,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:30,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-04-05 05:28:30,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:30,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-04-05 05:28:30,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:30,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-04-05 05:28:30,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:30,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-04-05 05:28:30,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:30,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-04-05 05:28:30,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:30,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2022-04-05 05:28:30,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:30,702 INFO L134 CoverageAnalysis]: Checked inductivity of 8191 backedges. 1125 proven. 3106 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2022-04-05 05:28:30,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:28:30,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525191627] [2022-04-05 05:28:30,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525191627] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:28:30,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744777951] [2022-04-05 05:28:30,702 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-05 05:28:30,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:28:30,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:28:30,703 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:28:30,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2022-04-05 05:28:30,875 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 46 check-sat command(s) [2022-04-05 05:28:30,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:28:30,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 916 conjuncts, 95 conjunts are in the unsatisfiable core [2022-04-05 05:28:30,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:28:31,393 INFO L134 CoverageAnalysis]: Checked inductivity of 8191 backedges. 1171 proven. 3060 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2022-04-05 05:28:31,394 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:28:31,916 INFO L134 CoverageAnalysis]: Checked inductivity of 8191 backedges. 1171 proven. 3060 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2022-04-05 05:28:31,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [744777951] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:28:31,916 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:28:31,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 51, 51] total 55 [2022-04-05 05:28:31,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217386787] [2022-04-05 05:28:31,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:28:31,917 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-04-05 05:28:31,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:28:31,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-04-05 05:28:31,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1191, Invalid=1779, Unknown=0, NotChecked=0, Total=2970 [2022-04-05 05:28:31,918 INFO L87 Difference]: Start difference. First operand 377 states and 378 transitions. Second operand has 55 states, 55 states have (on average 2.7818181818181817) internal successors, (153), 52 states have internal predecessors, (153), 47 states have call successors, (50), 4 states have call predecessors, (50), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2022-04-05 05:28:32,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:28:32,958 INFO L93 Difference]: Finished difference Result 390 states and 392 transitions. [2022-04-05 05:28:32,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-04-05 05:28:32,959 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.7818181818181817) internal successors, (153), 52 states have internal predecessors, (153), 47 states have call successors, (50), 4 states have call predecessors, (50), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Word has length 374 [2022-04-05 05:28:32,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:28:32,960 INFO L225 Difference]: With dead ends: 390 [2022-04-05 05:28:32,960 INFO L226 Difference]: Without dead ends: 388 [2022-04-05 05:28:32,961 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 987 GetRequests, 881 SyntacticMatches, 2 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2009 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=3565, Invalid=7565, Unknown=0, NotChecked=0, Total=11130 [2022-04-05 05:28:32,961 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 132 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 804 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 1045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-05 05:28:32,961 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 50 Invalid, 1045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 804 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-05 05:28:32,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2022-04-05 05:28:33,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 384. [2022-04-05 05:28:33,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 286 states have (on average 1.006993006993007) internal successors, (288), 287 states have internal predecessors, (288), 49 states have call successors, (49), 49 states have call predecessors, (49), 48 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2022-04-05 05:28:33,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 385 transitions. [2022-04-05 05:28:33,008 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 385 transitions. Word has length 374 [2022-04-05 05:28:33,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:28:33,008 INFO L478 AbstractCegarLoop]: Abstraction has 384 states and 385 transitions. [2022-04-05 05:28:33,008 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.7818181818181817) internal successors, (153), 52 states have internal predecessors, (153), 47 states have call successors, (50), 4 states have call predecessors, (50), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2022-04-05 05:28:33,008 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 385 transitions. [2022-04-05 05:28:33,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2022-04-05 05:28:33,010 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:28:33,010 INFO L499 BasicCegarLoop]: trace histogram [47, 47, 47, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:28:33,026 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Ended with exit code 0 [2022-04-05 05:28:33,210 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,92 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:28:33,210 INFO L403 AbstractCegarLoop]: === Iteration 94 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:28:33,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:28:33,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1641172391, now seen corresponding path program 91 times [2022-04-05 05:28:33,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:28:33,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697712009] [2022-04-05 05:28:33,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:28:33,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:28:33,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:35,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:28:35,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:35,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-04-05 05:28:35,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:35,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-04-05 05:28:35,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:35,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-04-05 05:28:35,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:35,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-04-05 05:28:35,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:35,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-04-05 05:28:35,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:35,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-04-05 05:28:35,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:35,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-04-05 05:28:35,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:35,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-04-05 05:28:35,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:35,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-04-05 05:28:35,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:35,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-04-05 05:28:35,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:35,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-04-05 05:28:35,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:35,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-04-05 05:28:35,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:35,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-04-05 05:28:35,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:35,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-04-05 05:28:35,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:35,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-04-05 05:28:35,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:35,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-04-05 05:28:35,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:35,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-04-05 05:28:35,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:35,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-04-05 05:28:35,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:35,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-04-05 05:28:35,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:35,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-04-05 05:28:35,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:35,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-04-05 05:28:35,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:35,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-04-05 05:28:35,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:35,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-04-05 05:28:35,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:35,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-04-05 05:28:35,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:35,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-04-05 05:28:35,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:35,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-04-05 05:28:35,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:35,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-04-05 05:28:35,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:35,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-04-05 05:28:35,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:35,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-04-05 05:28:35,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:35,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-04-05 05:28:35,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:35,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-04-05 05:28:35,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:35,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-04-05 05:28:35,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:35,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-04-05 05:28:35,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:35,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-04-05 05:28:35,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:35,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-04-05 05:28:35,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:35,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-04-05 05:28:35,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:35,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-04-05 05:28:35,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:35,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-04-05 05:28:35,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:35,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-04-05 05:28:35,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:35,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-04-05 05:28:35,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:35,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-04-05 05:28:35,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:35,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-04-05 05:28:35,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:35,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-04-05 05:28:35,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:35,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-04-05 05:28:35,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:35,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2022-04-05 05:28:35,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:35,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-04-05 05:28:35,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:35,533 INFO L134 CoverageAnalysis]: Checked inductivity of 8510 backedges. 3153 proven. 1217 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2022-04-05 05:28:35,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:28:35,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697712009] [2022-04-05 05:28:35,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697712009] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:28:35,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495386293] [2022-04-05 05:28:35,534 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-05 05:28:35,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:28:35,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:28:35,535 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:28:35,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2022-04-05 05:28:35,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:35,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 930 conjuncts, 96 conjunts are in the unsatisfiable core [2022-04-05 05:28:35,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:28:38,956 INFO L134 CoverageAnalysis]: Checked inductivity of 8510 backedges. 3289 proven. 1081 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2022-04-05 05:28:38,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:28:39,541 INFO L134 CoverageAnalysis]: Checked inductivity of 8510 backedges. 3289 proven. 1081 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2022-04-05 05:28:39,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [495386293] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:28:39,541 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:28:39,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 97, 97] total 147 [2022-04-05 05:28:39,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553352956] [2022-04-05 05:28:39,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:28:39,542 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 147 states [2022-04-05 05:28:39,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:28:39,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 147 interpolants. [2022-04-05 05:28:39,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4759, Invalid=16703, Unknown=0, NotChecked=0, Total=21462 [2022-04-05 05:28:39,545 INFO L87 Difference]: Start difference. First operand 384 states and 385 transitions. Second operand has 147 states, 147 states have (on average 1.7006802721088434) internal successors, (250), 146 states have internal predecessors, (250), 95 states have call successors, (97), 3 states have call predecessors, (97), 1 states have return successors, (94), 94 states have call predecessors, (94), 94 states have call successors, (94) [2022-04-05 05:28:42,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:28:42,783 INFO L93 Difference]: Finished difference Result 534 states and 582 transitions. [2022-04-05 05:28:42,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2022-04-05 05:28:42,783 INFO L78 Accepts]: Start accepts. Automaton has has 147 states, 147 states have (on average 1.7006802721088434) internal successors, (250), 146 states have internal predecessors, (250), 95 states have call successors, (97), 3 states have call predecessors, (97), 1 states have return successors, (94), 94 states have call predecessors, (94), 94 states have call successors, (94) Word has length 381 [2022-04-05 05:28:42,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:28:42,784 INFO L225 Difference]: With dead ends: 534 [2022-04-05 05:28:42,784 INFO L226 Difference]: Without dead ends: 385 [2022-04-05 05:28:42,787 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1047 GetRequests, 806 SyntacticMatches, 1 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16155 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=10737, Invalid=47585, Unknown=0, NotChecked=0, Total=58322 [2022-04-05 05:28:42,787 INFO L913 BasicCegarLoop]: 58 mSDtfsCounter, 21 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 2023 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 2222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 2023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-05 05:28:42,787 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 110 Invalid, 2222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 2023 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-05 05:28:42,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2022-04-05 05:28:42,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 385. [2022-04-05 05:28:42,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 287 states have (on average 1.0069686411149825) internal successors, (289), 288 states have internal predecessors, (289), 49 states have call successors, (49), 49 states have call predecessors, (49), 48 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2022-04-05 05:28:42,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 386 transitions. [2022-04-05 05:28:42,827 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 386 transitions. Word has length 381 [2022-04-05 05:28:42,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:28:42,827 INFO L478 AbstractCegarLoop]: Abstraction has 385 states and 386 transitions. [2022-04-05 05:28:42,827 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 147 states, 147 states have (on average 1.7006802721088434) internal successors, (250), 146 states have internal predecessors, (250), 95 states have call successors, (97), 3 states have call predecessors, (97), 1 states have return successors, (94), 94 states have call predecessors, (94), 94 states have call successors, (94) [2022-04-05 05:28:42,827 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 386 transitions. [2022-04-05 05:28:42,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2022-04-05 05:28:42,829 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:28:42,829 INFO L499 BasicCegarLoop]: trace histogram [47, 47, 47, 47, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:28:42,845 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Ended with exit code 0 [2022-04-05 05:28:43,029 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,93 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:28:43,029 INFO L403 AbstractCegarLoop]: === Iteration 95 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:28:43,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:28:43,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1587849949, now seen corresponding path program 92 times [2022-04-05 05:28:43,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:28:43,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354418548] [2022-04-05 05:28:43,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:28:43,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:28:43,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:43,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:28:43,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:43,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-04-05 05:28:43,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:43,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-04-05 05:28:43,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:43,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-04-05 05:28:43,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:43,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-04-05 05:28:43,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:43,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-04-05 05:28:43,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:43,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-04-05 05:28:43,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:43,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-04-05 05:28:43,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:43,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-04-05 05:28:43,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:43,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-04-05 05:28:43,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:43,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-04-05 05:28:43,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:43,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-04-05 05:28:43,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:43,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-04-05 05:28:43,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:43,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-04-05 05:28:43,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:43,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-04-05 05:28:43,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:43,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-04-05 05:28:43,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:43,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-04-05 05:28:43,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:43,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-04-05 05:28:43,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:43,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-04-05 05:28:43,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:43,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-04-05 05:28:43,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:43,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-04-05 05:28:43,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:43,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-04-05 05:28:43,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:43,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-04-05 05:28:43,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:43,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-04-05 05:28:43,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:43,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-04-05 05:28:43,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:43,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-04-05 05:28:43,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:43,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-04-05 05:28:43,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:43,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-04-05 05:28:43,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:43,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-04-05 05:28:43,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:43,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-04-05 05:28:43,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:43,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-04-05 05:28:43,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:43,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-04-05 05:28:43,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:43,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-04-05 05:28:43,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:43,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-04-05 05:28:43,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:43,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-04-05 05:28:43,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:43,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-04-05 05:28:43,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:43,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-04-05 05:28:43,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:43,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-04-05 05:28:43,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:43,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2022-04-05 05:28:43,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:43,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-04-05 05:28:43,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:43,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2022-04-05 05:28:43,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:43,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-04-05 05:28:43,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:43,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-04-05 05:28:43,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:43,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-04-05 05:28:43,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:43,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-04-05 05:28:43,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:43,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-04-05 05:28:43,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:43,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2022-04-05 05:28:43,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:43,997 INFO L134 CoverageAnalysis]: Checked inductivity of 8557 backedges. 1173 proven. 3244 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2022-04-05 05:28:43,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:28:43,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354418548] [2022-04-05 05:28:43,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354418548] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:28:43,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494511232] [2022-04-05 05:28:43,998 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 05:28:43,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:28:43,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:28:43,999 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:28:43,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2022-04-05 05:28:44,118 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 05:28:44,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:28:44,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 935 conjuncts, 97 conjunts are in the unsatisfiable core [2022-04-05 05:28:44,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:28:44,663 INFO L134 CoverageAnalysis]: Checked inductivity of 8557 backedges. 1220 proven. 3197 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2022-04-05 05:28:44,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:28:45,201 INFO L134 CoverageAnalysis]: Checked inductivity of 8557 backedges. 1220 proven. 3197 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2022-04-05 05:28:45,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494511232] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:28:45,201 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:28:45,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 52, 52] total 56 [2022-04-05 05:28:45,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804176145] [2022-04-05 05:28:45,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:28:45,202 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-04-05 05:28:45,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:28:45,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-04-05 05:28:45,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1240, Invalid=1840, Unknown=0, NotChecked=0, Total=3080 [2022-04-05 05:28:45,203 INFO L87 Difference]: Start difference. First operand 385 states and 386 transitions. Second operand has 56 states, 56 states have (on average 2.7857142857142856) internal successors, (156), 53 states have internal predecessors, (156), 48 states have call successors, (51), 4 states have call predecessors, (51), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2022-04-05 05:28:46,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:28:46,348 INFO L93 Difference]: Finished difference Result 398 states and 400 transitions. [2022-04-05 05:28:46,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-04-05 05:28:46,348 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.7857142857142856) internal successors, (156), 53 states have internal predecessors, (156), 48 states have call successors, (51), 4 states have call predecessors, (51), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) Word has length 382 [2022-04-05 05:28:46,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:28:46,349 INFO L225 Difference]: With dead ends: 398 [2022-04-05 05:28:46,349 INFO L226 Difference]: Without dead ends: 396 [2022-04-05 05:28:46,350 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1008 GetRequests, 900 SyntacticMatches, 2 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2076 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=3712, Invalid=7844, Unknown=0, NotChecked=0, Total=11556 [2022-04-05 05:28:46,350 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 128 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 293 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 1293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 293 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-05 05:28:46,350 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 65 Invalid, 1293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [293 Valid, 1000 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-05 05:28:46,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2022-04-05 05:28:46,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 392. [2022-04-05 05:28:46,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 292 states have (on average 1.0068493150684932) internal successors, (294), 293 states have internal predecessors, (294), 50 states have call successors, (50), 50 states have call predecessors, (50), 49 states have return successors, (49), 48 states have call predecessors, (49), 49 states have call successors, (49) [2022-04-05 05:28:46,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 393 transitions. [2022-04-05 05:28:46,407 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 393 transitions. Word has length 382 [2022-04-05 05:28:46,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:28:46,407 INFO L478 AbstractCegarLoop]: Abstraction has 392 states and 393 transitions. [2022-04-05 05:28:46,407 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.7857142857142856) internal successors, (156), 53 states have internal predecessors, (156), 48 states have call successors, (51), 4 states have call predecessors, (51), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2022-04-05 05:28:46,407 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 393 transitions. [2022-04-05 05:28:46,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2022-04-05 05:28:46,408 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:28:46,408 INFO L499 BasicCegarLoop]: trace histogram [48, 48, 48, 47, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:28:46,425 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Ended with exit code 0 [2022-04-05 05:28:46,609 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,94 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:28:46,609 INFO L403 AbstractCegarLoop]: === Iteration 96 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:28:46,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:28:46,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1638711197, now seen corresponding path program 93 times [2022-04-05 05:28:46,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:28:46,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718011936] [2022-04-05 05:28:46,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:28:46,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:28:46,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:48,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:28:48,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:48,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-04-05 05:28:48,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:48,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-04-05 05:28:48,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:48,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-04-05 05:28:48,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:48,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-04-05 05:28:48,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:48,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-04-05 05:28:48,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:48,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-04-05 05:28:48,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:48,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-04-05 05:28:48,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:48,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-04-05 05:28:48,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:48,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-04-05 05:28:48,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:48,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-04-05 05:28:48,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:48,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-04-05 05:28:48,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:48,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-04-05 05:28:48,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:48,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-04-05 05:28:48,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:48,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-04-05 05:28:48,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:48,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-04-05 05:28:48,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:48,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-04-05 05:28:48,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:48,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-04-05 05:28:48,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:48,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-04-05 05:28:48,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:48,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-04-05 05:28:48,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:48,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-04-05 05:28:48,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:48,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-04-05 05:28:48,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:48,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-04-05 05:28:48,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:48,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-04-05 05:28:48,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:48,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-04-05 05:28:48,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:48,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-04-05 05:28:48,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:48,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-04-05 05:28:48,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:48,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-04-05 05:28:48,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:48,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-04-05 05:28:48,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:48,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-04-05 05:28:48,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:48,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-04-05 05:28:48,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:48,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-04-05 05:28:48,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:48,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-04-05 05:28:48,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:48,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-04-05 05:28:48,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:48,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-04-05 05:28:48,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:48,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-04-05 05:28:48,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:48,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-04-05 05:28:48,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:48,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-04-05 05:28:48,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:48,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2022-04-05 05:28:48,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:48,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-04-05 05:28:48,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:48,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2022-04-05 05:28:48,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:48,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-04-05 05:28:48,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:48,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-04-05 05:28:48,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:48,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-04-05 05:28:48,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:48,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-04-05 05:28:48,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:48,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-04-05 05:28:48,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:48,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2022-04-05 05:28:48,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:48,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-04-05 05:28:48,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:48,995 INFO L134 CoverageAnalysis]: Checked inductivity of 8883 backedges. 3292 proven. 1267 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2022-04-05 05:28:48,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:28:48,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718011936] [2022-04-05 05:28:48,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718011936] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:28:48,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321302038] [2022-04-05 05:28:48,995 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-05 05:28:48,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:28:48,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:28:48,996 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:28:48,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2022-04-05 05:28:49,176 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 48 check-sat command(s) [2022-04-05 05:28:49,176 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:28:49,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 949 conjuncts, 98 conjunts are in the unsatisfiable core [2022-04-05 05:28:49,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:28:52,611 INFO L134 CoverageAnalysis]: Checked inductivity of 8883 backedges. 3431 proven. 1128 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2022-04-05 05:28:52,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:28:53,226 INFO L134 CoverageAnalysis]: Checked inductivity of 8883 backedges. 3431 proven. 1128 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2022-04-05 05:28:53,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321302038] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:28:53,226 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:28:53,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 99, 99] total 150 [2022-04-05 05:28:53,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449819116] [2022-04-05 05:28:53,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:28:53,227 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 150 states [2022-04-05 05:28:53,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:28:53,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 150 interpolants. [2022-04-05 05:28:53,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4956, Invalid=17394, Unknown=0, NotChecked=0, Total=22350 [2022-04-05 05:28:53,229 INFO L87 Difference]: Start difference. First operand 392 states and 393 transitions. Second operand has 150 states, 150 states have (on average 1.7) internal successors, (255), 149 states have internal predecessors, (255), 97 states have call successors, (99), 3 states have call predecessors, (99), 1 states have return successors, (96), 96 states have call predecessors, (96), 96 states have call successors, (96) [2022-04-05 05:28:56,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:28:56,639 INFO L93 Difference]: Finished difference Result 545 states and 594 transitions. [2022-04-05 05:28:56,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-04-05 05:28:56,640 INFO L78 Accepts]: Start accepts. Automaton has has 150 states, 150 states have (on average 1.7) internal successors, (255), 149 states have internal predecessors, (255), 97 states have call successors, (99), 3 states have call predecessors, (99), 1 states have return successors, (96), 96 states have call predecessors, (96), 96 states have call successors, (96) Word has length 389 [2022-04-05 05:28:56,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:28:56,642 INFO L225 Difference]: With dead ends: 545 [2022-04-05 05:28:56,642 INFO L226 Difference]: Without dead ends: 393 [2022-04-05 05:28:56,645 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1069 GetRequests, 823 SyntacticMatches, 1 SemanticMatches, 245 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16835 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=11181, Invalid=49581, Unknown=0, NotChecked=0, Total=60762 [2022-04-05 05:28:56,646 INFO L913 BasicCegarLoop]: 59 mSDtfsCounter, 21 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 2158 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 2361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 2158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-04-05 05:28:56,646 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 96 Invalid, 2361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 2158 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-05 05:28:56,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2022-04-05 05:28:56,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 393. [2022-04-05 05:28:56,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 293 states have (on average 1.006825938566553) internal successors, (295), 294 states have internal predecessors, (295), 50 states have call successors, (50), 50 states have call predecessors, (50), 49 states have return successors, (49), 48 states have call predecessors, (49), 49 states have call successors, (49) [2022-04-05 05:28:56,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 394 transitions. [2022-04-05 05:28:56,693 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 394 transitions. Word has length 389 [2022-04-05 05:28:56,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:28:56,693 INFO L478 AbstractCegarLoop]: Abstraction has 393 states and 394 transitions. [2022-04-05 05:28:56,693 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 150 states, 150 states have (on average 1.7) internal successors, (255), 149 states have internal predecessors, (255), 97 states have call successors, (99), 3 states have call predecessors, (99), 1 states have return successors, (96), 96 states have call predecessors, (96), 96 states have call successors, (96) [2022-04-05 05:28:56,693 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 394 transitions. [2022-04-05 05:28:56,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2022-04-05 05:28:56,695 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:28:56,695 INFO L499 BasicCegarLoop]: trace histogram [48, 48, 48, 48, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:28:56,712 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Ended with exit code 0 [2022-04-05 05:28:56,896 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable95 [2022-04-05 05:28:56,896 INFO L403 AbstractCegarLoop]: === Iteration 97 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:28:56,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:28:56,896 INFO L85 PathProgramCache]: Analyzing trace with hash 183825441, now seen corresponding path program 94 times [2022-04-05 05:28:56,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:28:56,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070149715] [2022-04-05 05:28:56,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:28:56,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:28:56,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:57,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:28:57,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:57,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-04-05 05:28:57,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:57,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-04-05 05:28:57,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:57,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-04-05 05:28:57,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:57,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-04-05 05:28:57,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:57,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-04-05 05:28:57,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:57,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-04-05 05:28:57,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:57,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-04-05 05:28:57,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:57,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-04-05 05:28:57,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:57,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-04-05 05:28:57,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:57,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-04-05 05:28:57,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:57,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-04-05 05:28:57,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:57,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-04-05 05:28:57,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:57,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-04-05 05:28:57,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:57,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-04-05 05:28:57,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:57,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-04-05 05:28:57,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:57,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-04-05 05:28:57,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:57,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-04-05 05:28:57,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:57,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-04-05 05:28:57,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:57,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-04-05 05:28:57,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:57,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-04-05 05:28:57,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:57,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-04-05 05:28:57,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:57,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-04-05 05:28:57,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:57,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-04-05 05:28:57,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:57,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-04-05 05:28:57,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:57,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-04-05 05:28:57,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:57,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-04-05 05:28:57,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:57,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-04-05 05:28:57,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:57,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-04-05 05:28:57,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:57,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-04-05 05:28:57,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:57,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-04-05 05:28:57,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:57,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-04-05 05:28:57,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:57,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-04-05 05:28:57,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:57,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-04-05 05:28:57,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:57,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-04-05 05:28:57,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:57,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-04-05 05:28:57,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:57,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-04-05 05:28:57,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:57,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-04-05 05:28:57,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:57,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-04-05 05:28:57,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:57,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2022-04-05 05:28:57,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:57,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-04-05 05:28:57,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:57,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2022-04-05 05:28:57,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:57,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-04-05 05:28:57,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:57,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-04-05 05:28:57,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:57,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-04-05 05:28:57,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:57,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-04-05 05:28:57,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:57,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-04-05 05:28:57,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:57,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2022-04-05 05:28:57,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:57,876 INFO L134 CoverageAnalysis]: Checked inductivity of 8931 backedges. 1222 proven. 3385 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2022-04-05 05:28:57,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:28:57,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070149715] [2022-04-05 05:28:57,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070149715] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:28:57,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810572996] [2022-04-05 05:28:57,876 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-05 05:28:57,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:28:57,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:28:57,879 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:28:57,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2022-04-05 05:28:58,005 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-05 05:28:58,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:28:58,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 954 conjuncts, 99 conjunts are in the unsatisfiable core [2022-04-05 05:28:58,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:28:58,550 INFO L134 CoverageAnalysis]: Checked inductivity of 8931 backedges. 1270 proven. 3337 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2022-04-05 05:28:58,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:28:59,129 INFO L134 CoverageAnalysis]: Checked inductivity of 8931 backedges. 1270 proven. 3337 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2022-04-05 05:28:59,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810572996] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:28:59,130 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:28:59,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 53, 53] total 57 [2022-04-05 05:28:59,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541960894] [2022-04-05 05:28:59,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:28:59,130 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-04-05 05:28:59,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:28:59,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-04-05 05:28:59,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1290, Invalid=1902, Unknown=0, NotChecked=0, Total=3192 [2022-04-05 05:28:59,131 INFO L87 Difference]: Start difference. First operand 393 states and 394 transitions. Second operand has 57 states, 57 states have (on average 2.789473684210526) internal successors, (159), 54 states have internal predecessors, (159), 49 states have call successors, (52), 4 states have call predecessors, (52), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-04-05 05:29:00,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:29:00,270 INFO L93 Difference]: Finished difference Result 406 states and 408 transitions. [2022-04-05 05:29:00,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-04-05 05:29:00,271 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 2.789473684210526) internal successors, (159), 54 states have internal predecessors, (159), 49 states have call successors, (52), 4 states have call predecessors, (52), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Word has length 390 [2022-04-05 05:29:00,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:29:00,272 INFO L225 Difference]: With dead ends: 406 [2022-04-05 05:29:00,272 INFO L226 Difference]: Without dead ends: 404 [2022-04-05 05:29:00,273 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1029 GetRequests, 919 SyntacticMatches, 2 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2144 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=3862, Invalid=8128, Unknown=0, NotChecked=0, Total=11990 [2022-04-05 05:29:00,273 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 131 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 989 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 1240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-05 05:29:00,273 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 40 Invalid, 1240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 989 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-05 05:29:00,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2022-04-05 05:29:00,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 400. [2022-04-05 05:29:00,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 298 states have (on average 1.0067114093959733) internal successors, (300), 299 states have internal predecessors, (300), 51 states have call successors, (51), 51 states have call predecessors, (51), 50 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) [2022-04-05 05:29:00,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 401 transitions. [2022-04-05 05:29:00,311 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 401 transitions. Word has length 390 [2022-04-05 05:29:00,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:29:00,311 INFO L478 AbstractCegarLoop]: Abstraction has 400 states and 401 transitions. [2022-04-05 05:29:00,311 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 2.789473684210526) internal successors, (159), 54 states have internal predecessors, (159), 49 states have call successors, (52), 4 states have call predecessors, (52), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-04-05 05:29:00,311 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 401 transitions. [2022-04-05 05:29:00,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2022-04-05 05:29:00,312 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:29:00,313 INFO L499 BasicCegarLoop]: trace histogram [49, 49, 49, 48, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:29:00,329 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Ended with exit code 0 [2022-04-05 05:29:00,513 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable96 [2022-04-05 05:29:00,513 INFO L403 AbstractCegarLoop]: === Iteration 98 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:29:00,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:29:00,513 INFO L85 PathProgramCache]: Analyzing trace with hash 150487513, now seen corresponding path program 95 times [2022-04-05 05:29:00,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:29:00,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630745222] [2022-04-05 05:29:00,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:29:00,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:29:00,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:29:02,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-04-05 05:29:02,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-04-05 05:29:02,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-04-05 05:29:02,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-04-05 05:29:02,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-04-05 05:29:02,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-04-05 05:29:02,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-04-05 05:29:02,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-04-05 05:29:02,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-04-05 05:29:02,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-04-05 05:29:02,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-04-05 05:29:02,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-04-05 05:29:02,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-04-05 05:29:02,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-04-05 05:29:02,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-04-05 05:29:02,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-04-05 05:29:02,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-04-05 05:29:02,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-04-05 05:29:02,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-04-05 05:29:02,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-04-05 05:29:02,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-04-05 05:29:02,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-04-05 05:29:02,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-04-05 05:29:02,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-04-05 05:29:02,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-04-05 05:29:02,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-04-05 05:29:02,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-04-05 05:29:02,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-04-05 05:29:02,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-04-05 05:29:02,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-04-05 05:29:02,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-04-05 05:29:02,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-04-05 05:29:02,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-04-05 05:29:02,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-04-05 05:29:02,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-04-05 05:29:02,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-04-05 05:29:02,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-04-05 05:29:02,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-04-05 05:29:02,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2022-04-05 05:29:02,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-04-05 05:29:02,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2022-04-05 05:29:02,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-04-05 05:29:02,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-04-05 05:29:02,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-04-05 05:29:02,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:03,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-04-05 05:29:03,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:03,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-04-05 05:29:03,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:03,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2022-04-05 05:29:03,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:03,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-04-05 05:29:03,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:03,006 INFO L134 CoverageAnalysis]: Checked inductivity of 9264 backedges. 3434 proven. 1318 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2022-04-05 05:29:03,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:29:03,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630745222] [2022-04-05 05:29:03,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630745222] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:29:03,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936041148] [2022-04-05 05:29:03,006 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-05 05:29:03,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:29:03,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:29:03,007 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:29:03,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2022-04-05 05:29:03,175 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2022-04-05 05:29:03,176 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:29:03,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 968 conjuncts, 100 conjunts are in the unsatisfiable core [2022-04-05 05:29:03,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:29:06,744 INFO L134 CoverageAnalysis]: Checked inductivity of 9264 backedges. 3576 proven. 1176 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2022-04-05 05:29:06,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:29:07,409 INFO L134 CoverageAnalysis]: Checked inductivity of 9264 backedges. 3576 proven. 1176 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2022-04-05 05:29:07,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [936041148] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:29:07,409 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:29:07,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 101, 101] total 153 [2022-04-05 05:29:07,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029254890] [2022-04-05 05:29:07,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:29:07,410 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 153 states [2022-04-05 05:29:07,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:29:07,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 153 interpolants. [2022-04-05 05:29:07,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5157, Invalid=18099, Unknown=0, NotChecked=0, Total=23256 [2022-04-05 05:29:07,412 INFO L87 Difference]: Start difference. First operand 400 states and 401 transitions. Second operand has 153 states, 153 states have (on average 1.6993464052287581) internal successors, (260), 152 states have internal predecessors, (260), 99 states have call successors, (101), 3 states have call predecessors, (101), 1 states have return successors, (98), 98 states have call predecessors, (98), 98 states have call successors, (98) [2022-04-05 05:29:10,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:29:10,910 INFO L93 Difference]: Finished difference Result 556 states and 606 transitions. [2022-04-05 05:29:10,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-04-05 05:29:10,911 INFO L78 Accepts]: Start accepts. Automaton has has 153 states, 153 states have (on average 1.6993464052287581) internal successors, (260), 152 states have internal predecessors, (260), 99 states have call successors, (101), 3 states have call predecessors, (101), 1 states have return successors, (98), 98 states have call predecessors, (98), 98 states have call successors, (98) Word has length 397 [2022-04-05 05:29:10,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:29:10,912 INFO L225 Difference]: With dead ends: 556 [2022-04-05 05:29:10,912 INFO L226 Difference]: Without dead ends: 401 [2022-04-05 05:29:10,915 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1091 GetRequests, 840 SyntacticMatches, 1 SemanticMatches, 250 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17529 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=11634, Invalid=51618, Unknown=0, NotChecked=0, Total=63252 [2022-04-05 05:29:10,916 INFO L913 BasicCegarLoop]: 60 mSDtfsCounter, 21 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1874 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 2083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 1874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-05 05:29:10,916 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 97 Invalid, 2083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 1874 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-05 05:29:10,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2022-04-05 05:29:10,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 401. [2022-04-05 05:29:10,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 299 states have (on average 1.0066889632107023) internal successors, (301), 300 states have internal predecessors, (301), 51 states have call successors, (51), 51 states have call predecessors, (51), 50 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) [2022-04-05 05:29:10,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 402 transitions. [2022-04-05 05:29:10,955 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 402 transitions. Word has length 397 [2022-04-05 05:29:10,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:29:10,955 INFO L478 AbstractCegarLoop]: Abstraction has 401 states and 402 transitions. [2022-04-05 05:29:10,956 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 153 states, 153 states have (on average 1.6993464052287581) internal successors, (260), 152 states have internal predecessors, (260), 99 states have call successors, (101), 3 states have call predecessors, (101), 1 states have return successors, (98), 98 states have call predecessors, (98), 98 states have call successors, (98) [2022-04-05 05:29:10,956 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 402 transitions. [2022-04-05 05:29:10,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2022-04-05 05:29:10,957 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:29:10,957 INFO L499 BasicCegarLoop]: trace histogram [49, 49, 49, 49, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:29:10,974 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Ended with exit code 0 [2022-04-05 05:29:11,158 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,97 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:29:11,158 INFO L403 AbstractCegarLoop]: === Iteration 99 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:29:11,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:29:11,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1142272605, now seen corresponding path program 96 times [2022-04-05 05:29:11,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:29:11,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12659917] [2022-04-05 05:29:11,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:29:11,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:29:11,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:12,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:29:12,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:12,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-04-05 05:29:12,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:12,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-04-05 05:29:12,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:12,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-04-05 05:29:12,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:12,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-04-05 05:29:12,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:12,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-04-05 05:29:12,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:12,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-04-05 05:29:12,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:12,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-04-05 05:29:12,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:12,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-04-05 05:29:12,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:12,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-04-05 05:29:12,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:12,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-04-05 05:29:12,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:12,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-04-05 05:29:12,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:12,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-04-05 05:29:12,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:12,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-04-05 05:29:12,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:12,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-04-05 05:29:12,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:12,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-04-05 05:29:12,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:12,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-04-05 05:29:12,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:12,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-04-05 05:29:12,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:12,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-04-05 05:29:12,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:12,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-04-05 05:29:12,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:12,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-04-05 05:29:12,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:12,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-04-05 05:29:12,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:12,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-04-05 05:29:12,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:12,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-04-05 05:29:12,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:12,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-04-05 05:29:12,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:12,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-04-05 05:29:12,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:12,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-04-05 05:29:12,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:12,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-04-05 05:29:12,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:12,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-04-05 05:29:12,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:12,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-04-05 05:29:12,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:12,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-04-05 05:29:12,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:12,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-04-05 05:29:12,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:12,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-04-05 05:29:12,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:12,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-04-05 05:29:12,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:12,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2022-04-05 05:29:12,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:12,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-04-05 05:29:12,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:12,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-04-05 05:29:12,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:12,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-04-05 05:29:12,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:12,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-04-05 05:29:12,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:12,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-04-05 05:29:12,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:12,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-04-05 05:29:12,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:12,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-04-05 05:29:12,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:12,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2022-04-05 05:29:12,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:12,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-04-05 05:29:12,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:12,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-04-05 05:29:12,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:12,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-04-05 05:29:12,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:12,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-04-05 05:29:12,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:12,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-04-05 05:29:12,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:12,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2022-04-05 05:29:12,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:12,180 INFO L134 CoverageAnalysis]: Checked inductivity of 9313 backedges. 1272 proven. 3529 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2022-04-05 05:29:12,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:29:12,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12659917] [2022-04-05 05:29:12,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12659917] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:29:12,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468622633] [2022-04-05 05:29:12,180 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-05 05:29:12,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:29:12,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:29:12,181 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:29:12,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2022-04-05 05:29:12,369 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2022-04-05 05:29:12,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:29:12,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 973 conjuncts, 101 conjunts are in the unsatisfiable core [2022-04-05 05:29:12,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:29:12,940 INFO L134 CoverageAnalysis]: Checked inductivity of 9313 backedges. 1321 proven. 3480 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2022-04-05 05:29:12,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:29:13,501 INFO L134 CoverageAnalysis]: Checked inductivity of 9313 backedges. 1321 proven. 3480 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2022-04-05 05:29:13,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468622633] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:29:13,501 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:29:13,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 54, 54] total 58 [2022-04-05 05:29:13,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665627330] [2022-04-05 05:29:13,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:29:13,502 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-04-05 05:29:13,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:29:13,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-04-05 05:29:13,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1341, Invalid=1965, Unknown=0, NotChecked=0, Total=3306 [2022-04-05 05:29:13,503 INFO L87 Difference]: Start difference. First operand 401 states and 402 transitions. Second operand has 58 states, 58 states have (on average 2.793103448275862) internal successors, (162), 55 states have internal predecessors, (162), 50 states have call successors, (53), 4 states have call predecessors, (53), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-04-05 05:29:14,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:29:14,824 INFO L93 Difference]: Finished difference Result 414 states and 416 transitions. [2022-04-05 05:29:14,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-04-05 05:29:14,825 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 2.793103448275862) internal successors, (162), 55 states have internal predecessors, (162), 50 states have call successors, (53), 4 states have call predecessors, (53), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) Word has length 398 [2022-04-05 05:29:14,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:29:14,826 INFO L225 Difference]: With dead ends: 414 [2022-04-05 05:29:14,826 INFO L226 Difference]: Without dead ends: 412 [2022-04-05 05:29:14,827 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1050 GetRequests, 938 SyntacticMatches, 2 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2213 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=4015, Invalid=8417, Unknown=0, NotChecked=0, Total=12432 [2022-04-05 05:29:14,827 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 123 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 1207 mSolverCounterSat, 256 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 1463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 256 IncrementalHoareTripleChecker+Valid, 1207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-05 05:29:14,827 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 85 Invalid, 1463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [256 Valid, 1207 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-05 05:29:14,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2022-04-05 05:29:14,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 408. [2022-04-05 05:29:14,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 304 states have (on average 1.006578947368421) internal successors, (306), 305 states have internal predecessors, (306), 52 states have call successors, (52), 52 states have call predecessors, (52), 51 states have return successors, (51), 50 states have call predecessors, (51), 51 states have call successors, (51) [2022-04-05 05:29:14,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 409 transitions. [2022-04-05 05:29:14,867 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 409 transitions. Word has length 398 [2022-04-05 05:29:14,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:29:14,868 INFO L478 AbstractCegarLoop]: Abstraction has 408 states and 409 transitions. [2022-04-05 05:29:14,868 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 2.793103448275862) internal successors, (162), 55 states have internal predecessors, (162), 50 states have call successors, (53), 4 states have call predecessors, (53), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-04-05 05:29:14,868 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 409 transitions. [2022-04-05 05:29:14,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2022-04-05 05:29:14,870 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:29:14,870 INFO L499 BasicCegarLoop]: trace histogram [50, 50, 50, 49, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:29:14,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Forceful destruction successful, exit code 0 [2022-04-05 05:29:15,075 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,98 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:29:15,075 INFO L403 AbstractCegarLoop]: === Iteration 100 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:29:15,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:29:15,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1007925219, now seen corresponding path program 97 times [2022-04-05 05:29:15,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:29:15,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752603453] [2022-04-05 05:29:15,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:29:15,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:29:15,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:17,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:29:17,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:17,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-04-05 05:29:17,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:17,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-04-05 05:29:17,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:17,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-04-05 05:29:17,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:17,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-04-05 05:29:17,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:17,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-04-05 05:29:17,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:17,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-04-05 05:29:17,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:17,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-04-05 05:29:17,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:17,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-04-05 05:29:17,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:17,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-04-05 05:29:17,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:17,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-04-05 05:29:17,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:17,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-04-05 05:29:17,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:17,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-04-05 05:29:17,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:17,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-04-05 05:29:17,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:17,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-04-05 05:29:17,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:17,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-04-05 05:29:17,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:17,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-04-05 05:29:17,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:17,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-04-05 05:29:17,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:17,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-04-05 05:29:17,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:17,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-04-05 05:29:17,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:17,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-04-05 05:29:17,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:17,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-04-05 05:29:17,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:17,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-04-05 05:29:17,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:17,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-04-05 05:29:17,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:17,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-04-05 05:29:17,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:17,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-04-05 05:29:17,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:17,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-04-05 05:29:17,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:17,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-04-05 05:29:17,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:17,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-04-05 05:29:17,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:17,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-04-05 05:29:17,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:17,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-04-05 05:29:17,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:17,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-04-05 05:29:17,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:17,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-04-05 05:29:17,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:17,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-04-05 05:29:17,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:17,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2022-04-05 05:29:17,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:17,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-04-05 05:29:17,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:17,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-04-05 05:29:17,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:17,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-04-05 05:29:17,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:17,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-04-05 05:29:17,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:17,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-04-05 05:29:17,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:17,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-04-05 05:29:17,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:17,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-04-05 05:29:17,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:17,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2022-04-05 05:29:17,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:17,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-04-05 05:29:17,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:17,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-04-05 05:29:17,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:17,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-04-05 05:29:17,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:17,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-04-05 05:29:17,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:17,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-04-05 05:29:17,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:17,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2022-04-05 05:29:17,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:17,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-04-05 05:29:17,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:17,724 INFO L134 CoverageAnalysis]: Checked inductivity of 9653 backedges. 3579 proven. 1370 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2022-04-05 05:29:17,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:29:17,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752603453] [2022-04-05 05:29:17,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752603453] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:29:17,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174882958] [2022-04-05 05:29:17,724 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-05 05:29:17,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:29:17,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:29:17,725 INFO L229 MonitoredProcess]: Starting monitored process 99 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:29:17,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2022-04-05 05:29:17,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:17,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 987 conjuncts, 102 conjunts are in the unsatisfiable core [2022-04-05 05:29:17,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:29:21,568 INFO L134 CoverageAnalysis]: Checked inductivity of 9653 backedges. 3724 proven. 1225 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2022-04-05 05:29:21,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:29:22,208 INFO L134 CoverageAnalysis]: Checked inductivity of 9653 backedges. 3724 proven. 1225 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2022-04-05 05:29:22,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174882958] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:29:22,208 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:29:22,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 103, 103] total 156 [2022-04-05 05:29:22,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927790326] [2022-04-05 05:29:22,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:29:22,209 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 156 states [2022-04-05 05:29:22,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:29:22,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2022-04-05 05:29:22,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5362, Invalid=18818, Unknown=0, NotChecked=0, Total=24180 [2022-04-05 05:29:22,211 INFO L87 Difference]: Start difference. First operand 408 states and 409 transitions. Second operand has 156 states, 156 states have (on average 1.6987179487179487) internal successors, (265), 155 states have internal predecessors, (265), 101 states have call successors, (103), 3 states have call predecessors, (103), 1 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2022-04-05 05:29:26,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:29:26,056 INFO L93 Difference]: Finished difference Result 567 states and 618 transitions. [2022-04-05 05:29:26,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-04-05 05:29:26,057 INFO L78 Accepts]: Start accepts. Automaton has has 156 states, 156 states have (on average 1.6987179487179487) internal successors, (265), 155 states have internal predecessors, (265), 101 states have call successors, (103), 3 states have call predecessors, (103), 1 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) Word has length 405 [2022-04-05 05:29:26,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:29:26,058 INFO L225 Difference]: With dead ends: 567 [2022-04-05 05:29:26,059 INFO L226 Difference]: Without dead ends: 409 [2022-04-05 05:29:26,063 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1113 GetRequests, 857 SyntacticMatches, 1 SemanticMatches, 255 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18237 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=12096, Invalid=53696, Unknown=0, NotChecked=0, Total=65792 [2022-04-05 05:29:26,063 INFO L913 BasicCegarLoop]: 61 mSDtfsCounter, 21 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 2955 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 3166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 2955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-04-05 05:29:26,063 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 148 Invalid, 3166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 2955 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-04-05 05:29:26,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2022-04-05 05:29:26,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 409. [2022-04-05 05:29:26,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 305 states have (on average 1.0065573770491802) internal successors, (307), 306 states have internal predecessors, (307), 52 states have call successors, (52), 52 states have call predecessors, (52), 51 states have return successors, (51), 50 states have call predecessors, (51), 51 states have call successors, (51) [2022-04-05 05:29:26,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 410 transitions. [2022-04-05 05:29:26,106 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 410 transitions. Word has length 405 [2022-04-05 05:29:26,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:29:26,106 INFO L478 AbstractCegarLoop]: Abstraction has 409 states and 410 transitions. [2022-04-05 05:29:26,107 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 156 states, 156 states have (on average 1.6987179487179487) internal successors, (265), 155 states have internal predecessors, (265), 101 states have call successors, (103), 3 states have call predecessors, (103), 1 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2022-04-05 05:29:26,107 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 410 transitions. [2022-04-05 05:29:26,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2022-04-05 05:29:26,108 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:29:26,108 INFO L499 BasicCegarLoop]: trace histogram [50, 50, 50, 50, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:29:26,126 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Ended with exit code 0 [2022-04-05 05:29:26,309 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2022-04-05 05:29:26,309 INFO L403 AbstractCegarLoop]: === Iteration 101 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:29:26,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:29:26,309 INFO L85 PathProgramCache]: Analyzing trace with hash -169675615, now seen corresponding path program 98 times [2022-04-05 05:29:26,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:29:26,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440632868] [2022-04-05 05:29:26,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:29:26,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:29:26,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:29:27,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-04-05 05:29:27,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-04-05 05:29:27,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-04-05 05:29:27,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-04-05 05:29:27,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-04-05 05:29:27,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-04-05 05:29:27,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-04-05 05:29:27,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-04-05 05:29:27,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-04-05 05:29:27,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-04-05 05:29:27,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-04-05 05:29:27,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-04-05 05:29:27,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-04-05 05:29:27,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-04-05 05:29:27,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-04-05 05:29:27,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-04-05 05:29:27,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-04-05 05:29:27,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-04-05 05:29:27,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-04-05 05:29:27,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-04-05 05:29:27,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-04-05 05:29:27,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-04-05 05:29:27,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-04-05 05:29:27,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-04-05 05:29:27,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-04-05 05:29:27,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-04-05 05:29:27,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-04-05 05:29:27,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-04-05 05:29:27,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-04-05 05:29:27,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-04-05 05:29:27,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-04-05 05:29:27,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-04-05 05:29:27,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-04-05 05:29:27,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-04-05 05:29:27,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2022-04-05 05:29:27,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-04-05 05:29:27,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-04-05 05:29:27,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-04-05 05:29:27,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-04-05 05:29:27,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-04-05 05:29:27,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-04-05 05:29:27,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-04-05 05:29:27,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2022-04-05 05:29:27,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-04-05 05:29:27,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-04-05 05:29:27,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-04-05 05:29:27,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-04-05 05:29:27,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-04-05 05:29:27,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2022-04-05 05:29:27,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,369 INFO L134 CoverageAnalysis]: Checked inductivity of 9703 backedges. 1323 proven. 3676 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2022-04-05 05:29:27,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:29:27,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440632868] [2022-04-05 05:29:27,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440632868] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:29:27,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081650551] [2022-04-05 05:29:27,369 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 05:29:27,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:29:27,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:29:27,370 INFO L229 MonitoredProcess]: Starting monitored process 100 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:29:27,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2022-04-05 05:29:27,493 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 05:29:27,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:29:27,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 992 conjuncts, 103 conjunts are in the unsatisfiable core [2022-04-05 05:29:27,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:29:28,040 INFO L134 CoverageAnalysis]: Checked inductivity of 9703 backedges. 1373 proven. 3626 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2022-04-05 05:29:28,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:29:28,624 INFO L134 CoverageAnalysis]: Checked inductivity of 9703 backedges. 1373 proven. 3626 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2022-04-05 05:29:28,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1081650551] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:29:28,625 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:29:28,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 55, 55] total 59 [2022-04-05 05:29:28,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469947544] [2022-04-05 05:29:28,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:29:28,625 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-04-05 05:29:28,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:29:28,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-04-05 05:29:28,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1393, Invalid=2029, Unknown=0, NotChecked=0, Total=3422 [2022-04-05 05:29:28,626 INFO L87 Difference]: Start difference. First operand 409 states and 410 transitions. Second operand has 59 states, 59 states have (on average 2.7966101694915255) internal successors, (165), 56 states have internal predecessors, (165), 51 states have call successors, (54), 4 states have call predecessors, (54), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-04-05 05:29:29,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:29:29,884 INFO L93 Difference]: Finished difference Result 422 states and 424 transitions. [2022-04-05 05:29:29,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-04-05 05:29:29,885 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.7966101694915255) internal successors, (165), 56 states have internal predecessors, (165), 51 states have call successors, (54), 4 states have call predecessors, (54), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Word has length 406 [2022-04-05 05:29:29,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:29:29,886 INFO L225 Difference]: With dead ends: 422 [2022-04-05 05:29:29,886 INFO L226 Difference]: Without dead ends: 420 [2022-04-05 05:29:29,888 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1071 GetRequests, 957 SyntacticMatches, 2 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2283 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=4171, Invalid=8711, Unknown=0, NotChecked=0, Total=12882 [2022-04-05 05:29:29,888 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 129 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1181 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 1181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-05 05:29:29,888 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 65 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [261 Valid, 1181 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-05 05:29:29,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2022-04-05 05:29:29,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 416. [2022-04-05 05:29:29,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 310 states have (on average 1.0064516129032257) internal successors, (312), 311 states have internal predecessors, (312), 53 states have call successors, (53), 53 states have call predecessors, (53), 52 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2022-04-05 05:29:29,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 417 transitions. [2022-04-05 05:29:29,938 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 417 transitions. Word has length 406 [2022-04-05 05:29:29,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:29:29,938 INFO L478 AbstractCegarLoop]: Abstraction has 416 states and 417 transitions. [2022-04-05 05:29:29,939 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.7966101694915255) internal successors, (165), 56 states have internal predecessors, (165), 51 states have call successors, (54), 4 states have call predecessors, (54), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-04-05 05:29:29,939 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 417 transitions. [2022-04-05 05:29:29,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2022-04-05 05:29:29,940 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:29:29,940 INFO L499 BasicCegarLoop]: trace histogram [51, 51, 51, 50, 50, 50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:29:29,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Forceful destruction successful, exit code 0 [2022-04-05 05:29:30,158 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100,100 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:29:30,158 INFO L403 AbstractCegarLoop]: === Iteration 102 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:29:30,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:29:30,159 INFO L85 PathProgramCache]: Analyzing trace with hash -2032094887, now seen corresponding path program 99 times [2022-04-05 05:29:30,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:29:30,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557753660] [2022-04-05 05:29:30,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:29:30,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:29:30,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:32,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:29:32,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:32,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-04-05 05:29:32,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:32,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-04-05 05:29:32,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:32,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-04-05 05:29:32,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:32,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-04-05 05:29:32,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:32,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-04-05 05:29:32,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:32,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-04-05 05:29:32,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:32,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-04-05 05:29:32,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:32,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-04-05 05:29:32,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:32,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-04-05 05:29:32,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:32,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-04-05 05:29:32,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:32,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-04-05 05:29:32,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:32,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-04-05 05:29:32,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:32,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-04-05 05:29:32,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:32,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-04-05 05:29:32,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:32,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-04-05 05:29:32,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:32,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-04-05 05:29:32,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:32,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-04-05 05:29:32,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:32,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-04-05 05:29:32,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:32,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-04-05 05:29:32,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:32,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-04-05 05:29:32,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:32,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-04-05 05:29:32,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:32,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-04-05 05:29:32,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:32,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-04-05 05:29:32,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:32,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-04-05 05:29:32,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:32,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-04-05 05:29:32,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:32,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-04-05 05:29:32,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:32,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-04-05 05:29:32,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:32,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-04-05 05:29:32,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:32,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-04-05 05:29:32,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:32,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-04-05 05:29:32,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:32,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-04-05 05:29:32,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:32,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-04-05 05:29:32,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:32,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-04-05 05:29:32,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:32,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-04-05 05:29:32,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:32,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2022-04-05 05:29:32,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:32,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-04-05 05:29:32,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:32,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-04-05 05:29:32,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:32,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-04-05 05:29:32,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:32,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-04-05 05:29:32,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:32,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-04-05 05:29:32,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:32,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-04-05 05:29:32,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:32,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-04-05 05:29:32,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:32,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2022-04-05 05:29:32,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:32,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-04-05 05:29:32,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:32,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-04-05 05:29:32,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:32,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-04-05 05:29:32,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:32,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-04-05 05:29:32,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:32,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-04-05 05:29:32,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:32,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2022-04-05 05:29:32,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:32,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-04-05 05:29:32,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:32,854 INFO L134 CoverageAnalysis]: Checked inductivity of 10050 backedges. 3727 proven. 1423 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2022-04-05 05:29:32,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:29:32,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557753660] [2022-04-05 05:29:32,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557753660] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:29:32,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793821102] [2022-04-05 05:29:32,855 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-05 05:29:32,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:29:32,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:29:32,856 INFO L229 MonitoredProcess]: Starting monitored process 101 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:29:32,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2022-04-05 05:29:33,055 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 51 check-sat command(s) [2022-04-05 05:29:33,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:29:33,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 1006 conjuncts, 104 conjunts are in the unsatisfiable core [2022-04-05 05:29:33,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:29:36,885 INFO L134 CoverageAnalysis]: Checked inductivity of 10050 backedges. 3875 proven. 1275 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2022-04-05 05:29:36,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:29:37,532 INFO L134 CoverageAnalysis]: Checked inductivity of 10050 backedges. 3875 proven. 1275 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2022-04-05 05:29:37,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793821102] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:29:37,532 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:29:37,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 105, 105] total 159 [2022-04-05 05:29:37,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265709651] [2022-04-05 05:29:37,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:29:37,533 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 159 states [2022-04-05 05:29:37,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:29:37,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 159 interpolants. [2022-04-05 05:29:37,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5571, Invalid=19551, Unknown=0, NotChecked=0, Total=25122 [2022-04-05 05:29:37,535 INFO L87 Difference]: Start difference. First operand 416 states and 417 transitions. Second operand has 159 states, 159 states have (on average 1.6981132075471699) internal successors, (270), 158 states have internal predecessors, (270), 103 states have call successors, (105), 3 states have call predecessors, (105), 1 states have return successors, (102), 102 states have call predecessors, (102), 102 states have call successors, (102) [2022-04-05 05:29:41,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:29:41,237 INFO L93 Difference]: Finished difference Result 578 states and 630 transitions. [2022-04-05 05:29:41,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-04-05 05:29:41,237 INFO L78 Accepts]: Start accepts. Automaton has has 159 states, 159 states have (on average 1.6981132075471699) internal successors, (270), 158 states have internal predecessors, (270), 103 states have call successors, (105), 3 states have call predecessors, (105), 1 states have return successors, (102), 102 states have call predecessors, (102), 102 states have call successors, (102) Word has length 413 [2022-04-05 05:29:41,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:29:41,239 INFO L225 Difference]: With dead ends: 578 [2022-04-05 05:29:41,239 INFO L226 Difference]: Without dead ends: 417 [2022-04-05 05:29:41,243 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1135 GetRequests, 874 SyntacticMatches, 1 SemanticMatches, 260 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18959 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=12567, Invalid=55815, Unknown=0, NotChecked=0, Total=68382 [2022-04-05 05:29:41,244 INFO L913 BasicCegarLoop]: 62 mSDtfsCounter, 21 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 2277 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 2492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 2277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-04-05 05:29:41,244 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 104 Invalid, 2492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 2277 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-05 05:29:41,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2022-04-05 05:29:41,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 417. [2022-04-05 05:29:41,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 311 states have (on average 1.0064308681672025) internal successors, (313), 312 states have internal predecessors, (313), 53 states have call successors, (53), 53 states have call predecessors, (53), 52 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2022-04-05 05:29:41,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 418 transitions. [2022-04-05 05:29:41,323 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 418 transitions. Word has length 413 [2022-04-05 05:29:41,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:29:41,323 INFO L478 AbstractCegarLoop]: Abstraction has 417 states and 418 transitions. [2022-04-05 05:29:41,324 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 159 states, 159 states have (on average 1.6981132075471699) internal successors, (270), 158 states have internal predecessors, (270), 103 states have call successors, (105), 3 states have call predecessors, (105), 1 states have return successors, (102), 102 states have call predecessors, (102), 102 states have call successors, (102) [2022-04-05 05:29:41,324 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 418 transitions. [2022-04-05 05:29:41,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2022-04-05 05:29:41,326 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:29:41,326 INFO L499 BasicCegarLoop]: trace histogram [51, 51, 51, 51, 50, 50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:29:41,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Forceful destruction successful, exit code 0 [2022-04-05 05:29:41,539 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101,101 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:29:41,539 INFO L403 AbstractCegarLoop]: === Iteration 103 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:29:41,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:29:41,540 INFO L85 PathProgramCache]: Analyzing trace with hash -793470499, now seen corresponding path program 100 times [2022-04-05 05:29:41,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:29:41,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853858776] [2022-04-05 05:29:41,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:29:41,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:29:41,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:42,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:29:42,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:42,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-04-05 05:29:42,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:42,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-04-05 05:29:42,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:42,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-04-05 05:29:42,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:42,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-04-05 05:29:42,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:42,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-04-05 05:29:42,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:42,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-04-05 05:29:42,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:42,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-04-05 05:29:42,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:42,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-04-05 05:29:42,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:42,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-04-05 05:29:42,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:42,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-04-05 05:29:42,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:42,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-04-05 05:29:42,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:42,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-04-05 05:29:42,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:42,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-04-05 05:29:42,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:42,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-04-05 05:29:42,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:42,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-04-05 05:29:42,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:42,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-04-05 05:29:42,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:42,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-04-05 05:29:42,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:42,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-04-05 05:29:42,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:42,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-04-05 05:29:42,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:42,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-04-05 05:29:42,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:42,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-04-05 05:29:42,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:42,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-04-05 05:29:42,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:42,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-04-05 05:29:42,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:42,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-04-05 05:29:42,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:42,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-04-05 05:29:42,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:42,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-04-05 05:29:42,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:42,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-04-05 05:29:42,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:42,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-04-05 05:29:42,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:42,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-04-05 05:29:42,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:42,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-04-05 05:29:42,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:42,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-04-05 05:29:42,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:42,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-04-05 05:29:42,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:42,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-04-05 05:29:42,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:42,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-04-05 05:29:42,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:42,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-04-05 05:29:42,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:42,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2022-04-05 05:29:42,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:42,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-04-05 05:29:42,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:42,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-04-05 05:29:42,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:42,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-04-05 05:29:42,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:42,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-04-05 05:29:42,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:42,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-04-05 05:29:42,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:42,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2022-04-05 05:29:42,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:42,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-04-05 05:29:42,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:42,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2022-04-05 05:29:42,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:42,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-04-05 05:29:42,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:42,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-04-05 05:29:42,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:42,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-04-05 05:29:42,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:42,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-04-05 05:29:42,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:42,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-04-05 05:29:42,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:42,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2022-04-05 05:29:42,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:42,621 INFO L134 CoverageAnalysis]: Checked inductivity of 10101 backedges. 1375 proven. 3826 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2022-04-05 05:29:42,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:29:42,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853858776] [2022-04-05 05:29:42,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853858776] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:29:42,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540593845] [2022-04-05 05:29:42,621 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-05 05:29:42,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:29:42,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:29:42,623 INFO L229 MonitoredProcess]: Starting monitored process 102 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:29:42,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2022-04-05 05:29:42,805 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-05 05:29:42,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:29:42,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 1011 conjuncts, 105 conjunts are in the unsatisfiable core [2022-04-05 05:29:42,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:29:43,375 INFO L134 CoverageAnalysis]: Checked inductivity of 10101 backedges. 1426 proven. 3775 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2022-04-05 05:29:43,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:29:43,968 INFO L134 CoverageAnalysis]: Checked inductivity of 10101 backedges. 1426 proven. 3775 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2022-04-05 05:29:43,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540593845] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:29:43,968 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:29:43,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 56, 56] total 60 [2022-04-05 05:29:43,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830825030] [2022-04-05 05:29:43,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:29:43,969 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-04-05 05:29:43,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:29:43,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-04-05 05:29:43,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1446, Invalid=2094, Unknown=0, NotChecked=0, Total=3540 [2022-04-05 05:29:43,970 INFO L87 Difference]: Start difference. First operand 417 states and 418 transitions. Second operand has 60 states, 60 states have (on average 2.8) internal successors, (168), 57 states have internal predecessors, (168), 52 states have call successors, (55), 4 states have call predecessors, (55), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-04-05 05:29:45,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:29:45,265 INFO L93 Difference]: Finished difference Result 430 states and 432 transitions. [2022-04-05 05:29:45,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-04-05 05:29:45,266 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 2.8) internal successors, (168), 57 states have internal predecessors, (168), 52 states have call successors, (55), 4 states have call predecessors, (55), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) Word has length 414 [2022-04-05 05:29:45,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:29:45,267 INFO L225 Difference]: With dead ends: 430 [2022-04-05 05:29:45,267 INFO L226 Difference]: Without dead ends: 428 [2022-04-05 05:29:45,268 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1092 GetRequests, 976 SyntacticMatches, 2 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2354 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=4330, Invalid=9010, Unknown=0, NotChecked=0, Total=13340 [2022-04-05 05:29:45,268 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 143 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1175 mSolverCounterSat, 317 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 1492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 317 IncrementalHoareTripleChecker+Valid, 1175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-05 05:29:45,268 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 55 Invalid, 1492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [317 Valid, 1175 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-05 05:29:45,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2022-04-05 05:29:45,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 424. [2022-04-05 05:29:45,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 316 states have (on average 1.0063291139240507) internal successors, (318), 317 states have internal predecessors, (318), 54 states have call successors, (54), 54 states have call predecessors, (54), 53 states have return successors, (53), 52 states have call predecessors, (53), 53 states have call successors, (53) [2022-04-05 05:29:45,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 425 transitions. [2022-04-05 05:29:45,328 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 425 transitions. Word has length 414 [2022-04-05 05:29:45,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:29:45,328 INFO L478 AbstractCegarLoop]: Abstraction has 424 states and 425 transitions. [2022-04-05 05:29:45,328 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 2.8) internal successors, (168), 57 states have internal predecessors, (168), 52 states have call successors, (55), 4 states have call predecessors, (55), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-04-05 05:29:45,328 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 425 transitions. [2022-04-05 05:29:45,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2022-04-05 05:29:45,330 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:29:45,330 INFO L499 BasicCegarLoop]: trace histogram [52, 52, 52, 51, 51, 51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:29:45,347 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Ended with exit code 0 [2022-04-05 05:29:45,530 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2022-04-05 05:29:45,531 INFO L403 AbstractCegarLoop]: === Iteration 104 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:29:45,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:29:45,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1985875811, now seen corresponding path program 101 times [2022-04-05 05:29:45,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:29:45,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513449659] [2022-04-05 05:29:45,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:29:45,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:29:45,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:48,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:29:48,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:48,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-04-05 05:29:48,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:48,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-04-05 05:29:48,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:48,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-04-05 05:29:48,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:48,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-04-05 05:29:48,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:48,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-04-05 05:29:48,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:48,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-04-05 05:29:48,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:48,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-04-05 05:29:48,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:48,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-04-05 05:29:48,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:48,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-04-05 05:29:48,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:48,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-04-05 05:29:48,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:48,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-04-05 05:29:48,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:48,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-04-05 05:29:48,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:48,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-04-05 05:29:48,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:48,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-04-05 05:29:48,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:48,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-04-05 05:29:48,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:48,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-04-05 05:29:48,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:48,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-04-05 05:29:48,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:48,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-04-05 05:29:48,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:48,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-04-05 05:29:48,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:48,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-04-05 05:29:48,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:48,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-04-05 05:29:48,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:48,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-04-05 05:29:48,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:48,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-04-05 05:29:48,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:48,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-04-05 05:29:48,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:48,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-04-05 05:29:48,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:48,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-04-05 05:29:48,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:48,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-04-05 05:29:48,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:48,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-04-05 05:29:48,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:48,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-04-05 05:29:48,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:48,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-04-05 05:29:48,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:48,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-04-05 05:29:48,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:48,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-04-05 05:29:48,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:48,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-04-05 05:29:48,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:48,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-04-05 05:29:48,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:48,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-04-05 05:29:48,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:48,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2022-04-05 05:29:48,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:48,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-04-05 05:29:48,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:48,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-04-05 05:29:48,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:48,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-04-05 05:29:48,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:48,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-04-05 05:29:48,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:48,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-04-05 05:29:48,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:48,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2022-04-05 05:29:48,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:48,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-04-05 05:29:48,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:48,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2022-04-05 05:29:48,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:48,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-04-05 05:29:48,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:48,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-04-05 05:29:48,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:48,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-04-05 05:29:48,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:48,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-04-05 05:29:48,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:48,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-04-05 05:29:48,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:48,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2022-04-05 05:29:48,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:48,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-04-05 05:29:48,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:48,299 INFO L134 CoverageAnalysis]: Checked inductivity of 10455 backedges. 3878 proven. 1477 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2022-04-05 05:29:48,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:29:48,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513449659] [2022-04-05 05:29:48,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513449659] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:29:48,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301340558] [2022-04-05 05:29:48,299 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-05 05:29:48,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:29:48,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:29:48,300 INFO L229 MonitoredProcess]: Starting monitored process 103 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:29:48,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2022-04-05 05:29:48,531 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 52 check-sat command(s) [2022-04-05 05:29:48,531 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:29:48,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 1025 conjuncts, 106 conjunts are in the unsatisfiable core [2022-04-05 05:29:48,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:29:52,497 INFO L134 CoverageAnalysis]: Checked inductivity of 10455 backedges. 4029 proven. 1326 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2022-04-05 05:29:52,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:29:53,166 INFO L134 CoverageAnalysis]: Checked inductivity of 10455 backedges. 4029 proven. 1326 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2022-04-05 05:29:53,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301340558] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:29:53,166 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:29:53,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 107, 107] total 162 [2022-04-05 05:29:53,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960676091] [2022-04-05 05:29:53,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:29:53,180 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 162 states [2022-04-05 05:29:53,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:29:53,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 162 interpolants. [2022-04-05 05:29:53,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5784, Invalid=20298, Unknown=0, NotChecked=0, Total=26082 [2022-04-05 05:29:53,183 INFO L87 Difference]: Start difference. First operand 424 states and 425 transitions. Second operand has 162 states, 162 states have (on average 1.6975308641975309) internal successors, (275), 161 states have internal predecessors, (275), 105 states have call successors, (107), 3 states have call predecessors, (107), 1 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) [2022-04-05 05:29:57,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:29:57,425 INFO L93 Difference]: Finished difference Result 589 states and 642 transitions. [2022-04-05 05:29:57,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2022-04-05 05:29:57,425 INFO L78 Accepts]: Start accepts. Automaton has has 162 states, 162 states have (on average 1.6975308641975309) internal successors, (275), 161 states have internal predecessors, (275), 105 states have call successors, (107), 3 states have call predecessors, (107), 1 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) Word has length 421 [2022-04-05 05:29:57,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:29:57,426 INFO L225 Difference]: With dead ends: 589 [2022-04-05 05:29:57,426 INFO L226 Difference]: Without dead ends: 425 [2022-04-05 05:29:57,429 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1157 GetRequests, 891 SyntacticMatches, 1 SemanticMatches, 265 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19695 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=13047, Invalid=57975, Unknown=0, NotChecked=0, Total=71022 [2022-04-05 05:29:57,429 INFO L913 BasicCegarLoop]: 63 mSDtfsCounter, 21 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 3596 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 3815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 3596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-04-05 05:29:57,429 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 160 Invalid, 3815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 3596 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-04-05 05:29:57,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2022-04-05 05:29:57,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 425. [2022-04-05 05:29:57,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 317 states have (on average 1.0063091482649842) internal successors, (319), 318 states have internal predecessors, (319), 54 states have call successors, (54), 54 states have call predecessors, (54), 53 states have return successors, (53), 52 states have call predecessors, (53), 53 states have call successors, (53) [2022-04-05 05:29:57,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 426 transitions. [2022-04-05 05:29:57,479 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 426 transitions. Word has length 421 [2022-04-05 05:29:57,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:29:57,479 INFO L478 AbstractCegarLoop]: Abstraction has 425 states and 426 transitions. [2022-04-05 05:29:57,479 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 162 states, 162 states have (on average 1.6975308641975309) internal successors, (275), 161 states have internal predecessors, (275), 105 states have call successors, (107), 3 states have call predecessors, (107), 1 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) [2022-04-05 05:29:57,480 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 426 transitions. [2022-04-05 05:29:57,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2022-04-05 05:29:57,481 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:29:57,481 INFO L499 BasicCegarLoop]: trace histogram [52, 52, 52, 52, 51, 51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:29:57,499 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Ended with exit code 0 [2022-04-05 05:29:57,681 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2022-04-05 05:29:57,682 INFO L403 AbstractCegarLoop]: === Iteration 105 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:29:57,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:29:57,682 INFO L85 PathProgramCache]: Analyzing trace with hash -933817055, now seen corresponding path program 102 times [2022-04-05 05:29:57,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:29:57,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542187804] [2022-04-05 05:29:57,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:29:57,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:29:57,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:58,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:29:58,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:58,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-04-05 05:29:58,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:58,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-04-05 05:29:58,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:58,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-04-05 05:29:58,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:58,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-04-05 05:29:58,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:58,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-04-05 05:29:58,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:58,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-04-05 05:29:58,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:58,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-04-05 05:29:58,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:58,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-04-05 05:29:58,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:58,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-04-05 05:29:58,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:58,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-04-05 05:29:58,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:58,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-04-05 05:29:58,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:58,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-04-05 05:29:58,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:58,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-04-05 05:29:58,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:58,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-04-05 05:29:58,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:58,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-04-05 05:29:58,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:58,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-04-05 05:29:58,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:58,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-04-05 05:29:58,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:58,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-04-05 05:29:58,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:58,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-04-05 05:29:58,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:58,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-04-05 05:29:58,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:58,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-04-05 05:29:58,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:58,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-04-05 05:29:58,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:58,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-04-05 05:29:58,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:58,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-04-05 05:29:58,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:58,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-04-05 05:29:58,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:58,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-04-05 05:29:58,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:58,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-04-05 05:29:58,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:58,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-04-05 05:29:58,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:58,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-04-05 05:29:58,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:58,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-04-05 05:29:58,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:58,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-04-05 05:29:58,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:58,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-04-05 05:29:58,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:58,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-04-05 05:29:58,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:58,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-04-05 05:29:58,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:58,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-04-05 05:29:58,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:58,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-04-05 05:29:58,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:58,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2022-04-05 05:29:58,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:58,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-04-05 05:29:58,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:58,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-04-05 05:29:58,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:58,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-04-05 05:29:58,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:58,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-04-05 05:29:58,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:58,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-04-05 05:29:58,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:58,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2022-04-05 05:29:58,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:58,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-04-05 05:29:58,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:58,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2022-04-05 05:29:58,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:58,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-04-05 05:29:58,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:58,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-04-05 05:29:58,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:58,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-04-05 05:29:58,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:58,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-04-05 05:29:58,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:58,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-04-05 05:29:58,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:58,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2022-04-05 05:29:58,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:58,862 INFO L134 CoverageAnalysis]: Checked inductivity of 10507 backedges. 1428 proven. 3979 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2022-04-05 05:29:58,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:29:58,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542187804] [2022-04-05 05:29:58,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542187804] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:29:58,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815538348] [2022-04-05 05:29:58,862 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-05 05:29:58,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:29:58,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:29:58,863 INFO L229 MonitoredProcess]: Starting monitored process 104 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:29:58,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2022-04-05 05:29:59,060 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 52 check-sat command(s) [2022-04-05 05:29:59,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:29:59,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 1030 conjuncts, 107 conjunts are in the unsatisfiable core [2022-04-05 05:29:59,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:29:59,634 INFO L134 CoverageAnalysis]: Checked inductivity of 10507 backedges. 1480 proven. 3927 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2022-04-05 05:29:59,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:30:00,235 INFO L134 CoverageAnalysis]: Checked inductivity of 10507 backedges. 1480 proven. 3927 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2022-04-05 05:30:00,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815538348] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:30:00,236 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:30:00,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 57, 57] total 61 [2022-04-05 05:30:00,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468415709] [2022-04-05 05:30:00,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:30:00,236 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-04-05 05:30:00,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:30:00,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-04-05 05:30:00,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1500, Invalid=2160, Unknown=0, NotChecked=0, Total=3660 [2022-04-05 05:30:00,237 INFO L87 Difference]: Start difference. First operand 425 states and 426 transitions. Second operand has 61 states, 61 states have (on average 2.80327868852459) internal successors, (171), 58 states have internal predecessors, (171), 53 states have call successors, (56), 4 states have call predecessors, (56), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-04-05 05:30:01,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:30:01,547 INFO L93 Difference]: Finished difference Result 438 states and 440 transitions. [2022-04-05 05:30:01,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-04-05 05:30:01,548 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 2.80327868852459) internal successors, (171), 58 states have internal predecessors, (171), 53 states have call successors, (56), 4 states have call predecessors, (56), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) Word has length 422 [2022-04-05 05:30:01,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:30:01,549 INFO L225 Difference]: With dead ends: 438 [2022-04-05 05:30:01,549 INFO L226 Difference]: Without dead ends: 436 [2022-04-05 05:30:01,551 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1113 GetRequests, 995 SyntacticMatches, 2 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2426 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=4492, Invalid=9314, Unknown=0, NotChecked=0, Total=13806 [2022-04-05 05:30:01,551 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 135 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1232 mSolverCounterSat, 271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 1503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 1232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-05 05:30:01,551 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 70 Invalid, 1503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [271 Valid, 1232 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-05 05:30:01,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2022-04-05 05:30:01,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 432. [2022-04-05 05:30:01,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 322 states have (on average 1.0062111801242235) internal successors, (324), 323 states have internal predecessors, (324), 55 states have call successors, (55), 55 states have call predecessors, (55), 54 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2022-04-05 05:30:01,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 433 transitions. [2022-04-05 05:30:01,605 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 433 transitions. Word has length 422 [2022-04-05 05:30:01,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:30:01,605 INFO L478 AbstractCegarLoop]: Abstraction has 432 states and 433 transitions. [2022-04-05 05:30:01,605 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 2.80327868852459) internal successors, (171), 58 states have internal predecessors, (171), 53 states have call successors, (56), 4 states have call predecessors, (56), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-04-05 05:30:01,605 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 433 transitions. [2022-04-05 05:30:01,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2022-04-05 05:30:01,606 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:30:01,607 INFO L499 BasicCegarLoop]: trace histogram [53, 53, 53, 52, 52, 52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:30:01,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Forceful destruction successful, exit code 0 [2022-04-05 05:30:01,807 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,104 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:30:01,807 INFO L403 AbstractCegarLoop]: === Iteration 106 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:30:01,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:30:01,808 INFO L85 PathProgramCache]: Analyzing trace with hash -534839079, now seen corresponding path program 103 times [2022-04-05 05:30:01,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:30:01,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980934922] [2022-04-05 05:30:01,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:30:01,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:30:01,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:04,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:30:04,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:04,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-04-05 05:30:04,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:04,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-04-05 05:30:04,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:04,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-04-05 05:30:04,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:04,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-04-05 05:30:04,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:04,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-04-05 05:30:04,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:04,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-04-05 05:30:04,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:04,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-04-05 05:30:04,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:04,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-04-05 05:30:04,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:04,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-04-05 05:30:04,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:04,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-04-05 05:30:04,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:04,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-04-05 05:30:04,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:04,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-04-05 05:30:04,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:04,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-04-05 05:30:04,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:04,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-04-05 05:30:04,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:04,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-04-05 05:30:04,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:04,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-04-05 05:30:04,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:04,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-04-05 05:30:04,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:04,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-04-05 05:30:04,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:04,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-04-05 05:30:04,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:04,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-04-05 05:30:04,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:04,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-04-05 05:30:04,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:04,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-04-05 05:30:04,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:04,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-04-05 05:30:04,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:04,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-04-05 05:30:04,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:04,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-04-05 05:30:04,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:04,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-04-05 05:30:04,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:04,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-04-05 05:30:04,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:04,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-04-05 05:30:04,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:04,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-04-05 05:30:04,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:04,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-04-05 05:30:04,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:04,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-04-05 05:30:04,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:04,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-04-05 05:30:04,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:04,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-04-05 05:30:04,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:04,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-04-05 05:30:04,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:04,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-04-05 05:30:04,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:04,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-04-05 05:30:04,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:04,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2022-04-05 05:30:04,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:04,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-04-05 05:30:04,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:04,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-04-05 05:30:04,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:04,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-04-05 05:30:04,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:04,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-04-05 05:30:04,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:04,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-04-05 05:30:04,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:04,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2022-04-05 05:30:04,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:04,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-04-05 05:30:04,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:04,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2022-04-05 05:30:04,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:04,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-04-05 05:30:04,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:04,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-04-05 05:30:04,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:04,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-04-05 05:30:04,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:04,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-04-05 05:30:04,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:04,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-04-05 05:30:04,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:04,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2022-04-05 05:30:04,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:04,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-04-05 05:30:04,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:04,662 INFO L134 CoverageAnalysis]: Checked inductivity of 10868 backedges. 4032 proven. 1532 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2022-04-05 05:30:04,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:30:04,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980934922] [2022-04-05 05:30:04,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980934922] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:30:04,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701561564] [2022-04-05 05:30:04,662 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-05 05:30:04,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:30:04,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:30:04,663 INFO L229 MonitoredProcess]: Starting monitored process 105 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:30:04,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2022-04-05 05:30:04,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:04,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 1044 conjuncts, 108 conjunts are in the unsatisfiable core [2022-04-05 05:30:04,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:30:08,848 INFO L134 CoverageAnalysis]: Checked inductivity of 10868 backedges. 4186 proven. 1378 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2022-04-05 05:30:08,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:30:09,509 INFO L134 CoverageAnalysis]: Checked inductivity of 10868 backedges. 4186 proven. 1378 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2022-04-05 05:30:09,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701561564] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:30:09,509 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:30:09,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 109, 109] total 165 [2022-04-05 05:30:09,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829443127] [2022-04-05 05:30:09,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:30:09,510 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 165 states [2022-04-05 05:30:09,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:30:09,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 165 interpolants. [2022-04-05 05:30:09,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6001, Invalid=21059, Unknown=0, NotChecked=0, Total=27060 [2022-04-05 05:30:09,512 INFO L87 Difference]: Start difference. First operand 432 states and 433 transitions. Second operand has 165 states, 165 states have (on average 1.696969696969697) internal successors, (280), 164 states have internal predecessors, (280), 107 states have call successors, (109), 3 states have call predecessors, (109), 1 states have return successors, (106), 106 states have call predecessors, (106), 106 states have call successors, (106) [2022-04-05 05:30:13,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:30:13,630 INFO L93 Difference]: Finished difference Result 600 states and 654 transitions. [2022-04-05 05:30:13,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2022-04-05 05:30:13,631 INFO L78 Accepts]: Start accepts. Automaton has has 165 states, 165 states have (on average 1.696969696969697) internal successors, (280), 164 states have internal predecessors, (280), 107 states have call successors, (109), 3 states have call predecessors, (109), 1 states have return successors, (106), 106 states have call predecessors, (106), 106 states have call successors, (106) Word has length 429 [2022-04-05 05:30:13,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:30:13,632 INFO L225 Difference]: With dead ends: 600 [2022-04-05 05:30:13,632 INFO L226 Difference]: Without dead ends: 433 [2022-04-05 05:30:13,636 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1179 GetRequests, 908 SyntacticMatches, 1 SemanticMatches, 270 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20445 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=13536, Invalid=60176, Unknown=0, NotChecked=0, Total=73712 [2022-04-05 05:30:13,636 INFO L913 BasicCegarLoop]: 64 mSDtfsCounter, 21 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 2957 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 3185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 2957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-04-05 05:30:13,637 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 136 Invalid, 3185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 2957 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-04-05 05:30:13,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2022-04-05 05:30:13,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 433. [2022-04-05 05:30:13,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 323 states have (on average 1.0061919504643964) internal successors, (325), 324 states have internal predecessors, (325), 55 states have call successors, (55), 55 states have call predecessors, (55), 54 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2022-04-05 05:30:13,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 434 transitions. [2022-04-05 05:30:13,695 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 434 transitions. Word has length 429 [2022-04-05 05:30:13,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:30:13,695 INFO L478 AbstractCegarLoop]: Abstraction has 433 states and 434 transitions. [2022-04-05 05:30:13,695 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 165 states, 165 states have (on average 1.696969696969697) internal successors, (280), 164 states have internal predecessors, (280), 107 states have call successors, (109), 3 states have call predecessors, (109), 1 states have return successors, (106), 106 states have call predecessors, (106), 106 states have call successors, (106) [2022-04-05 05:30:13,695 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 434 transitions. [2022-04-05 05:30:13,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-04-05 05:30:13,696 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:30:13,696 INFO L499 BasicCegarLoop]: trace histogram [53, 53, 53, 53, 52, 52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:30:13,714 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Ended with exit code 0 [2022-04-05 05:30:13,897 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,105 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:30:13,897 INFO L403 AbstractCegarLoop]: === Iteration 107 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:30:13,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:30:13,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1397137059, now seen corresponding path program 104 times [2022-04-05 05:30:13,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:30:13,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670453297] [2022-04-05 05:30:13,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:30:13,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:30:13,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:14,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:30:14,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:14,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-04-05 05:30:14,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:14,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-04-05 05:30:14,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:14,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-04-05 05:30:14,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:14,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-04-05 05:30:14,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:14,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-04-05 05:30:14,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:14,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-04-05 05:30:14,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:14,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-04-05 05:30:14,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:14,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-04-05 05:30:14,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:14,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-04-05 05:30:14,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:14,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-04-05 05:30:14,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:14,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-04-05 05:30:14,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:14,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-04-05 05:30:14,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:15,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-04-05 05:30:15,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:15,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-04-05 05:30:15,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:15,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-04-05 05:30:15,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:15,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-04-05 05:30:15,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:15,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-04-05 05:30:15,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:15,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-04-05 05:30:15,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:15,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-04-05 05:30:15,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:15,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-04-05 05:30:15,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:15,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-04-05 05:30:15,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:15,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-04-05 05:30:15,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:15,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-04-05 05:30:15,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:15,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-04-05 05:30:15,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:15,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-04-05 05:30:15,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:15,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-04-05 05:30:15,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:15,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-04-05 05:30:15,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:15,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-04-05 05:30:15,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:15,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-04-05 05:30:15,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:15,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-04-05 05:30:15,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:15,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-04-05 05:30:15,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:15,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-04-05 05:30:15,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:15,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-04-05 05:30:15,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:15,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-04-05 05:30:15,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:15,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-04-05 05:30:15,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:15,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-04-05 05:30:15,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:15,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-04-05 05:30:15,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:15,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-04-05 05:30:15,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:15,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-04-05 05:30:15,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:15,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-04-05 05:30:15,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:15,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-04-05 05:30:15,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:15,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-04-05 05:30:15,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:15,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-04-05 05:30:15,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:15,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2022-04-05 05:30:15,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:15,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-04-05 05:30:15,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:15,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2022-04-05 05:30:15,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:15,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-04-05 05:30:15,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:15,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-04-05 05:30:15,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:15,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-04-05 05:30:15,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:15,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-04-05 05:30:15,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:15,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-04-05 05:30:15,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:15,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2022-04-05 05:30:15,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:15,064 INFO L134 CoverageAnalysis]: Checked inductivity of 10921 backedges. 1482 proven. 4135 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2022-04-05 05:30:15,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:30:15,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670453297] [2022-04-05 05:30:15,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670453297] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:30:15,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215410792] [2022-04-05 05:30:15,064 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 05:30:15,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:30:15,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:30:15,065 INFO L229 MonitoredProcess]: Starting monitored process 106 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:30:15,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2022-04-05 05:30:15,193 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 05:30:15,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:30:15,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 1049 conjuncts, 109 conjunts are in the unsatisfiable core [2022-04-05 05:30:15,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:30:15,776 INFO L134 CoverageAnalysis]: Checked inductivity of 10921 backedges. 1535 proven. 4082 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2022-04-05 05:30:15,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:30:16,380 INFO L134 CoverageAnalysis]: Checked inductivity of 10921 backedges. 1535 proven. 4082 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2022-04-05 05:30:16,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215410792] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:30:16,380 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:30:16,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 58, 58] total 62 [2022-04-05 05:30:16,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721470189] [2022-04-05 05:30:16,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:30:16,381 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-04-05 05:30:16,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:30:16,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-04-05 05:30:16,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1555, Invalid=2227, Unknown=0, NotChecked=0, Total=3782 [2022-04-05 05:30:16,382 INFO L87 Difference]: Start difference. First operand 433 states and 434 transitions. Second operand has 62 states, 62 states have (on average 2.806451612903226) internal successors, (174), 59 states have internal predecessors, (174), 54 states have call successors, (57), 4 states have call predecessors, (57), 1 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2022-04-05 05:30:17,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:30:17,681 INFO L93 Difference]: Finished difference Result 446 states and 448 transitions. [2022-04-05 05:30:17,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-04-05 05:30:17,682 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 2.806451612903226) internal successors, (174), 59 states have internal predecessors, (174), 54 states have call successors, (57), 4 states have call predecessors, (57), 1 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) Word has length 430 [2022-04-05 05:30:17,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:30:17,683 INFO L225 Difference]: With dead ends: 446 [2022-04-05 05:30:17,683 INFO L226 Difference]: Without dead ends: 444 [2022-04-05 05:30:17,684 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1134 GetRequests, 1014 SyntacticMatches, 2 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2499 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=4657, Invalid=9623, Unknown=0, NotChecked=0, Total=14280 [2022-04-05 05:30:17,684 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 143 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1087 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 1363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 1087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-05 05:30:17,684 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 60 Invalid, 1363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 1087 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-05 05:30:17,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2022-04-05 05:30:17,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 440. [2022-04-05 05:30:17,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 328 states have (on average 1.0060975609756098) internal successors, (330), 329 states have internal predecessors, (330), 56 states have call successors, (56), 56 states have call predecessors, (56), 55 states have return successors, (55), 54 states have call predecessors, (55), 55 states have call successors, (55) [2022-04-05 05:30:17,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 441 transitions. [2022-04-05 05:30:17,728 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 441 transitions. Word has length 430 [2022-04-05 05:30:17,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:30:17,729 INFO L478 AbstractCegarLoop]: Abstraction has 440 states and 441 transitions. [2022-04-05 05:30:17,729 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 2.806451612903226) internal successors, (174), 59 states have internal predecessors, (174), 54 states have call successors, (57), 4 states have call predecessors, (57), 1 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2022-04-05 05:30:17,729 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 441 transitions. [2022-04-05 05:30:17,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2022-04-05 05:30:17,730 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:30:17,730 INFO L499 BasicCegarLoop]: trace histogram [54, 54, 54, 53, 53, 53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:30:17,748 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Ended with exit code 0 [2022-04-05 05:30:17,931 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2022-04-05 05:30:17,931 INFO L403 AbstractCegarLoop]: === Iteration 108 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:30:17,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:30:17,931 INFO L85 PathProgramCache]: Analyzing trace with hash -610944739, now seen corresponding path program 105 times [2022-04-05 05:30:17,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:30:17,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134850991] [2022-04-05 05:30:17,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:30:17,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:30:17,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:20,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:30:20,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:20,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-04-05 05:30:20,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:20,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-04-05 05:30:20,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:20,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-04-05 05:30:20,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:20,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-04-05 05:30:20,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:20,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-04-05 05:30:20,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:20,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-04-05 05:30:20,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:20,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-04-05 05:30:20,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:20,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-04-05 05:30:20,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:20,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-04-05 05:30:20,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:20,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-04-05 05:30:20,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:20,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-04-05 05:30:20,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:20,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-04-05 05:30:20,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:20,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-04-05 05:30:20,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:20,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-04-05 05:30:20,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:20,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-04-05 05:30:20,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:20,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-04-05 05:30:20,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:20,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-04-05 05:30:20,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:20,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-04-05 05:30:20,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:20,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-04-05 05:30:20,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:20,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-04-05 05:30:20,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:20,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-04-05 05:30:20,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:20,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-04-05 05:30:20,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:20,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-04-05 05:30:20,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:20,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-04-05 05:30:20,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:20,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-04-05 05:30:20,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:20,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-04-05 05:30:20,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:20,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-04-05 05:30:20,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:20,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-04-05 05:30:20,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:20,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-04-05 05:30:20,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:20,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-04-05 05:30:20,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:20,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-04-05 05:30:20,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:20,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-04-05 05:30:20,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:20,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-04-05 05:30:20,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:20,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-04-05 05:30:20,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:20,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-04-05 05:30:20,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:20,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-04-05 05:30:20,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:20,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-04-05 05:30:20,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:20,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-04-05 05:30:20,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:20,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-04-05 05:30:20,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:20,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-04-05 05:30:20,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:20,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-04-05 05:30:20,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:20,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-04-05 05:30:20,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:20,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-04-05 05:30:20,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:20,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2022-04-05 05:30:20,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:20,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-04-05 05:30:20,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:20,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2022-04-05 05:30:20,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:20,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-04-05 05:30:20,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:20,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-04-05 05:30:20,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:20,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-04-05 05:30:20,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:20,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-04-05 05:30:20,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:20,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-04-05 05:30:20,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:20,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2022-04-05 05:30:20,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:20,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-04-05 05:30:20,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:20,878 INFO L134 CoverageAnalysis]: Checked inductivity of 11289 backedges. 4189 proven. 1588 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2022-04-05 05:30:20,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:30:20,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134850991] [2022-04-05 05:30:20,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134850991] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:30:20,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344263973] [2022-04-05 05:30:20,878 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-05 05:30:20,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:30:20,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:30:20,879 INFO L229 MonitoredProcess]: Starting monitored process 107 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:30:20,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2022-04-05 05:30:21,092 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 54 check-sat command(s) [2022-04-05 05:30:21,092 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:30:21,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 1063 conjuncts, 110 conjunts are in the unsatisfiable core [2022-04-05 05:30:21,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:30:25,438 INFO L134 CoverageAnalysis]: Checked inductivity of 11289 backedges. 4346 proven. 1431 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2022-04-05 05:30:25,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:30:26,124 INFO L134 CoverageAnalysis]: Checked inductivity of 11289 backedges. 4346 proven. 1431 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2022-04-05 05:30:26,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344263973] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:30:26,124 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:30:26,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 111, 111] total 168 [2022-04-05 05:30:26,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824872368] [2022-04-05 05:30:26,124 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:30:26,125 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 168 states [2022-04-05 05:30:26,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:30:26,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 168 interpolants. [2022-04-05 05:30:26,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6222, Invalid=21834, Unknown=0, NotChecked=0, Total=28056 [2022-04-05 05:30:26,127 INFO L87 Difference]: Start difference. First operand 440 states and 441 transitions. Second operand has 168 states, 168 states have (on average 1.6964285714285714) internal successors, (285), 167 states have internal predecessors, (285), 109 states have call successors, (111), 3 states have call predecessors, (111), 1 states have return successors, (108), 108 states have call predecessors, (108), 108 states have call successors, (108) [2022-04-05 05:30:30,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:30:30,599 INFO L93 Difference]: Finished difference Result 611 states and 666 transitions. [2022-04-05 05:30:30,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2022-04-05 05:30:30,599 INFO L78 Accepts]: Start accepts. Automaton has has 168 states, 168 states have (on average 1.6964285714285714) internal successors, (285), 167 states have internal predecessors, (285), 109 states have call successors, (111), 3 states have call predecessors, (111), 1 states have return successors, (108), 108 states have call predecessors, (108), 108 states have call successors, (108) Word has length 437 [2022-04-05 05:30:30,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:30:30,600 INFO L225 Difference]: With dead ends: 611 [2022-04-05 05:30:30,600 INFO L226 Difference]: Without dead ends: 441 [2022-04-05 05:30:30,605 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1201 GetRequests, 925 SyntacticMatches, 1 SemanticMatches, 275 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21209 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=14034, Invalid=62418, Unknown=0, NotChecked=0, Total=76452 [2022-04-05 05:30:30,605 INFO L913 BasicCegarLoop]: 65 mSDtfsCounter, 21 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 3561 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 3793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 3561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-04-05 05:30:30,605 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 152 Invalid, 3793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 3561 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-04-05 05:30:30,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2022-04-05 05:30:30,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 441. [2022-04-05 05:30:30,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 329 states have (on average 1.006079027355623) internal successors, (331), 330 states have internal predecessors, (331), 56 states have call successors, (56), 56 states have call predecessors, (56), 55 states have return successors, (55), 54 states have call predecessors, (55), 55 states have call successors, (55) [2022-04-05 05:30:30,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 442 transitions. [2022-04-05 05:30:30,654 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 442 transitions. Word has length 437 [2022-04-05 05:30:30,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:30:30,654 INFO L478 AbstractCegarLoop]: Abstraction has 441 states and 442 transitions. [2022-04-05 05:30:30,654 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 168 states, 168 states have (on average 1.6964285714285714) internal successors, (285), 167 states have internal predecessors, (285), 109 states have call successors, (111), 3 states have call predecessors, (111), 1 states have return successors, (108), 108 states have call predecessors, (108), 108 states have call successors, (108) [2022-04-05 05:30:30,654 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 442 transitions. [2022-04-05 05:30:30,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2022-04-05 05:30:30,656 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:30:30,656 INFO L499 BasicCegarLoop]: trace histogram [54, 54, 54, 54, 53, 53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:30:30,673 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Ended with exit code 0 [2022-04-05 05:30:30,856 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 107 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2022-04-05 05:30:30,856 INFO L403 AbstractCegarLoop]: === Iteration 109 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:30:30,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:30:30,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1961273951, now seen corresponding path program 106 times [2022-04-05 05:30:30,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:30:30,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119879630] [2022-04-05 05:30:30,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:30:30,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:30:30,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:32,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:30:32,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:32,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-04-05 05:30:32,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:32,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-04-05 05:30:32,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:32,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-04-05 05:30:32,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:32,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-04-05 05:30:32,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:32,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-04-05 05:30:32,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:32,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-04-05 05:30:32,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:32,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-04-05 05:30:32,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:32,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-04-05 05:30:32,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:32,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-04-05 05:30:32,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:32,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-04-05 05:30:32,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:32,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-04-05 05:30:32,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:32,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-04-05 05:30:32,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:32,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-04-05 05:30:32,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:32,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-04-05 05:30:32,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:32,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-04-05 05:30:32,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:32,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-04-05 05:30:32,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:32,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-04-05 05:30:32,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:32,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-04-05 05:30:32,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:32,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-04-05 05:30:32,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:32,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-04-05 05:30:32,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:32,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-04-05 05:30:32,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:32,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-04-05 05:30:32,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:32,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-04-05 05:30:32,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:32,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-04-05 05:30:32,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:32,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-04-05 05:30:32,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:32,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-04-05 05:30:32,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:32,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-04-05 05:30:32,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:32,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-04-05 05:30:32,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:32,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-04-05 05:30:32,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:32,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-04-05 05:30:32,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:32,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-04-05 05:30:32,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:32,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-04-05 05:30:32,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:32,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-04-05 05:30:32,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:32,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-04-05 05:30:32,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:32,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-04-05 05:30:32,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:32,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-04-05 05:30:32,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:32,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2022-04-05 05:30:32,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:32,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-04-05 05:30:32,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:32,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2022-04-05 05:30:32,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:32,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-04-05 05:30:32,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:32,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-04-05 05:30:32,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:32,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-04-05 05:30:32,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:32,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-04-05 05:30:32,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:32,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-04-05 05:30:32,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:32,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2022-04-05 05:30:32,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:32,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-04-05 05:30:32,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:32,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2022-04-05 05:30:32,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:32,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-04-05 05:30:32,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:32,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-04-05 05:30:32,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:32,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-04-05 05:30:32,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:32,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-04-05 05:30:32,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:32,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2022-04-05 05:30:32,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:32,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2022-04-05 05:30:32,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:32,099 INFO L134 CoverageAnalysis]: Checked inductivity of 11343 backedges. 1537 proven. 4294 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2022-04-05 05:30:32,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:30:32,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119879630] [2022-04-05 05:30:32,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119879630] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:30:32,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865145741] [2022-04-05 05:30:32,099 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-05 05:30:32,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:30:32,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:30:32,100 INFO L229 MonitoredProcess]: Starting monitored process 108 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:30:32,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2022-04-05 05:30:32,238 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-05 05:30:32,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:30:32,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 1068 conjuncts, 111 conjunts are in the unsatisfiable core [2022-04-05 05:30:32,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:30:32,835 INFO L134 CoverageAnalysis]: Checked inductivity of 11343 backedges. 1591 proven. 4240 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2022-04-05 05:30:32,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:30:33,455 INFO L134 CoverageAnalysis]: Checked inductivity of 11343 backedges. 1591 proven. 4240 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2022-04-05 05:30:33,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865145741] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:30:33,455 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:30:33,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 59, 59] total 63 [2022-04-05 05:30:33,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997948266] [2022-04-05 05:30:33,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:30:33,456 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-04-05 05:30:33,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:30:33,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-04-05 05:30:33,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1611, Invalid=2295, Unknown=0, NotChecked=0, Total=3906 [2022-04-05 05:30:33,457 INFO L87 Difference]: Start difference. First operand 441 states and 442 transitions. Second operand has 63 states, 63 states have (on average 2.8095238095238093) internal successors, (177), 60 states have internal predecessors, (177), 55 states have call successors, (58), 4 states have call predecessors, (58), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2022-04-05 05:30:34,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:30:34,813 INFO L93 Difference]: Finished difference Result 454 states and 456 transitions. [2022-04-05 05:30:34,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-04-05 05:30:34,814 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 2.8095238095238093) internal successors, (177), 60 states have internal predecessors, (177), 55 states have call successors, (58), 4 states have call predecessors, (58), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) Word has length 438 [2022-04-05 05:30:34,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:30:34,815 INFO L225 Difference]: With dead ends: 454 [2022-04-05 05:30:34,815 INFO L226 Difference]: Without dead ends: 452 [2022-04-05 05:30:34,816 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1155 GetRequests, 1033 SyntacticMatches, 2 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2573 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=4825, Invalid=9937, Unknown=0, NotChecked=0, Total=14762 [2022-04-05 05:30:34,816 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 138 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1108 mSolverCounterSat, 335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 1443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 1108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-05 05:30:34,816 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 45 Invalid, 1443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [335 Valid, 1108 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-05 05:30:34,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2022-04-05 05:30:34,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 448. [2022-04-05 05:30:34,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 334 states have (on average 1.0059880239520957) internal successors, (336), 335 states have internal predecessors, (336), 57 states have call successors, (57), 57 states have call predecessors, (57), 56 states have return successors, (56), 55 states have call predecessors, (56), 56 states have call successors, (56) [2022-04-05 05:30:34,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 449 transitions. [2022-04-05 05:30:34,864 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 449 transitions. Word has length 438 [2022-04-05 05:30:34,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:30:34,864 INFO L478 AbstractCegarLoop]: Abstraction has 448 states and 449 transitions. [2022-04-05 05:30:34,864 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 2.8095238095238093) internal successors, (177), 60 states have internal predecessors, (177), 55 states have call successors, (58), 4 states have call predecessors, (58), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2022-04-05 05:30:34,864 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 449 transitions. [2022-04-05 05:30:34,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2022-04-05 05:30:34,865 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:30:34,866 INFO L499 BasicCegarLoop]: trace histogram [55, 55, 55, 54, 54, 54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:30:34,888 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Forceful destruction successful, exit code 0 [2022-04-05 05:30:35,066 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,108 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:30:35,066 INFO L403 AbstractCegarLoop]: === Iteration 110 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:30:35,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:30:35,067 INFO L85 PathProgramCache]: Analyzing trace with hash 451620953, now seen corresponding path program 107 times [2022-04-05 05:30:35,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:30:35,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186784374] [2022-04-05 05:30:35,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:30:35,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:30:35,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:38,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:30:38,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:38,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-04-05 05:30:38,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:38,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-04-05 05:30:38,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:38,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-04-05 05:30:38,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:38,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-04-05 05:30:38,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:38,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-04-05 05:30:38,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:38,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-04-05 05:30:38,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:38,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-04-05 05:30:38,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:38,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-04-05 05:30:38,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:38,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-04-05 05:30:38,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:38,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-04-05 05:30:38,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:38,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-04-05 05:30:38,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:38,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-04-05 05:30:38,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:38,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-04-05 05:30:38,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:38,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-04-05 05:30:38,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:38,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-04-05 05:30:38,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:38,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-04-05 05:30:38,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:38,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-04-05 05:30:38,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:38,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-04-05 05:30:38,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:38,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-04-05 05:30:38,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:38,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-04-05 05:30:38,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:38,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-04-05 05:30:38,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:38,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-04-05 05:30:38,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:38,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-04-05 05:30:38,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:38,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-04-05 05:30:38,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:38,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-04-05 05:30:38,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:38,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-04-05 05:30:38,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:38,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-04-05 05:30:38,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:38,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-04-05 05:30:38,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:38,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-04-05 05:30:38,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:38,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-04-05 05:30:38,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:38,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-04-05 05:30:38,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:38,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-04-05 05:30:38,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:38,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-04-05 05:30:38,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:38,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-04-05 05:30:38,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:38,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-04-05 05:30:38,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:38,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-04-05 05:30:38,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:38,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2022-04-05 05:30:38,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:38,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-04-05 05:30:38,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:38,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2022-04-05 05:30:38,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:38,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-04-05 05:30:38,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:38,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-04-05 05:30:38,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:38,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-04-05 05:30:38,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:38,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-04-05 05:30:38,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:38,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-04-05 05:30:38,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:38,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2022-04-05 05:30:38,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:38,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-04-05 05:30:38,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:38,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2022-04-05 05:30:38,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:38,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-04-05 05:30:38,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:38,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-04-05 05:30:38,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:38,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-04-05 05:30:38,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:38,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-04-05 05:30:38,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:38,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2022-04-05 05:30:38,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:38,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2022-04-05 05:30:38,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:38,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-04-05 05:30:38,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:38,158 INFO L134 CoverageAnalysis]: Checked inductivity of 11718 backedges. 4349 proven. 1645 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2022-04-05 05:30:38,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:30:38,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186784374] [2022-04-05 05:30:38,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186784374] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:30:38,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658579876] [2022-04-05 05:30:38,159 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-05 05:30:38,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:30:38,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:30:38,160 INFO L229 MonitoredProcess]: Starting monitored process 109 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:30:38,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2022-04-05 05:30:38,357 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 55 check-sat command(s) [2022-04-05 05:30:38,357 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:30:38,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 1082 conjuncts, 112 conjunts are in the unsatisfiable core [2022-04-05 05:30:38,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:30:42,703 INFO L134 CoverageAnalysis]: Checked inductivity of 11718 backedges. 4509 proven. 1485 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2022-04-05 05:30:42,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:30:43,396 INFO L134 CoverageAnalysis]: Checked inductivity of 11718 backedges. 4509 proven. 1485 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2022-04-05 05:30:43,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [658579876] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:30:43,396 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:30:43,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [114, 113, 113] total 171 [2022-04-05 05:30:43,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272777775] [2022-04-05 05:30:43,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:30:43,397 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 171 states [2022-04-05 05:30:43,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:30:43,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 171 interpolants. [2022-04-05 05:30:43,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6447, Invalid=22623, Unknown=0, NotChecked=0, Total=29070 [2022-04-05 05:30:43,400 INFO L87 Difference]: Start difference. First operand 448 states and 449 transitions. Second operand has 171 states, 171 states have (on average 1.695906432748538) internal successors, (290), 170 states have internal predecessors, (290), 111 states have call successors, (113), 3 states have call predecessors, (113), 1 states have return successors, (110), 110 states have call predecessors, (110), 110 states have call successors, (110) [2022-04-05 05:30:47,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:30:47,456 INFO L93 Difference]: Finished difference Result 622 states and 678 transitions. [2022-04-05 05:30:47,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2022-04-05 05:30:47,457 INFO L78 Accepts]: Start accepts. Automaton has has 171 states, 171 states have (on average 1.695906432748538) internal successors, (290), 170 states have internal predecessors, (290), 111 states have call successors, (113), 3 states have call predecessors, (113), 1 states have return successors, (110), 110 states have call predecessors, (110), 110 states have call successors, (110) Word has length 445 [2022-04-05 05:30:47,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:30:47,458 INFO L225 Difference]: With dead ends: 622 [2022-04-05 05:30:47,458 INFO L226 Difference]: Without dead ends: 449 [2022-04-05 05:30:47,462 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1223 GetRequests, 942 SyntacticMatches, 1 SemanticMatches, 280 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21987 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=14541, Invalid=64701, Unknown=0, NotChecked=0, Total=79242 [2022-04-05 05:30:47,462 INFO L913 BasicCegarLoop]: 66 mSDtfsCounter, 21 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1942 mSolverCounterSat, 229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 2171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 229 IncrementalHoareTripleChecker+Valid, 1942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-05 05:30:47,462 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 108 Invalid, 2171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [229 Valid, 1942 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-05 05:30:47,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2022-04-05 05:30:47,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 449. [2022-04-05 05:30:47,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 335 states have (on average 1.0059701492537314) internal successors, (337), 336 states have internal predecessors, (337), 57 states have call successors, (57), 57 states have call predecessors, (57), 56 states have return successors, (56), 55 states have call predecessors, (56), 56 states have call successors, (56) [2022-04-05 05:30:47,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 450 transitions. [2022-04-05 05:30:47,535 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 450 transitions. Word has length 445 [2022-04-05 05:30:47,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:30:47,535 INFO L478 AbstractCegarLoop]: Abstraction has 449 states and 450 transitions. [2022-04-05 05:30:47,536 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 171 states, 171 states have (on average 1.695906432748538) internal successors, (290), 170 states have internal predecessors, (290), 111 states have call successors, (113), 3 states have call predecessors, (113), 1 states have return successors, (110), 110 states have call predecessors, (110), 110 states have call successors, (110) [2022-04-05 05:30:47,536 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 450 transitions. [2022-04-05 05:30:47,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2022-04-05 05:30:47,538 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:30:47,538 INFO L499 BasicCegarLoop]: trace histogram [55, 55, 55, 55, 54, 54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:30:47,563 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Forceful destruction successful, exit code 0 [2022-04-05 05:30:47,762 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,109 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:30:47,763 INFO L403 AbstractCegarLoop]: === Iteration 111 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:30:47,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:30:47,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1101264675, now seen corresponding path program 108 times [2022-04-05 05:30:47,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:30:47,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286855392] [2022-04-05 05:30:47,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:30:47,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:30:47,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:48,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:30:48,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:48,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-04-05 05:30:48,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:48,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-04-05 05:30:48,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:48,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-04-05 05:30:48,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:48,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-04-05 05:30:48,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:48,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-04-05 05:30:48,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:48,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-04-05 05:30:48,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:48,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-04-05 05:30:48,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:48,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-04-05 05:30:48,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:48,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-04-05 05:30:48,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:48,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-04-05 05:30:48,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:48,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-04-05 05:30:48,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:48,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-04-05 05:30:48,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:48,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-04-05 05:30:48,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:48,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-04-05 05:30:48,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:48,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-04-05 05:30:48,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:48,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-04-05 05:30:48,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:48,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-04-05 05:30:48,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:48,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-04-05 05:30:48,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:48,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-04-05 05:30:48,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:48,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-04-05 05:30:48,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:48,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-04-05 05:30:48,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:48,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-04-05 05:30:48,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:48,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-04-05 05:30:48,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:48,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-04-05 05:30:48,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:48,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-04-05 05:30:48,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:48,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-04-05 05:30:48,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:48,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-04-05 05:30:48,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:48,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-04-05 05:30:48,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:48,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-04-05 05:30:48,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:48,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-04-05 05:30:48,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:48,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-04-05 05:30:48,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:48,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-04-05 05:30:48,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:48,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-04-05 05:30:48,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:48,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-04-05 05:30:48,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:48,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-04-05 05:30:48,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:48,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-04-05 05:30:48,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:48,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-04-05 05:30:48,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:48,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2022-04-05 05:30:48,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:48,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-04-05 05:30:48,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:48,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2022-04-05 05:30:48,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:48,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-04-05 05:30:48,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:48,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-04-05 05:30:48,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:48,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-04-05 05:30:48,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:48,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-04-05 05:30:48,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:48,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-04-05 05:30:48,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:48,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2022-04-05 05:30:48,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:48,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-04-05 05:30:48,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:48,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2022-04-05 05:30:48,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:48,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-04-05 05:30:48,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:48,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-04-05 05:30:48,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:49,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-04-05 05:30:49,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:49,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-04-05 05:30:49,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:49,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2022-04-05 05:30:49,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:49,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 435 [2022-04-05 05:30:49,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:49,006 INFO L134 CoverageAnalysis]: Checked inductivity of 11773 backedges. 1593 proven. 4456 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2022-04-05 05:30:49,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:30:49,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286855392] [2022-04-05 05:30:49,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286855392] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:30:49,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723044671] [2022-04-05 05:30:49,006 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-05 05:30:49,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:30:49,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:30:49,007 INFO L229 MonitoredProcess]: Starting monitored process 110 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:30:49,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process [2022-04-05 05:30:49,236 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2022-04-05 05:30:49,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:30:49,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 1087 conjuncts, 113 conjunts are in the unsatisfiable core [2022-04-05 05:30:49,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:30:49,835 INFO L134 CoverageAnalysis]: Checked inductivity of 11773 backedges. 1648 proven. 4401 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2022-04-05 05:30:49,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:30:50,467 INFO L134 CoverageAnalysis]: Checked inductivity of 11773 backedges. 1648 proven. 4401 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2022-04-05 05:30:50,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1723044671] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:30:50,467 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:30:50,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 60, 60] total 64 [2022-04-05 05:30:50,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158299087] [2022-04-05 05:30:50,467 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:30:50,468 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-04-05 05:30:50,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:30:50,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-04-05 05:30:50,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1668, Invalid=2364, Unknown=0, NotChecked=0, Total=4032 [2022-04-05 05:30:50,468 INFO L87 Difference]: Start difference. First operand 449 states and 450 transitions. Second operand has 64 states, 64 states have (on average 2.8125) internal successors, (180), 61 states have internal predecessors, (180), 56 states have call successors, (59), 4 states have call predecessors, (59), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2022-04-05 05:30:51,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:30:51,904 INFO L93 Difference]: Finished difference Result 462 states and 464 transitions. [2022-04-05 05:30:51,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-04-05 05:30:51,905 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.8125) internal successors, (180), 61 states have internal predecessors, (180), 56 states have call successors, (59), 4 states have call predecessors, (59), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) Word has length 446 [2022-04-05 05:30:51,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:30:51,908 INFO L225 Difference]: With dead ends: 462 [2022-04-05 05:30:51,908 INFO L226 Difference]: Without dead ends: 460 [2022-04-05 05:30:51,910 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1176 GetRequests, 1052 SyntacticMatches, 2 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2648 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=4996, Invalid=10256, Unknown=0, NotChecked=0, Total=15252 [2022-04-05 05:30:51,910 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 139 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1289 mSolverCounterSat, 341 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 1630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 341 IncrementalHoareTripleChecker+Valid, 1289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-05 05:30:51,910 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 55 Invalid, 1630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [341 Valid, 1289 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-05 05:30:51,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2022-04-05 05:30:51,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 456. [2022-04-05 05:30:51,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 340 states have (on average 1.0058823529411764) internal successors, (342), 341 states have internal predecessors, (342), 58 states have call successors, (58), 58 states have call predecessors, (58), 57 states have return successors, (57), 56 states have call predecessors, (57), 57 states have call successors, (57) [2022-04-05 05:30:51,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 457 transitions. [2022-04-05 05:30:51,967 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 457 transitions. Word has length 446 [2022-04-05 05:30:51,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:30:51,967 INFO L478 AbstractCegarLoop]: Abstraction has 456 states and 457 transitions. [2022-04-05 05:30:51,968 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 2.8125) internal successors, (180), 61 states have internal predecessors, (180), 56 states have call successors, (59), 4 states have call predecessors, (59), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2022-04-05 05:30:51,968 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 457 transitions. [2022-04-05 05:30:51,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2022-04-05 05:30:51,969 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:30:51,969 INFO L499 BasicCegarLoop]: trace histogram [56, 56, 56, 55, 55, 55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:30:51,986 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Ended with exit code 0 [2022-04-05 05:30:52,169 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable110 [2022-04-05 05:30:52,170 INFO L403 AbstractCegarLoop]: === Iteration 112 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:30:52,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:30:52,170 INFO L85 PathProgramCache]: Analyzing trace with hash -460349027, now seen corresponding path program 109 times [2022-04-05 05:30:52,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:30:52,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843730204] [2022-04-05 05:30:52,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:30:52,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:30:52,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:55,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:30:55,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:55,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-04-05 05:30:55,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:55,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-04-05 05:30:55,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:55,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-04-05 05:30:55,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:55,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-04-05 05:30:55,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:55,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-04-05 05:30:55,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:55,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-04-05 05:30:55,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:55,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-04-05 05:30:55,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:55,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-04-05 05:30:55,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:55,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-04-05 05:30:55,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:55,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-04-05 05:30:55,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:55,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-04-05 05:30:55,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:55,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-04-05 05:30:55,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:55,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-04-05 05:30:55,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:55,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-04-05 05:30:55,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:55,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-04-05 05:30:55,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:55,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-04-05 05:30:55,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:55,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-04-05 05:30:55,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:55,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-04-05 05:30:55,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:55,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-04-05 05:30:55,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:55,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-04-05 05:30:55,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:55,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-04-05 05:30:55,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:55,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-04-05 05:30:55,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:55,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-04-05 05:30:55,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:55,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-04-05 05:30:55,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:55,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-04-05 05:30:55,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:55,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-04-05 05:30:55,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:55,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-04-05 05:30:55,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:55,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-04-05 05:30:55,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:55,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-04-05 05:30:55,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:55,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-04-05 05:30:55,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:55,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-04-05 05:30:55,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:55,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-04-05 05:30:55,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:55,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-04-05 05:30:55,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:55,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-04-05 05:30:55,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:55,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-04-05 05:30:55,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:55,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-04-05 05:30:55,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:55,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-04-05 05:30:55,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:55,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2022-04-05 05:30:55,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:55,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-04-05 05:30:55,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:55,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2022-04-05 05:30:55,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:55,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-04-05 05:30:55,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:55,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-04-05 05:30:55,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:55,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-04-05 05:30:55,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:55,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-04-05 05:30:55,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:55,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-04-05 05:30:55,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:55,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2022-04-05 05:30:55,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:55,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-04-05 05:30:55,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:55,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2022-04-05 05:30:55,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:55,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-04-05 05:30:55,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:55,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-04-05 05:30:55,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:55,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-04-05 05:30:55,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:55,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-04-05 05:30:55,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:55,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2022-04-05 05:30:55,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:55,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 435 [2022-04-05 05:30:55,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:55,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2022-04-05 05:30:55,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:55,375 INFO L134 CoverageAnalysis]: Checked inductivity of 12155 backedges. 4512 proven. 1703 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2022-04-05 05:30:55,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:30:55,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843730204] [2022-04-05 05:30:55,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843730204] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:30:55,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657418108] [2022-04-05 05:30:55,376 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-05 05:30:55,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:30:55,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:30:55,376 INFO L229 MonitoredProcess]: Starting monitored process 111 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:30:55,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2022-04-05 05:30:55,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:55,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 1101 conjuncts, 114 conjunts are in the unsatisfiable core [2022-04-05 05:30:55,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:31:00,079 INFO L134 CoverageAnalysis]: Checked inductivity of 12155 backedges. 4675 proven. 1540 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2022-04-05 05:31:00,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:31:00,778 INFO L134 CoverageAnalysis]: Checked inductivity of 12155 backedges. 4675 proven. 1540 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2022-04-05 05:31:00,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657418108] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:31:00,778 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:31:00,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [116, 115, 115] total 174 [2022-04-05 05:31:00,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431725148] [2022-04-05 05:31:00,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:31:00,779 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 174 states [2022-04-05 05:31:00,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:31:00,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 174 interpolants. [2022-04-05 05:31:00,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6676, Invalid=23426, Unknown=0, NotChecked=0, Total=30102 [2022-04-05 05:31:00,781 INFO L87 Difference]: Start difference. First operand 456 states and 457 transitions. Second operand has 174 states, 174 states have (on average 1.6954022988505748) internal successors, (295), 173 states have internal predecessors, (295), 113 states have call successors, (115), 3 states have call predecessors, (115), 1 states have return successors, (112), 112 states have call predecessors, (112), 112 states have call successors, (112) [2022-04-05 05:31:05,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:31:05,353 INFO L93 Difference]: Finished difference Result 633 states and 690 transitions. [2022-04-05 05:31:05,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2022-04-05 05:31:05,354 INFO L78 Accepts]: Start accepts. Automaton has has 174 states, 174 states have (on average 1.6954022988505748) internal successors, (295), 173 states have internal predecessors, (295), 113 states have call successors, (115), 3 states have call predecessors, (115), 1 states have return successors, (112), 112 states have call predecessors, (112), 112 states have call successors, (112) Word has length 453 [2022-04-05 05:31:05,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:31:05,355 INFO L225 Difference]: With dead ends: 633 [2022-04-05 05:31:05,355 INFO L226 Difference]: Without dead ends: 457 [2022-04-05 05:31:05,360 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1245 GetRequests, 959 SyntacticMatches, 1 SemanticMatches, 285 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22779 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=15057, Invalid=67025, Unknown=0, NotChecked=0, Total=82082 [2022-04-05 05:31:05,360 INFO L913 BasicCegarLoop]: 67 mSDtfsCounter, 21 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 3170 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 3406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 3170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-04-05 05:31:05,360 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 149 Invalid, 3406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 3170 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-04-05 05:31:05,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2022-04-05 05:31:05,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 457. [2022-04-05 05:31:05,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 341 states have (on average 1.0058651026392962) internal successors, (343), 342 states have internal predecessors, (343), 58 states have call successors, (58), 58 states have call predecessors, (58), 57 states have return successors, (57), 56 states have call predecessors, (57), 57 states have call successors, (57) [2022-04-05 05:31:05,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 458 transitions. [2022-04-05 05:31:05,420 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 458 transitions. Word has length 453 [2022-04-05 05:31:05,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:31:05,420 INFO L478 AbstractCegarLoop]: Abstraction has 457 states and 458 transitions. [2022-04-05 05:31:05,420 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 174 states, 174 states have (on average 1.6954022988505748) internal successors, (295), 173 states have internal predecessors, (295), 113 states have call successors, (115), 3 states have call predecessors, (115), 1 states have return successors, (112), 112 states have call predecessors, (112), 112 states have call successors, (112) [2022-04-05 05:31:05,420 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 458 transitions. [2022-04-05 05:31:05,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2022-04-05 05:31:05,422 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:31:05,422 INFO L499 BasicCegarLoop]: trace histogram [56, 56, 56, 56, 55, 55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:31:05,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Forceful destruction successful, exit code 0 [2022-04-05 05:31:05,627 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 111 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2022-04-05 05:31:05,627 INFO L403 AbstractCegarLoop]: === Iteration 113 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:31:05,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:31:05,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1223800353, now seen corresponding path program 110 times [2022-04-05 05:31:05,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:31:05,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011764794] [2022-04-05 05:31:05,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:31:05,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:31:05,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:06,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:31:06,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:06,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-04-05 05:31:06,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:06,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-04-05 05:31:06,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:06,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-04-05 05:31:06,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:06,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-04-05 05:31:06,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:06,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-04-05 05:31:06,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:06,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-04-05 05:31:06,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:06,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-04-05 05:31:06,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:06,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-04-05 05:31:06,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:06,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-04-05 05:31:06,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:06,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-04-05 05:31:06,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:06,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-04-05 05:31:06,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:06,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-04-05 05:31:06,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:06,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-04-05 05:31:06,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:07,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-04-05 05:31:07,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:07,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-04-05 05:31:07,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:07,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-04-05 05:31:07,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:07,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-04-05 05:31:07,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:07,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-04-05 05:31:07,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:07,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-04-05 05:31:07,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:07,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-04-05 05:31:07,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:07,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-04-05 05:31:07,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:07,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-04-05 05:31:07,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:07,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-04-05 05:31:07,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:07,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-04-05 05:31:07,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:07,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-04-05 05:31:07,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:07,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-04-05 05:31:07,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:07,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-04-05 05:31:07,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:07,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-04-05 05:31:07,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:07,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-04-05 05:31:07,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:07,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-04-05 05:31:07,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:07,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-04-05 05:31:07,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:07,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-04-05 05:31:07,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:07,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2022-04-05 05:31:07,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:07,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-04-05 05:31:07,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:07,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-04-05 05:31:07,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:07,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-04-05 05:31:07,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:07,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-04-05 05:31:07,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:07,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-04-05 05:31:07,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:07,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-04-05 05:31:07,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:07,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-04-05 05:31:07,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:07,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2022-04-05 05:31:07,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:07,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-04-05 05:31:07,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:07,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-04-05 05:31:07,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:07,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-04-05 05:31:07,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:07,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-04-05 05:31:07,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:07,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-04-05 05:31:07,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:07,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2022-04-05 05:31:07,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:07,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-04-05 05:31:07,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:07,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2022-04-05 05:31:07,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:07,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-04-05 05:31:07,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:07,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-04-05 05:31:07,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:07,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-04-05 05:31:07,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:07,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-04-05 05:31:07,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:07,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2022-04-05 05:31:07,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:07,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2022-04-05 05:31:07,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:07,056 INFO L134 CoverageAnalysis]: Checked inductivity of 12211 backedges. 1650 proven. 4621 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2022-04-05 05:31:07,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:31:07,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011764794] [2022-04-05 05:31:07,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011764794] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:31:07,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693063272] [2022-04-05 05:31:07,056 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 05:31:07,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:31:07,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:31:07,057 INFO L229 MonitoredProcess]: Starting monitored process 112 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:31:07,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process [2022-04-05 05:31:07,193 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 05:31:07,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:31:07,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 1106 conjuncts, 115 conjunts are in the unsatisfiable core [2022-04-05 05:31:07,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:31:07,828 INFO L134 CoverageAnalysis]: Checked inductivity of 12211 backedges. 1706 proven. 4565 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2022-04-05 05:31:07,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:31:08,464 INFO L134 CoverageAnalysis]: Checked inductivity of 12211 backedges. 1706 proven. 4565 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2022-04-05 05:31:08,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693063272] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:31:08,464 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:31:08,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 61, 61] total 65 [2022-04-05 05:31:08,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469408780] [2022-04-05 05:31:08,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:31:08,465 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-04-05 05:31:08,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:31:08,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-04-05 05:31:08,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1726, Invalid=2434, Unknown=0, NotChecked=0, Total=4160 [2022-04-05 05:31:08,466 INFO L87 Difference]: Start difference. First operand 457 states and 458 transitions. Second operand has 65 states, 65 states have (on average 2.8153846153846156) internal successors, (183), 62 states have internal predecessors, (183), 57 states have call successors, (60), 4 states have call predecessors, (60), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2022-04-05 05:31:09,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:31:09,843 INFO L93 Difference]: Finished difference Result 470 states and 472 transitions. [2022-04-05 05:31:09,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-04-05 05:31:09,844 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 2.8153846153846156) internal successors, (183), 62 states have internal predecessors, (183), 57 states have call successors, (60), 4 states have call predecessors, (60), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) Word has length 454 [2022-04-05 05:31:09,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:31:09,845 INFO L225 Difference]: With dead ends: 470 [2022-04-05 05:31:09,845 INFO L226 Difference]: Without dead ends: 468 [2022-04-05 05:31:09,846 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1197 GetRequests, 1071 SyntacticMatches, 2 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2724 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=5170, Invalid=10580, Unknown=0, NotChecked=0, Total=15750 [2022-04-05 05:31:09,846 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 150 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 291 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 1335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 291 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-05 05:31:09,846 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 50 Invalid, 1335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [291 Valid, 1044 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-05 05:31:09,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2022-04-05 05:31:09,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 464. [2022-04-05 05:31:09,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 346 states have (on average 1.0057803468208093) internal successors, (348), 347 states have internal predecessors, (348), 59 states have call successors, (59), 59 states have call predecessors, (59), 58 states have return successors, (58), 57 states have call predecessors, (58), 58 states have call successors, (58) [2022-04-05 05:31:09,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 465 transitions. [2022-04-05 05:31:09,902 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 465 transitions. Word has length 454 [2022-04-05 05:31:09,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:31:09,902 INFO L478 AbstractCegarLoop]: Abstraction has 464 states and 465 transitions. [2022-04-05 05:31:09,902 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 2.8153846153846156) internal successors, (183), 62 states have internal predecessors, (183), 57 states have call successors, (60), 4 states have call predecessors, (60), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2022-04-05 05:31:09,903 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 465 transitions. [2022-04-05 05:31:09,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2022-04-05 05:31:09,905 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:31:09,905 INFO L499 BasicCegarLoop]: trace histogram [57, 57, 57, 56, 56, 56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:31:09,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Forceful destruction successful, exit code 0 [2022-04-05 05:31:10,129 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2022-04-05 05:31:10,129 INFO L403 AbstractCegarLoop]: === Iteration 114 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:31:10,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:31:10,129 INFO L85 PathProgramCache]: Analyzing trace with hash -75677735, now seen corresponding path program 111 times [2022-04-05 05:31:10,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:31:10,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649031665] [2022-04-05 05:31:10,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:31:10,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:31:10,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:13,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:31:13,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:13,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-04-05 05:31:13,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:13,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-04-05 05:31:13,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:13,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-04-05 05:31:13,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:13,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-04-05 05:31:13,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:13,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-04-05 05:31:13,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:13,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-04-05 05:31:13,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:13,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-04-05 05:31:13,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:13,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-04-05 05:31:13,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:13,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-04-05 05:31:13,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:13,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-04-05 05:31:13,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:13,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-04-05 05:31:13,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:13,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-04-05 05:31:13,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:13,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-04-05 05:31:13,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:13,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-04-05 05:31:13,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:13,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-04-05 05:31:13,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:13,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-04-05 05:31:13,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:13,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-04-05 05:31:13,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:13,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-04-05 05:31:13,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:13,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-04-05 05:31:13,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:13,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-04-05 05:31:13,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:13,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-04-05 05:31:13,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:13,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-04-05 05:31:13,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:13,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-04-05 05:31:13,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:13,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-04-05 05:31:13,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:13,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-04-05 05:31:13,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:13,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-04-05 05:31:13,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:13,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-04-05 05:31:13,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:13,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-04-05 05:31:13,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:13,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-04-05 05:31:13,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:13,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-04-05 05:31:13,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:13,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-04-05 05:31:13,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:13,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-04-05 05:31:13,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:13,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2022-04-05 05:31:13,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:13,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-04-05 05:31:13,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:13,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-04-05 05:31:13,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:13,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-04-05 05:31:13,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:13,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-04-05 05:31:13,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:13,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-04-05 05:31:13,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:13,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-04-05 05:31:13,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:13,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-04-05 05:31:13,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:13,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2022-04-05 05:31:13,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:13,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-04-05 05:31:13,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:13,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-04-05 05:31:13,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:13,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-04-05 05:31:13,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:13,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-04-05 05:31:13,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:13,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-04-05 05:31:13,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:13,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2022-04-05 05:31:13,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:13,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-04-05 05:31:13,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:13,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2022-04-05 05:31:13,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:13,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-04-05 05:31:13,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:13,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-04-05 05:31:13,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:13,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-04-05 05:31:13,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:13,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-04-05 05:31:13,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:13,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2022-04-05 05:31:13,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:13,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2022-04-05 05:31:13,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:13,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2022-04-05 05:31:13,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:13,444 INFO L134 CoverageAnalysis]: Checked inductivity of 12600 backedges. 4678 proven. 1762 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked. [2022-04-05 05:31:13,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:31:13,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649031665] [2022-04-05 05:31:13,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649031665] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:31:13,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775760311] [2022-04-05 05:31:13,445 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-05 05:31:13,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:31:13,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:31:13,446 INFO L229 MonitoredProcess]: Starting monitored process 113 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:31:13,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Waiting until timeout for monitored process [2022-04-05 05:31:13,675 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 57 check-sat command(s) [2022-04-05 05:31:13,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:31:13,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 116 conjunts are in the unsatisfiable core [2022-04-05 05:31:13,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:31:18,294 INFO L134 CoverageAnalysis]: Checked inductivity of 12600 backedges. 4844 proven. 1596 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked. [2022-04-05 05:31:18,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:31:19,031 INFO L134 CoverageAnalysis]: Checked inductivity of 12600 backedges. 4844 proven. 1596 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked. [2022-04-05 05:31:19,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775760311] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:31:19,032 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:31:19,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [118, 117, 117] total 177 [2022-04-05 05:31:19,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087823787] [2022-04-05 05:31:19,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:31:19,033 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 177 states [2022-04-05 05:31:19,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:31:19,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 177 interpolants. [2022-04-05 05:31:19,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6909, Invalid=24243, Unknown=0, NotChecked=0, Total=31152 [2022-04-05 05:31:19,036 INFO L87 Difference]: Start difference. First operand 464 states and 465 transitions. Second operand has 177 states, 177 states have (on average 1.694915254237288) internal successors, (300), 176 states have internal predecessors, (300), 115 states have call successors, (117), 3 states have call predecessors, (117), 1 states have return successors, (114), 114 states have call predecessors, (114), 114 states have call successors, (114) [2022-04-05 05:31:23,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:31:23,615 INFO L93 Difference]: Finished difference Result 644 states and 702 transitions. [2022-04-05 05:31:23,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2022-04-05 05:31:23,616 INFO L78 Accepts]: Start accepts. Automaton has has 177 states, 177 states have (on average 1.694915254237288) internal successors, (300), 176 states have internal predecessors, (300), 115 states have call successors, (117), 3 states have call predecessors, (117), 1 states have return successors, (114), 114 states have call predecessors, (114), 114 states have call successors, (114) Word has length 461 [2022-04-05 05:31:23,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:31:23,617 INFO L225 Difference]: With dead ends: 644 [2022-04-05 05:31:23,617 INFO L226 Difference]: Without dead ends: 465 [2022-04-05 05:31:23,621 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1267 GetRequests, 976 SyntacticMatches, 1 SemanticMatches, 290 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23585 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=15582, Invalid=69390, Unknown=0, NotChecked=0, Total=84972 [2022-04-05 05:31:23,621 INFO L913 BasicCegarLoop]: 68 mSDtfsCounter, 21 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 2619 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 2857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 2619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-05 05:31:23,621 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 120 Invalid, 2857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 2619 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-05 05:31:23,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2022-04-05 05:31:23,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 465. [2022-04-05 05:31:23,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 347 states have (on average 1.005763688760807) internal successors, (349), 348 states have internal predecessors, (349), 59 states have call successors, (59), 59 states have call predecessors, (59), 58 states have return successors, (58), 57 states have call predecessors, (58), 58 states have call successors, (58) [2022-04-05 05:31:23,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 466 transitions. [2022-04-05 05:31:23,672 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 466 transitions. Word has length 461 [2022-04-05 05:31:23,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:31:23,672 INFO L478 AbstractCegarLoop]: Abstraction has 465 states and 466 transitions. [2022-04-05 05:31:23,672 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 177 states, 177 states have (on average 1.694915254237288) internal successors, (300), 176 states have internal predecessors, (300), 115 states have call successors, (117), 3 states have call predecessors, (117), 1 states have return successors, (114), 114 states have call predecessors, (114), 114 states have call successors, (114) [2022-04-05 05:31:23,672 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 466 transitions. [2022-04-05 05:31:23,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2022-04-05 05:31:23,674 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:31:23,674 INFO L499 BasicCegarLoop]: trace histogram [57, 57, 57, 57, 56, 56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:31:23,691 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Ended with exit code 0 [2022-04-05 05:31:23,874 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2022-04-05 05:31:23,875 INFO L403 AbstractCegarLoop]: === Iteration 115 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:31:23,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:31:23,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1445687203, now seen corresponding path program 112 times [2022-04-05 05:31:23,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:31:23,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704872542] [2022-04-05 05:31:23,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:31:23,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:31:23,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:25,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:31:25,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:25,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-04-05 05:31:25,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:25,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-04-05 05:31:25,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:25,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-04-05 05:31:25,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:25,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-04-05 05:31:25,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:25,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-04-05 05:31:25,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:25,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-04-05 05:31:25,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:25,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-04-05 05:31:25,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:25,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-04-05 05:31:25,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:25,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-04-05 05:31:25,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:25,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-04-05 05:31:25,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:25,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-04-05 05:31:25,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:25,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-04-05 05:31:25,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:25,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-04-05 05:31:25,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:25,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-04-05 05:31:25,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:25,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-04-05 05:31:25,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:25,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-04-05 05:31:25,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:25,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-04-05 05:31:25,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:25,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-04-05 05:31:25,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:25,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-04-05 05:31:25,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:25,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-04-05 05:31:25,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:25,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-04-05 05:31:25,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:25,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-04-05 05:31:25,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:25,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-04-05 05:31:25,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:25,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-04-05 05:31:25,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:25,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-04-05 05:31:25,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:25,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-04-05 05:31:25,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:25,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-04-05 05:31:25,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:25,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-04-05 05:31:25,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:25,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-04-05 05:31:25,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:25,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-04-05 05:31:25,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:25,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-04-05 05:31:25,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:25,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-04-05 05:31:25,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:25,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-04-05 05:31:25,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:25,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2022-04-05 05:31:25,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:25,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-04-05 05:31:25,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:25,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-04-05 05:31:25,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:25,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-04-05 05:31:25,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:25,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-04-05 05:31:25,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:25,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-04-05 05:31:25,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:25,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-04-05 05:31:25,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:25,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-04-05 05:31:25,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:25,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2022-04-05 05:31:25,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:25,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-04-05 05:31:25,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:25,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-04-05 05:31:25,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:25,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-04-05 05:31:25,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:25,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-04-05 05:31:25,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:25,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-04-05 05:31:25,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:25,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2022-04-05 05:31:25,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:25,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-04-05 05:31:25,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:25,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2022-04-05 05:31:25,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:25,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2022-04-05 05:31:25,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:25,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-04-05 05:31:25,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:25,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-04-05 05:31:25,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:25,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-04-05 05:31:25,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:25,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2022-04-05 05:31:25,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:25,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 451 [2022-04-05 05:31:25,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:25,206 INFO L134 CoverageAnalysis]: Checked inductivity of 12657 backedges. 1708 proven. 4789 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked. [2022-04-05 05:31:25,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:31:25,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704872542] [2022-04-05 05:31:25,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704872542] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:31:25,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595298623] [2022-04-05 05:31:25,206 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-05 05:31:25,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:31:25,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:31:25,207 INFO L229 MonitoredProcess]: Starting monitored process 114 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:31:25,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process [2022-04-05 05:31:25,356 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-05 05:31:25,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:31:25,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 1125 conjuncts, 117 conjunts are in the unsatisfiable core [2022-04-05 05:31:25,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:31:25,998 INFO L134 CoverageAnalysis]: Checked inductivity of 12657 backedges. 1765 proven. 4732 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked. [2022-04-05 05:31:25,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:31:26,652 INFO L134 CoverageAnalysis]: Checked inductivity of 12657 backedges. 1765 proven. 4732 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked. [2022-04-05 05:31:26,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595298623] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:31:26,653 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:31:26,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 62, 62] total 66 [2022-04-05 05:31:26,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293470134] [2022-04-05 05:31:26,653 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:31:26,653 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-04-05 05:31:26,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:31:26,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-04-05 05:31:26,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1785, Invalid=2505, Unknown=0, NotChecked=0, Total=4290 [2022-04-05 05:31:26,655 INFO L87 Difference]: Start difference. First operand 465 states and 466 transitions. Second operand has 66 states, 66 states have (on average 2.8181818181818183) internal successors, (186), 63 states have internal predecessors, (186), 58 states have call successors, (61), 4 states have call predecessors, (61), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2022-04-05 05:31:28,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:31:28,144 INFO L93 Difference]: Finished difference Result 478 states and 480 transitions. [2022-04-05 05:31:28,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-04-05 05:31:28,144 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.8181818181818183) internal successors, (186), 63 states have internal predecessors, (186), 58 states have call successors, (61), 4 states have call predecessors, (61), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) Word has length 462 [2022-04-05 05:31:28,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:31:28,145 INFO L225 Difference]: With dead ends: 478 [2022-04-05 05:31:28,145 INFO L226 Difference]: Without dead ends: 476 [2022-04-05 05:31:28,149 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1218 GetRequests, 1090 SyntacticMatches, 2 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2801 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=5347, Invalid=10909, Unknown=0, NotChecked=0, Total=16256 [2022-04-05 05:31:28,149 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 143 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1237 mSolverCounterSat, 353 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 1590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 353 IncrementalHoareTripleChecker+Valid, 1237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-05 05:31:28,150 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 60 Invalid, 1590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [353 Valid, 1237 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-05 05:31:28,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2022-04-05 05:31:28,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 472. [2022-04-05 05:31:28,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 352 states have (on average 1.0056818181818181) internal successors, (354), 353 states have internal predecessors, (354), 60 states have call successors, (60), 60 states have call predecessors, (60), 59 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2022-04-05 05:31:28,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 473 transitions. [2022-04-05 05:31:28,238 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 473 transitions. Word has length 462 [2022-04-05 05:31:28,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:31:28,239 INFO L478 AbstractCegarLoop]: Abstraction has 472 states and 473 transitions. [2022-04-05 05:31:28,239 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.8181818181818183) internal successors, (186), 63 states have internal predecessors, (186), 58 states have call successors, (61), 4 states have call predecessors, (61), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2022-04-05 05:31:28,239 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 473 transitions. [2022-04-05 05:31:28,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2022-04-05 05:31:28,241 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:31:28,242 INFO L499 BasicCegarLoop]: trace histogram [58, 58, 58, 57, 57, 57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:31:28,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Forceful destruction successful, exit code 0 [2022-04-05 05:31:28,455 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114,114 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:31:28,455 INFO L403 AbstractCegarLoop]: === Iteration 116 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:31:28,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:31:28,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1364699677, now seen corresponding path program 113 times [2022-04-05 05:31:28,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:31:28,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634502339] [2022-04-05 05:31:28,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:31:28,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:31:28,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:31,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:31:31,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:31,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-04-05 05:31:31,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:31,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-04-05 05:31:31,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:31,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-04-05 05:31:31,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:31,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-04-05 05:31:31,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:31,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-04-05 05:31:31,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:31,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-04-05 05:31:31,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:31,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-04-05 05:31:31,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:31,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-04-05 05:31:31,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:31,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-04-05 05:31:31,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:31,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-04-05 05:31:31,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:31,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-04-05 05:31:31,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:31,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-04-05 05:31:31,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:31,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-04-05 05:31:31,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:31,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-04-05 05:31:31,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:31,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-04-05 05:31:31,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:31,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-04-05 05:31:31,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:31,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-04-05 05:31:31,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:31,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-04-05 05:31:31,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:31,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-04-05 05:31:31,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:31,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-04-05 05:31:31,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:31,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-04-05 05:31:31,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:31,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-04-05 05:31:31,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:31,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-04-05 05:31:31,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:31,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-04-05 05:31:31,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:31,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-04-05 05:31:31,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:31,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-04-05 05:31:31,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:31,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-04-05 05:31:31,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:31,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-04-05 05:31:31,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:31,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-04-05 05:31:31,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:31,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-04-05 05:31:31,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:31,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-04-05 05:31:31,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:31,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-04-05 05:31:31,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:31,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-04-05 05:31:31,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:31,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2022-04-05 05:31:31,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:31,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-04-05 05:31:31,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:31,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-04-05 05:31:31,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:31,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-04-05 05:31:31,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:31,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-04-05 05:31:31,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:31,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-04-05 05:31:31,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:31,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-04-05 05:31:31,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:31,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-04-05 05:31:31,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:31,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2022-04-05 05:31:31,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:31,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-04-05 05:31:31,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:31,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-04-05 05:31:31,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:31,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-04-05 05:31:31,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:31,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-04-05 05:31:31,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:31,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-04-05 05:31:31,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:31,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2022-04-05 05:31:31,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:31,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-04-05 05:31:31,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:31,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2022-04-05 05:31:31,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:31,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2022-04-05 05:31:31,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:31,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-04-05 05:31:31,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:31,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-04-05 05:31:31,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:31,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-04-05 05:31:31,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:31,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2022-04-05 05:31:31,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:31,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 451 [2022-04-05 05:31:31,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:31,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2022-04-05 05:31:31,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:31,826 INFO L134 CoverageAnalysis]: Checked inductivity of 13053 backedges. 4847 proven. 1822 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2022-04-05 05:31:31,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:31:31,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634502339] [2022-04-05 05:31:31,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634502339] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:31:31,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366429486] [2022-04-05 05:31:31,827 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-05 05:31:31,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:31:31,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:31:31,828 INFO L229 MonitoredProcess]: Starting monitored process 115 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:31:31,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Waiting until timeout for monitored process [2022-04-05 05:31:32,039 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 58 check-sat command(s) [2022-04-05 05:31:32,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:31:32,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 1139 conjuncts, 118 conjunts are in the unsatisfiable core [2022-04-05 05:31:32,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:31:36,767 INFO L134 CoverageAnalysis]: Checked inductivity of 13053 backedges. 5016 proven. 1653 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2022-04-05 05:31:36,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:31:37,495 INFO L134 CoverageAnalysis]: Checked inductivity of 13053 backedges. 5016 proven. 1653 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2022-04-05 05:31:37,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [366429486] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:31:37,495 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:31:37,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [120, 119, 119] total 180 [2022-04-05 05:31:37,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656252463] [2022-04-05 05:31:37,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:31:37,496 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 180 states [2022-04-05 05:31:37,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:31:37,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 180 interpolants. [2022-04-05 05:31:37,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7146, Invalid=25074, Unknown=0, NotChecked=0, Total=32220 [2022-04-05 05:31:37,498 INFO L87 Difference]: Start difference. First operand 472 states and 473 transitions. Second operand has 180 states, 180 states have (on average 1.6944444444444444) internal successors, (305), 179 states have internal predecessors, (305), 117 states have call successors, (119), 3 states have call predecessors, (119), 1 states have return successors, (116), 116 states have call predecessors, (116), 116 states have call successors, (116) [2022-04-05 05:31:42,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:31:42,184 INFO L93 Difference]: Finished difference Result 655 states and 714 transitions. [2022-04-05 05:31:42,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2022-04-05 05:31:42,185 INFO L78 Accepts]: Start accepts. Automaton has has 180 states, 180 states have (on average 1.6944444444444444) internal successors, (305), 179 states have internal predecessors, (305), 117 states have call successors, (119), 3 states have call predecessors, (119), 1 states have return successors, (116), 116 states have call predecessors, (116), 116 states have call successors, (116) Word has length 469 [2022-04-05 05:31:42,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:31:42,186 INFO L225 Difference]: With dead ends: 655 [2022-04-05 05:31:42,186 INFO L226 Difference]: Without dead ends: 473 [2022-04-05 05:31:42,190 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1289 GetRequests, 993 SyntacticMatches, 1 SemanticMatches, 295 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24405 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=16116, Invalid=71796, Unknown=0, NotChecked=0, Total=87912 [2022-04-05 05:31:42,191 INFO L913 BasicCegarLoop]: 69 mSDtfsCounter, 21 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 2443 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 2689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 2443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-05 05:31:42,191 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 116 Invalid, 2689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 2443 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-05 05:31:42,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2022-04-05 05:31:42,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 473. [2022-04-05 05:31:42,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 353 states have (on average 1.0056657223796035) internal successors, (355), 354 states have internal predecessors, (355), 60 states have call successors, (60), 60 states have call predecessors, (60), 59 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2022-04-05 05:31:42,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 474 transitions. [2022-04-05 05:31:42,261 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 474 transitions. Word has length 469 [2022-04-05 05:31:42,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:31:42,262 INFO L478 AbstractCegarLoop]: Abstraction has 473 states and 474 transitions. [2022-04-05 05:31:42,262 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 180 states, 180 states have (on average 1.6944444444444444) internal successors, (305), 179 states have internal predecessors, (305), 117 states have call successors, (119), 3 states have call predecessors, (119), 1 states have return successors, (116), 116 states have call predecessors, (116), 116 states have call successors, (116) [2022-04-05 05:31:42,262 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 474 transitions. [2022-04-05 05:31:42,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2022-04-05 05:31:42,264 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:31:42,264 INFO L499 BasicCegarLoop]: trace histogram [58, 58, 58, 58, 57, 57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:31:42,281 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Ended with exit code 0 [2022-04-05 05:31:42,464 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115,115 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:31:42,464 INFO L403 AbstractCegarLoop]: === Iteration 117 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:31:42,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:31:42,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1901578591, now seen corresponding path program 114 times [2022-04-05 05:31:42,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:31:42,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978572175] [2022-04-05 05:31:42,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:31:42,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:31:42,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:43,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:31:43,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:43,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-04-05 05:31:43,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:43,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-04-05 05:31:43,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:43,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-04-05 05:31:43,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:43,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-04-05 05:31:43,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:43,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-04-05 05:31:43,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:43,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-04-05 05:31:43,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:43,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-04-05 05:31:43,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:43,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-04-05 05:31:43,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:43,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-04-05 05:31:43,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:43,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-04-05 05:31:43,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:43,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-04-05 05:31:43,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:43,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-04-05 05:31:43,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:43,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-04-05 05:31:43,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:43,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-04-05 05:31:43,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:43,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-04-05 05:31:43,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:43,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-04-05 05:31:43,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:43,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-04-05 05:31:43,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:43,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-04-05 05:31:43,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:43,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-04-05 05:31:43,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:43,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-04-05 05:31:43,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:43,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-04-05 05:31:43,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:43,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-04-05 05:31:43,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:43,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-04-05 05:31:43,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:43,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-04-05 05:31:43,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:43,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-04-05 05:31:43,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:43,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-04-05 05:31:43,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:43,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-04-05 05:31:43,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:43,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-04-05 05:31:43,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:43,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-04-05 05:31:43,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:43,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-04-05 05:31:43,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:43,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-04-05 05:31:43,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:43,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-04-05 05:31:43,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:43,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-04-05 05:31:43,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:43,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-04-05 05:31:43,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:43,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2022-04-05 05:31:43,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:43,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-04-05 05:31:43,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:43,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-04-05 05:31:43,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:43,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-04-05 05:31:43,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:43,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-04-05 05:31:43,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:43,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-04-05 05:31:43,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:43,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2022-04-05 05:31:43,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:43,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-04-05 05:31:43,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:43,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2022-04-05 05:31:43,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:43,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-04-05 05:31:43,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:43,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-04-05 05:31:43,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:43,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-04-05 05:31:43,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:43,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-04-05 05:31:43,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:43,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-04-05 05:31:43,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:43,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2022-04-05 05:31:43,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:43,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-04-05 05:31:43,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:43,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2022-04-05 05:31:43,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:43,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2022-04-05 05:31:43,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:43,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-04-05 05:31:43,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:43,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-04-05 05:31:43,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:43,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-04-05 05:31:43,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:43,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2022-04-05 05:31:43,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:43,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2022-04-05 05:31:43,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:43,844 INFO L134 CoverageAnalysis]: Checked inductivity of 13111 backedges. 1767 proven. 4960 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2022-04-05 05:31:43,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:31:43,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978572175] [2022-04-05 05:31:43,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978572175] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:31:43,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483833045] [2022-04-05 05:31:43,845 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-05 05:31:43,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:31:43,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:31:43,847 INFO L229 MonitoredProcess]: Starting monitored process 116 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:31:43,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Waiting until timeout for monitored process [2022-04-05 05:31:44,086 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 58 check-sat command(s) [2022-04-05 05:31:44,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:31:44,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 119 conjunts are in the unsatisfiable core [2022-04-05 05:31:44,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:31:44,719 INFO L134 CoverageAnalysis]: Checked inductivity of 13111 backedges. 1825 proven. 4902 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2022-04-05 05:31:44,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:31:45,394 INFO L134 CoverageAnalysis]: Checked inductivity of 13111 backedges. 1825 proven. 4902 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2022-04-05 05:31:45,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483833045] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:31:45,394 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:31:45,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 63, 63] total 67 [2022-04-05 05:31:45,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734142998] [2022-04-05 05:31:45,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:31:45,395 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-04-05 05:31:45,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:31:45,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-04-05 05:31:45,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1845, Invalid=2577, Unknown=0, NotChecked=0, Total=4422 [2022-04-05 05:31:45,396 INFO L87 Difference]: Start difference. First operand 473 states and 474 transitions. Second operand has 67 states, 67 states have (on average 2.8208955223880596) internal successors, (189), 64 states have internal predecessors, (189), 59 states have call successors, (62), 4 states have call predecessors, (62), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2022-04-05 05:31:46,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:31:46,848 INFO L93 Difference]: Finished difference Result 486 states and 488 transitions. [2022-04-05 05:31:46,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-04-05 05:31:46,849 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 2.8208955223880596) internal successors, (189), 64 states have internal predecessors, (189), 59 states have call successors, (62), 4 states have call predecessors, (62), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) Word has length 470 [2022-04-05 05:31:46,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:31:46,850 INFO L225 Difference]: With dead ends: 486 [2022-04-05 05:31:46,850 INFO L226 Difference]: Without dead ends: 484 [2022-04-05 05:31:46,852 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1239 GetRequests, 1109 SyntacticMatches, 2 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2879 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=5527, Invalid=11243, Unknown=0, NotChecked=0, Total=16770 [2022-04-05 05:31:46,852 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 149 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1124 mSolverCounterSat, 301 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 1425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 301 IncrementalHoareTripleChecker+Valid, 1124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-05 05:31:46,852 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 45 Invalid, 1425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [301 Valid, 1124 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-05 05:31:46,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2022-04-05 05:31:46,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 480. [2022-04-05 05:31:46,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 358 states have (on average 1.005586592178771) internal successors, (360), 359 states have internal predecessors, (360), 61 states have call successors, (61), 61 states have call predecessors, (61), 60 states have return successors, (60), 59 states have call predecessors, (60), 60 states have call successors, (60) [2022-04-05 05:31:46,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 481 transitions. [2022-04-05 05:31:46,921 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 481 transitions. Word has length 470 [2022-04-05 05:31:46,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:31:46,921 INFO L478 AbstractCegarLoop]: Abstraction has 480 states and 481 transitions. [2022-04-05 05:31:46,921 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 2.8208955223880596) internal successors, (189), 64 states have internal predecessors, (189), 59 states have call successors, (62), 4 states have call predecessors, (62), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2022-04-05 05:31:46,921 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 481 transitions. [2022-04-05 05:31:46,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2022-04-05 05:31:46,923 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:31:46,924 INFO L499 BasicCegarLoop]: trace histogram [59, 59, 59, 58, 58, 58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:31:46,948 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Forceful destruction successful, exit code 0 [2022-04-05 05:31:47,139 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable116 [2022-04-05 05:31:47,139 INFO L403 AbstractCegarLoop]: === Iteration 118 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:31:47,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:31:47,140 INFO L85 PathProgramCache]: Analyzing trace with hash -2079510695, now seen corresponding path program 115 times [2022-04-05 05:31:47,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:31:47,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179708916] [2022-04-05 05:31:47,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:31:47,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:31:47,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:50,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:31:50,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:50,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-04-05 05:31:50,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:50,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-04-05 05:31:50,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:50,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-04-05 05:31:50,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:50,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-04-05 05:31:50,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:50,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-04-05 05:31:50,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:50,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-04-05 05:31:50,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:50,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-04-05 05:31:50,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:50,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-04-05 05:31:50,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:50,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-04-05 05:31:50,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:50,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-04-05 05:31:50,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:50,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-04-05 05:31:50,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:50,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-04-05 05:31:50,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:50,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-04-05 05:31:50,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:50,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-04-05 05:31:50,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:50,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-04-05 05:31:50,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:50,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-04-05 05:31:50,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:50,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-04-05 05:31:50,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:50,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-04-05 05:31:50,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:50,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-04-05 05:31:50,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:50,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-04-05 05:31:50,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:50,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-04-05 05:31:50,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:50,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-04-05 05:31:50,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:50,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-04-05 05:31:50,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:50,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-04-05 05:31:50,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:50,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-04-05 05:31:50,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:50,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-04-05 05:31:50,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:50,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-04-05 05:31:50,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:50,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-04-05 05:31:50,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:50,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-04-05 05:31:50,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:50,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-04-05 05:31:50,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:50,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-04-05 05:31:50,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:50,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-04-05 05:31:50,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:50,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-04-05 05:31:50,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:50,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-04-05 05:31:50,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:50,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2022-04-05 05:31:50,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:50,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-04-05 05:31:50,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:50,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-04-05 05:31:50,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:50,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-04-05 05:31:50,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:50,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-04-05 05:31:50,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:50,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-04-05 05:31:50,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:50,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2022-04-05 05:31:50,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:50,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-04-05 05:31:50,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:50,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2022-04-05 05:31:50,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:50,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-04-05 05:31:50,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:50,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-04-05 05:31:50,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:50,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-04-05 05:31:50,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:50,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-04-05 05:31:50,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:50,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-04-05 05:31:50,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:50,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2022-04-05 05:31:50,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:50,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-04-05 05:31:50,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:50,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2022-04-05 05:31:50,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:50,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2022-04-05 05:31:50,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:50,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-04-05 05:31:50,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:50,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-04-05 05:31:50,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:50,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-04-05 05:31:50,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:50,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2022-04-05 05:31:50,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:50,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2022-04-05 05:31:50,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:50,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2022-04-05 05:31:50,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:50,649 INFO L134 CoverageAnalysis]: Checked inductivity of 13514 backedges. 5019 proven. 1883 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2022-04-05 05:31:50,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:31:50,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179708916] [2022-04-05 05:31:50,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179708916] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:31:50,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273520639] [2022-04-05 05:31:50,650 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-05 05:31:50,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:31:50,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:31:50,651 INFO L229 MonitoredProcess]: Starting monitored process 117 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:31:50,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Waiting until timeout for monitored process [2022-04-05 05:31:50,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:50,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 1158 conjuncts, 120 conjunts are in the unsatisfiable core [2022-04-05 05:31:50,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:31:55,726 INFO L134 CoverageAnalysis]: Checked inductivity of 13514 backedges. 5191 proven. 1711 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2022-04-05 05:31:55,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:31:56,496 INFO L134 CoverageAnalysis]: Checked inductivity of 13514 backedges. 5191 proven. 1711 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2022-04-05 05:31:56,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273520639] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:31:56,496 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:31:56,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [122, 121, 121] total 183 [2022-04-05 05:31:56,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854676500] [2022-04-05 05:31:56,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:31:56,497 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 183 states [2022-04-05 05:31:56,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:31:56,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 183 interpolants. [2022-04-05 05:31:56,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7387, Invalid=25919, Unknown=0, NotChecked=0, Total=33306 [2022-04-05 05:31:56,499 INFO L87 Difference]: Start difference. First operand 480 states and 481 transitions. Second operand has 183 states, 183 states have (on average 1.6939890710382515) internal successors, (310), 182 states have internal predecessors, (310), 119 states have call successors, (121), 3 states have call predecessors, (121), 1 states have return successors, (118), 118 states have call predecessors, (118), 118 states have call successors, (118) [2022-04-05 05:32:01,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:32:01,555 INFO L93 Difference]: Finished difference Result 666 states and 726 transitions. [2022-04-05 05:32:01,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2022-04-05 05:32:01,556 INFO L78 Accepts]: Start accepts. Automaton has has 183 states, 183 states have (on average 1.6939890710382515) internal successors, (310), 182 states have internal predecessors, (310), 119 states have call successors, (121), 3 states have call predecessors, (121), 1 states have return successors, (118), 118 states have call predecessors, (118), 118 states have call successors, (118) Word has length 477 [2022-04-05 05:32:01,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:32:01,557 INFO L225 Difference]: With dead ends: 666 [2022-04-05 05:32:01,557 INFO L226 Difference]: Without dead ends: 481 [2022-04-05 05:32:01,561 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1311 GetRequests, 1010 SyntacticMatches, 1 SemanticMatches, 300 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25239 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=16659, Invalid=74243, Unknown=0, NotChecked=0, Total=90902 [2022-04-05 05:32:01,561 INFO L913 BasicCegarLoop]: 70 mSDtfsCounter, 21 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 3198 mSolverCounterSat, 245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 3443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 245 IncrementalHoareTripleChecker+Valid, 3198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-04-05 05:32:01,561 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 147 Invalid, 3443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [245 Valid, 3198 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-04-05 05:32:01,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2022-04-05 05:32:01,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 481. [2022-04-05 05:32:01,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 359 states have (on average 1.0055710306406684) internal successors, (361), 360 states have internal predecessors, (361), 61 states have call successors, (61), 61 states have call predecessors, (61), 60 states have return successors, (60), 59 states have call predecessors, (60), 60 states have call successors, (60) [2022-04-05 05:32:01,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 482 transitions. [2022-04-05 05:32:01,618 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 482 transitions. Word has length 477 [2022-04-05 05:32:01,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:32:01,618 INFO L478 AbstractCegarLoop]: Abstraction has 481 states and 482 transitions. [2022-04-05 05:32:01,618 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 183 states, 183 states have (on average 1.6939890710382515) internal successors, (310), 182 states have internal predecessors, (310), 119 states have call successors, (121), 3 states have call predecessors, (121), 1 states have return successors, (118), 118 states have call predecessors, (118), 118 states have call successors, (118) [2022-04-05 05:32:01,618 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 482 transitions. [2022-04-05 05:32:01,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2022-04-05 05:32:01,620 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:32:01,620 INFO L499 BasicCegarLoop]: trace histogram [59, 59, 59, 59, 58, 58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:32:01,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Forceful destruction successful, exit code 0 [2022-04-05 05:32:01,820 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117,117 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:32:01,820 INFO L403 AbstractCegarLoop]: === Iteration 119 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:32:01,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:32:01,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1364916189, now seen corresponding path program 116 times [2022-04-05 05:32:01,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:32:01,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374761931] [2022-04-05 05:32:01,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:32:01,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:32:01,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:03,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:32:03,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:03,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-04-05 05:32:03,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:03,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-04-05 05:32:03,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:03,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-04-05 05:32:03,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:03,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-04-05 05:32:03,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:03,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-04-05 05:32:03,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:03,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-04-05 05:32:03,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:03,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-04-05 05:32:03,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:03,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-04-05 05:32:03,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:03,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-04-05 05:32:03,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:03,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-04-05 05:32:03,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:03,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-04-05 05:32:03,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:03,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-04-05 05:32:03,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:03,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-04-05 05:32:03,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:03,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-04-05 05:32:03,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:03,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-04-05 05:32:03,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:03,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-04-05 05:32:03,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:03,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-04-05 05:32:03,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:03,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-04-05 05:32:03,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:03,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-04-05 05:32:03,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:03,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-04-05 05:32:03,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:03,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-04-05 05:32:03,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:03,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-04-05 05:32:03,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:03,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-04-05 05:32:03,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:03,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-04-05 05:32:03,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:03,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-04-05 05:32:03,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:03,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-04-05 05:32:03,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:03,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-04-05 05:32:03,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:03,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-04-05 05:32:03,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:03,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-04-05 05:32:03,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:03,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-04-05 05:32:03,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:03,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-04-05 05:32:03,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:03,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-04-05 05:32:03,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:03,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-04-05 05:32:03,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:03,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-04-05 05:32:03,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:03,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-04-05 05:32:03,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:03,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2022-04-05 05:32:03,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:03,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-04-05 05:32:03,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:03,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-04-05 05:32:03,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:03,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-04-05 05:32:03,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:03,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-04-05 05:32:03,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:03,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-04-05 05:32:03,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:03,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2022-04-05 05:32:03,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:03,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-04-05 05:32:03,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:03,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2022-04-05 05:32:03,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:03,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-04-05 05:32:03,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:03,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-04-05 05:32:03,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:03,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-04-05 05:32:03,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:03,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-04-05 05:32:03,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:03,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-04-05 05:32:03,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:03,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2022-04-05 05:32:03,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:03,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-04-05 05:32:03,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:03,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2022-04-05 05:32:03,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:03,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2022-04-05 05:32:03,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:03,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-04-05 05:32:03,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:03,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2022-04-05 05:32:03,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:03,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2022-04-05 05:32:03,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:03,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2022-04-05 05:32:03,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:03,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2022-04-05 05:32:03,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:03,266 INFO L134 CoverageAnalysis]: Checked inductivity of 13573 backedges. 1827 proven. 5134 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2022-04-05 05:32:03,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:32:03,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374761931] [2022-04-05 05:32:03,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374761931] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:32:03,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420988986] [2022-04-05 05:32:03,267 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 05:32:03,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:32:03,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:32:03,268 INFO L229 MonitoredProcess]: Starting monitored process 118 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:32:03,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Waiting until timeout for monitored process [2022-04-05 05:32:03,412 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 05:32:03,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:32:03,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 1163 conjuncts, 121 conjunts are in the unsatisfiable core [2022-04-05 05:32:03,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:32:04,093 INFO L134 CoverageAnalysis]: Checked inductivity of 13573 backedges. 1886 proven. 5075 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2022-04-05 05:32:04,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:32:04,780 INFO L134 CoverageAnalysis]: Checked inductivity of 13573 backedges. 1886 proven. 5075 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2022-04-05 05:32:04,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420988986] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:32:04,780 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:32:04,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 64, 64] total 68 [2022-04-05 05:32:04,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530138039] [2022-04-05 05:32:04,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:32:04,781 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-04-05 05:32:04,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:32:04,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-04-05 05:32:04,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1906, Invalid=2650, Unknown=0, NotChecked=0, Total=4556 [2022-04-05 05:32:04,782 INFO L87 Difference]: Start difference. First operand 481 states and 482 transitions. Second operand has 68 states, 68 states have (on average 2.823529411764706) internal successors, (192), 65 states have internal predecessors, (192), 60 states have call successors, (63), 4 states have call predecessors, (63), 1 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2022-04-05 05:32:06,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:32:06,444 INFO L93 Difference]: Finished difference Result 494 states and 496 transitions. [2022-04-05 05:32:06,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-04-05 05:32:06,444 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 2.823529411764706) internal successors, (192), 65 states have internal predecessors, (192), 60 states have call successors, (63), 4 states have call predecessors, (63), 1 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) Word has length 478 [2022-04-05 05:32:06,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:32:06,446 INFO L225 Difference]: With dead ends: 494 [2022-04-05 05:32:06,446 INFO L226 Difference]: Without dead ends: 492 [2022-04-05 05:32:06,447 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1260 GetRequests, 1128 SyntacticMatches, 2 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2958 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=5710, Invalid=11582, Unknown=0, NotChecked=0, Total=17292 [2022-04-05 05:32:06,447 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 152 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1427 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 1733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-05 05:32:06,447 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 80 Invalid, 1733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1427 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-05 05:32:06,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2022-04-05 05:32:06,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 488. [2022-04-05 05:32:06,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 364 states have (on average 1.0054945054945055) internal successors, (366), 365 states have internal predecessors, (366), 62 states have call successors, (62), 62 states have call predecessors, (62), 61 states have return successors, (61), 60 states have call predecessors, (61), 61 states have call successors, (61) [2022-04-05 05:32:06,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 489 transitions. [2022-04-05 05:32:06,507 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 489 transitions. Word has length 478 [2022-04-05 05:32:06,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:32:06,508 INFO L478 AbstractCegarLoop]: Abstraction has 488 states and 489 transitions. [2022-04-05 05:32:06,508 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 2.823529411764706) internal successors, (192), 65 states have internal predecessors, (192), 60 states have call successors, (63), 4 states have call predecessors, (63), 1 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2022-04-05 05:32:06,508 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 489 transitions. [2022-04-05 05:32:06,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2022-04-05 05:32:06,510 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:32:06,510 INFO L499 BasicCegarLoop]: trace histogram [60, 60, 60, 59, 59, 59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:32:06,528 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Ended with exit code 0 [2022-04-05 05:32:06,710 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118,118 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:32:06,710 INFO L403 AbstractCegarLoop]: === Iteration 120 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:32:06,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:32:06,711 INFO L85 PathProgramCache]: Analyzing trace with hash -793390435, now seen corresponding path program 117 times [2022-04-05 05:32:06,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:32:06,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935121901] [2022-04-05 05:32:06,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:32:06,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:32:06,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:10,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:32:10,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:10,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-04-05 05:32:10,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:10,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-04-05 05:32:10,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:10,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-04-05 05:32:10,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:10,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-04-05 05:32:10,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:10,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-04-05 05:32:10,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:10,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-04-05 05:32:10,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:10,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-04-05 05:32:10,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:10,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-04-05 05:32:10,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:10,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-04-05 05:32:10,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:10,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-04-05 05:32:10,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:10,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-04-05 05:32:10,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:10,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-04-05 05:32:10,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:10,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-04-05 05:32:10,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:10,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-04-05 05:32:10,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:10,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-04-05 05:32:10,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:10,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-04-05 05:32:10,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:10,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-04-05 05:32:10,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:10,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-04-05 05:32:10,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:10,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-04-05 05:32:10,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:10,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-04-05 05:32:10,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:10,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-04-05 05:32:10,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:10,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-04-05 05:32:10,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:10,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-04-05 05:32:10,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:10,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-04-05 05:32:10,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:10,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-04-05 05:32:10,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:10,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-04-05 05:32:10,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:10,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-04-05 05:32:10,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:10,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-04-05 05:32:10,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:10,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-04-05 05:32:10,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:10,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-04-05 05:32:10,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:10,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-04-05 05:32:10,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:10,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-04-05 05:32:10,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:10,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-04-05 05:32:10,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:10,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-04-05 05:32:10,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:10,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-04-05 05:32:10,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:10,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2022-04-05 05:32:10,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:10,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-04-05 05:32:10,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:10,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-04-05 05:32:10,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:10,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-04-05 05:32:10,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:10,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-04-05 05:32:10,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:10,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-04-05 05:32:10,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:10,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2022-04-05 05:32:10,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:10,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-04-05 05:32:10,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:10,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2022-04-05 05:32:10,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:10,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-04-05 05:32:10,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:10,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-04-05 05:32:10,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:10,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-04-05 05:32:10,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:10,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-04-05 05:32:10,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:10,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-04-05 05:32:10,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:10,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2022-04-05 05:32:10,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:10,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-04-05 05:32:10,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:10,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2022-04-05 05:32:10,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:10,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2022-04-05 05:32:10,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:10,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-04-05 05:32:10,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:10,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2022-04-05 05:32:10,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:10,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2022-04-05 05:32:10,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:10,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2022-04-05 05:32:10,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:10,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2022-04-05 05:32:10,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:10,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2022-04-05 05:32:10,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:10,389 INFO L134 CoverageAnalysis]: Checked inductivity of 13983 backedges. 5194 proven. 1945 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2022-04-05 05:32:10,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:32:10,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935121901] [2022-04-05 05:32:10,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935121901] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:32:10,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145615003] [2022-04-05 05:32:10,390 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-05 05:32:10,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:32:10,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:32:10,391 INFO L229 MonitoredProcess]: Starting monitored process 119 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:32:10,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Waiting until timeout for monitored process [2022-04-05 05:32:10,660 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 60 check-sat command(s) [2022-04-05 05:32:10,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:32:10,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 1177 conjuncts, 122 conjunts are in the unsatisfiable core [2022-04-05 05:32:10,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:32:15,855 INFO L134 CoverageAnalysis]: Checked inductivity of 13983 backedges. 5369 proven. 1770 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2022-04-05 05:32:15,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:32:16,663 INFO L134 CoverageAnalysis]: Checked inductivity of 13983 backedges. 5369 proven. 1770 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2022-04-05 05:32:16,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145615003] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:32:16,663 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:32:16,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [124, 123, 123] total 186 [2022-04-05 05:32:16,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931412014] [2022-04-05 05:32:16,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:32:16,664 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 186 states [2022-04-05 05:32:16,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:32:16,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 186 interpolants. [2022-04-05 05:32:16,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7632, Invalid=26778, Unknown=0, NotChecked=0, Total=34410 [2022-04-05 05:32:16,668 INFO L87 Difference]: Start difference. First operand 488 states and 489 transitions. Second operand has 186 states, 186 states have (on average 1.6935483870967742) internal successors, (315), 185 states have internal predecessors, (315), 121 states have call successors, (123), 3 states have call predecessors, (123), 1 states have return successors, (120), 120 states have call predecessors, (120), 120 states have call successors, (120) [2022-04-05 05:32:21,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:32:21,935 INFO L93 Difference]: Finished difference Result 677 states and 738 transitions. [2022-04-05 05:32:21,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2022-04-05 05:32:21,936 INFO L78 Accepts]: Start accepts. Automaton has has 186 states, 186 states have (on average 1.6935483870967742) internal successors, (315), 185 states have internal predecessors, (315), 121 states have call successors, (123), 3 states have call predecessors, (123), 1 states have return successors, (120), 120 states have call predecessors, (120), 120 states have call successors, (120) Word has length 485 [2022-04-05 05:32:21,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:32:21,937 INFO L225 Difference]: With dead ends: 677 [2022-04-05 05:32:21,937 INFO L226 Difference]: Without dead ends: 489 [2022-04-05 05:32:21,941 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1333 GetRequests, 1027 SyntacticMatches, 1 SemanticMatches, 305 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26087 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=17211, Invalid=76731, Unknown=0, NotChecked=0, Total=93942 [2022-04-05 05:32:21,941 INFO L913 BasicCegarLoop]: 71 mSDtfsCounter, 21 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 3178 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 3432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 3178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-04-05 05:32:21,941 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 143 Invalid, 3432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 3178 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-04-05 05:32:21,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2022-04-05 05:32:21,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 489. [2022-04-05 05:32:21,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 365 states have (on average 1.0054794520547945) internal successors, (367), 366 states have internal predecessors, (367), 62 states have call successors, (62), 62 states have call predecessors, (62), 61 states have return successors, (61), 60 states have call predecessors, (61), 61 states have call successors, (61) [2022-04-05 05:32:21,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 490 transitions. [2022-04-05 05:32:21,999 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 490 transitions. Word has length 485 [2022-04-05 05:32:21,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:32:21,999 INFO L478 AbstractCegarLoop]: Abstraction has 489 states and 490 transitions. [2022-04-05 05:32:22,000 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 186 states, 186 states have (on average 1.6935483870967742) internal successors, (315), 185 states have internal predecessors, (315), 121 states have call successors, (123), 3 states have call predecessors, (123), 1 states have return successors, (120), 120 states have call predecessors, (120), 120 states have call successors, (120) [2022-04-05 05:32:22,000 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 490 transitions. [2022-04-05 05:32:22,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2022-04-05 05:32:22,001 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:32:22,001 INFO L499 BasicCegarLoop]: trace histogram [60, 60, 60, 60, 59, 59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:32:22,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Forceful destruction successful, exit code 0 [2022-04-05 05:32:22,202 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable119 [2022-04-05 05:32:22,202 INFO L403 AbstractCegarLoop]: === Iteration 121 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:32:22,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:32:22,202 INFO L85 PathProgramCache]: Analyzing trace with hash -352004319, now seen corresponding path program 118 times [2022-04-05 05:32:22,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:32:22,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411799216] [2022-04-05 05:32:22,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:32:22,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:32:22,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:23,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:32:23,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:23,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-04-05 05:32:23,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:23,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-04-05 05:32:23,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:23,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-04-05 05:32:23,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:23,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-04-05 05:32:23,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:23,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-04-05 05:32:23,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:23,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-04-05 05:32:23,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:23,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-04-05 05:32:23,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:23,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-04-05 05:32:23,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:23,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-04-05 05:32:23,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:23,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-04-05 05:32:23,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:23,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-04-05 05:32:23,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:23,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-04-05 05:32:23,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:23,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-04-05 05:32:23,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:23,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-04-05 05:32:23,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:23,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-04-05 05:32:23,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:23,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-04-05 05:32:23,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:23,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-04-05 05:32:23,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:23,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-04-05 05:32:23,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:23,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-04-05 05:32:23,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:23,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-04-05 05:32:23,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:23,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-04-05 05:32:23,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:23,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-04-05 05:32:23,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:23,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-04-05 05:32:23,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:23,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-04-05 05:32:23,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:23,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-04-05 05:32:23,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:23,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-04-05 05:32:23,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:23,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-04-05 05:32:23,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:23,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-04-05 05:32:23,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:23,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-04-05 05:32:23,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:23,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-04-05 05:32:23,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:23,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-04-05 05:32:23,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:23,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-04-05 05:32:23,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:23,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-04-05 05:32:23,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:23,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-04-05 05:32:23,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:23,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-04-05 05:32:23,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:23,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-04-05 05:32:23,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:23,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-04-05 05:32:23,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:23,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-04-05 05:32:23,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:23,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-04-05 05:32:23,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:23,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-04-05 05:32:23,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:23,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-04-05 05:32:23,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:23,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-04-05 05:32:23,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:23,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2022-04-05 05:32:23,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:23,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-04-05 05:32:23,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:23,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2022-04-05 05:32:23,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:23,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-04-05 05:32:23,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:23,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-04-05 05:32:23,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:23,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-04-05 05:32:23,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:23,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-04-05 05:32:23,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:23,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-04-05 05:32:23,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:23,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2022-04-05 05:32:23,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:23,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-04-05 05:32:23,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:23,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2022-04-05 05:32:23,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:23,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2022-04-05 05:32:23,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:23,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2022-04-05 05:32:23,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:23,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2022-04-05 05:32:23,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:23,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2022-04-05 05:32:23,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:23,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2022-04-05 05:32:23,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:23,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2022-04-05 05:32:23,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:23,686 INFO L134 CoverageAnalysis]: Checked inductivity of 14043 backedges. 1888 proven. 5311 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2022-04-05 05:32:23,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:32:23,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411799216] [2022-04-05 05:32:23,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411799216] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:32:23,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923151684] [2022-04-05 05:32:23,687 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-05 05:32:23,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:32:23,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:32:23,688 INFO L229 MonitoredProcess]: Starting monitored process 120 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:32:23,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Waiting until timeout for monitored process [2022-04-05 05:32:23,854 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-05 05:32:23,854 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:32:23,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 1182 conjuncts, 123 conjunts are in the unsatisfiable core [2022-04-05 05:32:23,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:32:24,544 INFO L134 CoverageAnalysis]: Checked inductivity of 14043 backedges. 1948 proven. 5251 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2022-04-05 05:32:24,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:32:25,269 INFO L134 CoverageAnalysis]: Checked inductivity of 14043 backedges. 1948 proven. 5251 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2022-04-05 05:32:25,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923151684] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:32:25,270 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:32:25,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 65, 65] total 69 [2022-04-05 05:32:25,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763256326] [2022-04-05 05:32:25,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:32:25,270 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-04-05 05:32:25,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:32:25,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-04-05 05:32:25,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1968, Invalid=2724, Unknown=0, NotChecked=0, Total=4692 [2022-04-05 05:32:25,271 INFO L87 Difference]: Start difference. First operand 489 states and 490 transitions. Second operand has 69 states, 69 states have (on average 2.8260869565217392) internal successors, (195), 66 states have internal predecessors, (195), 61 states have call successors, (64), 4 states have call predecessors, (64), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2022-04-05 05:32:26,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:32:26,877 INFO L93 Difference]: Finished difference Result 502 states and 504 transitions. [2022-04-05 05:32:26,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-04-05 05:32:26,878 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 2.8260869565217392) internal successors, (195), 66 states have internal predecessors, (195), 61 states have call successors, (64), 4 states have call predecessors, (64), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) Word has length 486 [2022-04-05 05:32:26,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:32:26,879 INFO L225 Difference]: With dead ends: 502 [2022-04-05 05:32:26,879 INFO L226 Difference]: Without dead ends: 500 [2022-04-05 05:32:26,880 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1281 GetRequests, 1147 SyntacticMatches, 2 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3038 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=5896, Invalid=11926, Unknown=0, NotChecked=0, Total=17822 [2022-04-05 05:32:26,880 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 160 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1111 mSolverCounterSat, 311 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 1422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 311 IncrementalHoareTripleChecker+Valid, 1111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-05 05:32:26,880 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 55 Invalid, 1422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [311 Valid, 1111 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-05 05:32:26,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2022-04-05 05:32:26,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 496. [2022-04-05 05:32:26,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 370 states have (on average 1.0054054054054054) internal successors, (372), 371 states have internal predecessors, (372), 63 states have call successors, (63), 63 states have call predecessors, (63), 62 states have return successors, (62), 61 states have call predecessors, (62), 62 states have call successors, (62) [2022-04-05 05:32:26,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 497 transitions. [2022-04-05 05:32:26,941 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 497 transitions. Word has length 486 [2022-04-05 05:32:26,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:32:26,942 INFO L478 AbstractCegarLoop]: Abstraction has 496 states and 497 transitions. [2022-04-05 05:32:26,942 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 2.8260869565217392) internal successors, (195), 66 states have internal predecessors, (195), 61 states have call successors, (64), 4 states have call predecessors, (64), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2022-04-05 05:32:26,942 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 497 transitions. [2022-04-05 05:32:26,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2022-04-05 05:32:26,945 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:32:26,945 INFO L499 BasicCegarLoop]: trace histogram [61, 61, 61, 60, 60, 60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:32:26,966 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Ended with exit code 0 [2022-04-05 05:32:27,155 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,120 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:32:27,155 INFO L403 AbstractCegarLoop]: === Iteration 122 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:32:27,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:32:27,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1959984857, now seen corresponding path program 119 times [2022-04-05 05:32:27,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:32:27,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112846273] [2022-04-05 05:32:27,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:32:27,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:32:27,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:30,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:32:30,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:30,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-04-05 05:32:30,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:30,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-04-05 05:32:30,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:30,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-04-05 05:32:30,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:30,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-04-05 05:32:30,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:30,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-04-05 05:32:30,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:30,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-04-05 05:32:30,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:30,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-04-05 05:32:30,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:30,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-04-05 05:32:30,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:30,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-04-05 05:32:30,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:30,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-04-05 05:32:30,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:30,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-04-05 05:32:30,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:30,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-04-05 05:32:30,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:30,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-04-05 05:32:30,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:30,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-04-05 05:32:30,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:30,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-04-05 05:32:30,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:30,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-04-05 05:32:30,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:30,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-04-05 05:32:30,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:30,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-04-05 05:32:30,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:30,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-04-05 05:32:30,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:30,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-04-05 05:32:30,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:30,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-04-05 05:32:30,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:30,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-04-05 05:32:30,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:30,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-04-05 05:32:30,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:30,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-04-05 05:32:30,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:30,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-04-05 05:32:30,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:30,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-04-05 05:32:30,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:30,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-04-05 05:32:30,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:30,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-04-05 05:32:30,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:30,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-04-05 05:32:30,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:30,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-04-05 05:32:30,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:30,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-04-05 05:32:30,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:30,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-04-05 05:32:30,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:30,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-04-05 05:32:30,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:30,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-04-05 05:32:30,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:30,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-04-05 05:32:30,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:30,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-04-05 05:32:30,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:30,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-04-05 05:32:30,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:30,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-04-05 05:32:30,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:30,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-04-05 05:32:30,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:30,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-04-05 05:32:30,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:30,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-04-05 05:32:30,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:30,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-04-05 05:32:30,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:30,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2022-04-05 05:32:30,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:30,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-04-05 05:32:30,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:30,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2022-04-05 05:32:30,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:30,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-04-05 05:32:30,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:30,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-04-05 05:32:30,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:30,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-04-05 05:32:30,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:30,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-04-05 05:32:30,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:30,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-04-05 05:32:30,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:30,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2022-04-05 05:32:30,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:30,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-04-05 05:32:30,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:30,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2022-04-05 05:32:30,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:30,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2022-04-05 05:32:30,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:30,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2022-04-05 05:32:30,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:30,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2022-04-05 05:32:30,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:30,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2022-04-05 05:32:30,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:30,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2022-04-05 05:32:30,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:30,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2022-04-05 05:32:30,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:30,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2022-04-05 05:32:30,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:30,964 INFO L134 CoverageAnalysis]: Checked inductivity of 14460 backedges. 5372 proven. 2008 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2022-04-05 05:32:30,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:32:30,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112846273] [2022-04-05 05:32:30,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112846273] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:32:30,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423199646] [2022-04-05 05:32:30,964 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-05 05:32:30,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:32:30,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:32:30,965 INFO L229 MonitoredProcess]: Starting monitored process 121 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:32:30,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Waiting until timeout for monitored process [2022-04-05 05:32:31,217 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 61 check-sat command(s) [2022-04-05 05:32:31,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:32:31,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 1196 conjuncts, 124 conjunts are in the unsatisfiable core [2022-04-05 05:32:31,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:32:36,436 INFO L134 CoverageAnalysis]: Checked inductivity of 14460 backedges. 5550 proven. 1830 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2022-04-05 05:32:36,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:32:37,210 INFO L134 CoverageAnalysis]: Checked inductivity of 14460 backedges. 5550 proven. 1830 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2022-04-05 05:32:37,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423199646] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:32:37,211 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:32:37,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [126, 125, 125] total 189 [2022-04-05 05:32:37,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962778541] [2022-04-05 05:32:37,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:32:37,212 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 189 states [2022-04-05 05:32:37,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:32:37,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 189 interpolants. [2022-04-05 05:32:37,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7881, Invalid=27651, Unknown=0, NotChecked=0, Total=35532 [2022-04-05 05:32:37,215 INFO L87 Difference]: Start difference. First operand 496 states and 497 transitions. Second operand has 189 states, 189 states have (on average 1.693121693121693) internal successors, (320), 188 states have internal predecessors, (320), 123 states have call successors, (125), 3 states have call predecessors, (125), 1 states have return successors, (122), 122 states have call predecessors, (122), 122 states have call successors, (122) [2022-04-05 05:32:42,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:32:42,297 INFO L93 Difference]: Finished difference Result 688 states and 750 transitions. [2022-04-05 05:32:42,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2022-04-05 05:32:42,297 INFO L78 Accepts]: Start accepts. Automaton has has 189 states, 189 states have (on average 1.693121693121693) internal successors, (320), 188 states have internal predecessors, (320), 123 states have call successors, (125), 3 states have call predecessors, (125), 1 states have return successors, (122), 122 states have call predecessors, (122), 122 states have call successors, (122) Word has length 493 [2022-04-05 05:32:42,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:32:42,299 INFO L225 Difference]: With dead ends: 688 [2022-04-05 05:32:42,299 INFO L226 Difference]: Without dead ends: 497 [2022-04-05 05:32:42,303 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1355 GetRequests, 1044 SyntacticMatches, 1 SemanticMatches, 310 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26949 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=17772, Invalid=79260, Unknown=0, NotChecked=0, Total=97032 [2022-04-05 05:32:42,303 INFO L913 BasicCegarLoop]: 72 mSDtfsCounter, 21 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 2545 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 2799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 2545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-05 05:32:42,303 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 129 Invalid, 2799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 2545 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-05 05:32:42,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2022-04-05 05:32:42,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 497. [2022-04-05 05:32:42,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 371 states have (on average 1.005390835579515) internal successors, (373), 372 states have internal predecessors, (373), 63 states have call successors, (63), 63 states have call predecessors, (63), 62 states have return successors, (62), 61 states have call predecessors, (62), 62 states have call successors, (62) [2022-04-05 05:32:42,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 498 transitions. [2022-04-05 05:32:42,362 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 498 transitions. Word has length 493 [2022-04-05 05:32:42,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:32:42,362 INFO L478 AbstractCegarLoop]: Abstraction has 497 states and 498 transitions. [2022-04-05 05:32:42,362 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 189 states, 189 states have (on average 1.693121693121693) internal successors, (320), 188 states have internal predecessors, (320), 123 states have call successors, (125), 3 states have call predecessors, (125), 1 states have return successors, (122), 122 states have call predecessors, (122), 122 states have call successors, (122) [2022-04-05 05:32:42,362 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 498 transitions. [2022-04-05 05:32:42,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2022-04-05 05:32:42,364 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:32:42,364 INFO L499 BasicCegarLoop]: trace histogram [61, 61, 61, 61, 60, 60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:32:42,382 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Ended with exit code 0 [2022-04-05 05:32:42,564 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,121 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:32:42,564 INFO L403 AbstractCegarLoop]: === Iteration 123 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:32:42,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:32:42,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1428635485, now seen corresponding path program 120 times [2022-04-05 05:32:42,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:32:42,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076081857] [2022-04-05 05:32:42,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:32:42,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:32:42,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:43,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:32:43,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:43,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-04-05 05:32:43,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:43,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-04-05 05:32:43,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:43,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-04-05 05:32:43,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:43,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-04-05 05:32:43,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:43,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-04-05 05:32:43,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:43,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-04-05 05:32:43,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:43,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-04-05 05:32:43,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:43,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-04-05 05:32:43,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:43,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-04-05 05:32:43,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:43,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-04-05 05:32:44,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:44,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-04-05 05:32:44,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:44,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-04-05 05:32:44,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:44,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-04-05 05:32:44,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:44,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-04-05 05:32:44,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:44,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-04-05 05:32:44,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:44,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-04-05 05:32:44,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:44,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-04-05 05:32:44,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:44,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-04-05 05:32:44,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:44,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-04-05 05:32:44,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:44,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-04-05 05:32:44,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:44,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-04-05 05:32:44,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:44,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-04-05 05:32:44,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:44,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-04-05 05:32:44,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:44,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-04-05 05:32:44,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:44,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-04-05 05:32:44,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:44,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-04-05 05:32:44,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:44,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-04-05 05:32:44,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:44,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-04-05 05:32:44,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:44,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-04-05 05:32:44,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:44,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-04-05 05:32:44,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:44,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-04-05 05:32:44,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:44,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-04-05 05:32:44,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:44,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-04-05 05:32:44,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:44,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-04-05 05:32:44,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:44,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-04-05 05:32:44,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:44,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2022-04-05 05:32:44,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:44,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-04-05 05:32:44,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:44,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2022-04-05 05:32:44,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:44,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-04-05 05:32:44,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:44,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-04-05 05:32:44,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:44,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-04-05 05:32:44,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:44,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-04-05 05:32:44,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:44,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-04-05 05:32:44,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:44,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2022-04-05 05:32:44,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:44,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-04-05 05:32:44,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:44,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2022-04-05 05:32:44,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:44,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-04-05 05:32:44,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:44,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-04-05 05:32:44,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:44,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-04-05 05:32:44,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:44,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-04-05 05:32:44,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:44,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2022-04-05 05:32:44,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:44,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2022-04-05 05:32:44,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:44,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-04-05 05:32:44,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:44,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 441 [2022-04-05 05:32:44,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:44,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2022-04-05 05:32:44,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:44,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2022-04-05 05:32:44,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:44,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2022-04-05 05:32:44,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:44,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2022-04-05 05:32:44,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:44,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2022-04-05 05:32:44,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:44,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 483 [2022-04-05 05:32:44,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:44,065 INFO L134 CoverageAnalysis]: Checked inductivity of 14521 backedges. 1950 proven. 5491 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2022-04-05 05:32:44,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:32:44,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076081857] [2022-04-05 05:32:44,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076081857] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:32:44,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023135719] [2022-04-05 05:32:44,066 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-05 05:32:44,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:32:44,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:32:44,067 INFO L229 MonitoredProcess]: Starting monitored process 122 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:32:44,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Waiting until timeout for monitored process [2022-04-05 05:32:44,336 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2022-04-05 05:32:44,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:32:44,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 1201 conjuncts, 125 conjunts are in the unsatisfiable core [2022-04-05 05:32:44,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:32:45,021 INFO L134 CoverageAnalysis]: Checked inductivity of 14521 backedges. 2011 proven. 5430 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2022-04-05 05:32:45,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:32:45,749 INFO L134 CoverageAnalysis]: Checked inductivity of 14521 backedges. 2011 proven. 5430 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2022-04-05 05:32:45,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023135719] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:32:45,749 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:32:45,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 66, 66] total 70 [2022-04-05 05:32:45,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934273125] [2022-04-05 05:32:45,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:32:45,750 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-04-05 05:32:45,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:32:45,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-04-05 05:32:45,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2031, Invalid=2799, Unknown=0, NotChecked=0, Total=4830 [2022-04-05 05:32:45,751 INFO L87 Difference]: Start difference. First operand 497 states and 498 transitions. Second operand has 70 states, 70 states have (on average 2.8285714285714287) internal successors, (198), 67 states have internal predecessors, (198), 62 states have call successors, (65), 4 states have call predecessors, (65), 1 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2022-04-05 05:32:47,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:32:47,444 INFO L93 Difference]: Finished difference Result 510 states and 512 transitions. [2022-04-05 05:32:47,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-04-05 05:32:47,445 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 2.8285714285714287) internal successors, (198), 67 states have internal predecessors, (198), 62 states have call successors, (65), 4 states have call predecessors, (65), 1 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) Word has length 494 [2022-04-05 05:32:47,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:32:47,446 INFO L225 Difference]: With dead ends: 510 [2022-04-05 05:32:47,446 INFO L226 Difference]: Without dead ends: 508 [2022-04-05 05:32:47,447 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1302 GetRequests, 1166 SyntacticMatches, 2 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3119 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=6085, Invalid=12275, Unknown=0, NotChecked=0, Total=18360 [2022-04-05 05:32:47,447 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 153 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1415 mSolverCounterSat, 316 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 1731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 316 IncrementalHoareTripleChecker+Valid, 1415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-05 05:32:47,447 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 45 Invalid, 1731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [316 Valid, 1415 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-05 05:32:47,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2022-04-05 05:32:47,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 504. [2022-04-05 05:32:47,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 376 states have (on average 1.0053191489361701) internal successors, (378), 377 states have internal predecessors, (378), 64 states have call successors, (64), 64 states have call predecessors, (64), 63 states have return successors, (63), 62 states have call predecessors, (63), 63 states have call successors, (63) [2022-04-05 05:32:47,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 505 transitions. [2022-04-05 05:32:47,505 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 505 transitions. Word has length 494 [2022-04-05 05:32:47,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:32:47,505 INFO L478 AbstractCegarLoop]: Abstraction has 504 states and 505 transitions. [2022-04-05 05:32:47,505 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 2.8285714285714287) internal successors, (198), 67 states have internal predecessors, (198), 62 states have call successors, (65), 4 states have call predecessors, (65), 1 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2022-04-05 05:32:47,506 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 505 transitions. [2022-04-05 05:32:47,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2022-04-05 05:32:47,507 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:32:47,507 INFO L499 BasicCegarLoop]: trace histogram [62, 62, 62, 61, 61, 61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:32:47,525 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Ended with exit code 0 [2022-04-05 05:32:47,708 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 122 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2022-04-05 05:32:47,708 INFO L403 AbstractCegarLoop]: === Iteration 124 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:32:47,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:32:47,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1821238499, now seen corresponding path program 121 times [2022-04-05 05:32:47,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:32:47,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764408212] [2022-04-05 05:32:47,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:32:47,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:32:47,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:51,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:32:51,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:51,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-04-05 05:32:51,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:51,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-04-05 05:32:51,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:51,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-04-05 05:32:51,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:51,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-04-05 05:32:51,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:51,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-04-05 05:32:51,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:51,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-04-05 05:32:51,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:51,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-04-05 05:32:51,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:51,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-04-05 05:32:51,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:51,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-04-05 05:32:51,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:51,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-04-05 05:32:51,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:51,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-04-05 05:32:51,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:51,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-04-05 05:32:51,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:51,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-04-05 05:32:51,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:51,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-04-05 05:32:51,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:51,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-04-05 05:32:51,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:51,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-04-05 05:32:51,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:51,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-04-05 05:32:51,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:51,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-04-05 05:32:51,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:51,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-04-05 05:32:51,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:51,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-04-05 05:32:51,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:51,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-04-05 05:32:51,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:51,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-04-05 05:32:51,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:51,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-04-05 05:32:51,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:51,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-04-05 05:32:51,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:51,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-04-05 05:32:51,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:51,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-04-05 05:32:51,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:51,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-04-05 05:32:51,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:51,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-04-05 05:32:51,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:51,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-04-05 05:32:51,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:51,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-04-05 05:32:51,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:51,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-04-05 05:32:51,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:51,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-04-05 05:32:51,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:51,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-04-05 05:32:51,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:51,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-04-05 05:32:51,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:51,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-04-05 05:32:51,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:51,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2022-04-05 05:32:51,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:51,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-04-05 05:32:51,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:51,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2022-04-05 05:32:51,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:51,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-04-05 05:32:51,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:51,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-04-05 05:32:51,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:51,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-04-05 05:32:51,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:51,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-04-05 05:32:51,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:51,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-04-05 05:32:51,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:51,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2022-04-05 05:32:51,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:51,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-04-05 05:32:51,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:51,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2022-04-05 05:32:51,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:51,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-04-05 05:32:51,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:51,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-04-05 05:32:51,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:51,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-04-05 05:32:51,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:51,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-04-05 05:32:51,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:51,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2022-04-05 05:32:51,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:51,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2022-04-05 05:32:51,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:51,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-04-05 05:32:51,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:51,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 441 [2022-04-05 05:32:51,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:51,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2022-04-05 05:32:51,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:51,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2022-04-05 05:32:51,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:51,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2022-04-05 05:32:51,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:51,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2022-04-05 05:32:51,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:51,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2022-04-05 05:32:51,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:51,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 483 [2022-04-05 05:32:51,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:51,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2022-04-05 05:32:51,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:51,574 INFO L134 CoverageAnalysis]: Checked inductivity of 14945 backedges. 5553 proven. 2072 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2022-04-05 05:32:51,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:32:51,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764408212] [2022-04-05 05:32:51,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764408212] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:32:51,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496609092] [2022-04-05 05:32:51,574 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-05 05:32:51,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:32:51,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:32:51,575 INFO L229 MonitoredProcess]: Starting monitored process 123 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:32:51,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Waiting until timeout for monitored process [2022-04-05 05:32:51,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:32:51,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 1215 conjuncts, 126 conjunts are in the unsatisfiable core [2022-04-05 05:32:51,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:32:57,108 INFO L134 CoverageAnalysis]: Checked inductivity of 14945 backedges. 5734 proven. 1891 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2022-04-05 05:32:57,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:32:57,893 INFO L134 CoverageAnalysis]: Checked inductivity of 14945 backedges. 5734 proven. 1891 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2022-04-05 05:32:57,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496609092] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:32:57,893 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:32:57,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [128, 127, 127] total 192 [2022-04-05 05:32:57,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185960797] [2022-04-05 05:32:57,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:32:57,894 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2022-04-05 05:32:57,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:32:57,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2022-04-05 05:32:57,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8134, Invalid=28538, Unknown=0, NotChecked=0, Total=36672 [2022-04-05 05:32:57,897 INFO L87 Difference]: Start difference. First operand 504 states and 505 transitions. Second operand has 192 states, 192 states have (on average 1.6927083333333333) internal successors, (325), 191 states have internal predecessors, (325), 125 states have call successors, (127), 3 states have call predecessors, (127), 1 states have return successors, (124), 124 states have call predecessors, (124), 124 states have call successors, (124) [2022-04-05 05:33:03,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:33:03,076 INFO L93 Difference]: Finished difference Result 699 states and 762 transitions. [2022-04-05 05:33:03,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2022-04-05 05:33:03,077 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 192 states have (on average 1.6927083333333333) internal successors, (325), 191 states have internal predecessors, (325), 125 states have call successors, (127), 3 states have call predecessors, (127), 1 states have return successors, (124), 124 states have call predecessors, (124), 124 states have call successors, (124) Word has length 501 [2022-04-05 05:33:03,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:33:03,078 INFO L225 Difference]: With dead ends: 699 [2022-04-05 05:33:03,078 INFO L226 Difference]: Without dead ends: 505 [2022-04-05 05:33:03,082 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1377 GetRequests, 1061 SyntacticMatches, 1 SemanticMatches, 315 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27825 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=18342, Invalid=81830, Unknown=0, NotChecked=0, Total=100172 [2022-04-05 05:33:03,083 INFO L913 BasicCegarLoop]: 73 mSDtfsCounter, 21 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 2477 mSolverCounterSat, 264 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 2741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 264 IncrementalHoareTripleChecker+Valid, 2477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-05 05:33:03,083 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 100 Invalid, 2741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [264 Valid, 2477 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-05 05:33:03,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2022-04-05 05:33:03,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 505. [2022-04-05 05:33:03,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 377 states have (on average 1.0053050397877985) internal successors, (379), 378 states have internal predecessors, (379), 64 states have call successors, (64), 64 states have call predecessors, (64), 63 states have return successors, (63), 62 states have call predecessors, (63), 63 states have call successors, (63) [2022-04-05 05:33:03,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 506 transitions. [2022-04-05 05:33:03,143 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 506 transitions. Word has length 501 [2022-04-05 05:33:03,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:33:03,144 INFO L478 AbstractCegarLoop]: Abstraction has 505 states and 506 transitions. [2022-04-05 05:33:03,144 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 192 states have (on average 1.6927083333333333) internal successors, (325), 191 states have internal predecessors, (325), 125 states have call successors, (127), 3 states have call predecessors, (127), 1 states have return successors, (124), 124 states have call predecessors, (124), 124 states have call successors, (124) [2022-04-05 05:33:03,144 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 506 transitions. [2022-04-05 05:33:03,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2022-04-05 05:33:03,146 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:33:03,146 INFO L499 BasicCegarLoop]: trace histogram [62, 62, 62, 62, 61, 61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:33:03,164 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Ended with exit code 0 [2022-04-05 05:33:03,347 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123,123 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:33:03,347 INFO L403 AbstractCegarLoop]: === Iteration 125 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:33:03,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:33:03,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1859098529, now seen corresponding path program 122 times [2022-04-05 05:33:03,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:33:03,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702194460] [2022-04-05 05:33:03,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:33:03,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:33:03,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:04,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:33:04,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:04,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-04-05 05:33:04,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:04,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-04-05 05:33:04,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:04,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-04-05 05:33:04,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:04,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-04-05 05:33:04,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:04,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-04-05 05:33:04,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:04,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-04-05 05:33:04,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:04,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-04-05 05:33:04,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:04,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-04-05 05:33:04,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:04,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-04-05 05:33:04,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:04,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-04-05 05:33:04,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:04,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-04-05 05:33:04,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:04,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-04-05 05:33:04,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:04,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-04-05 05:33:04,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:04,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-04-05 05:33:04,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:04,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-04-05 05:33:04,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:04,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-04-05 05:33:04,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:04,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-04-05 05:33:04,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:04,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-04-05 05:33:04,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:04,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-04-05 05:33:04,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:04,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-04-05 05:33:04,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:04,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-04-05 05:33:04,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:04,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-04-05 05:33:04,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:04,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-04-05 05:33:04,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:04,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-04-05 05:33:04,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:04,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-04-05 05:33:04,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:04,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-04-05 05:33:04,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:04,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-04-05 05:33:04,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:04,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-04-05 05:33:04,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:04,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-04-05 05:33:04,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:04,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-04-05 05:33:04,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:04,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-04-05 05:33:04,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:04,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-04-05 05:33:04,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:04,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-04-05 05:33:04,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:04,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-04-05 05:33:04,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:04,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-04-05 05:33:04,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:04,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-04-05 05:33:04,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:04,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2022-04-05 05:33:04,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:04,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-04-05 05:33:04,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:04,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2022-04-05 05:33:04,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:04,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-04-05 05:33:04,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:04,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-04-05 05:33:04,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:04,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-04-05 05:33:04,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:04,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-04-05 05:33:04,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:04,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-04-05 05:33:04,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:04,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2022-04-05 05:33:04,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:04,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-04-05 05:33:04,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:04,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2022-04-05 05:33:04,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:04,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-04-05 05:33:04,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:04,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-04-05 05:33:04,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:04,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-04-05 05:33:04,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:04,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-04-05 05:33:04,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:04,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2022-04-05 05:33:04,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:04,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 435 [2022-04-05 05:33:04,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:04,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2022-04-05 05:33:04,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:04,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 449 [2022-04-05 05:33:04,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:04,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2022-04-05 05:33:04,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:04,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2022-04-05 05:33:04,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:04,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2022-04-05 05:33:04,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:04,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2022-04-05 05:33:04,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:04,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2022-04-05 05:33:04,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:04,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2022-04-05 05:33:04,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:04,888 INFO L134 CoverageAnalysis]: Checked inductivity of 15007 backedges. 2013 proven. 5674 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2022-04-05 05:33:04,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:33:04,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702194460] [2022-04-05 05:33:04,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702194460] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:33:04,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727747997] [2022-04-05 05:33:04,889 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 05:33:04,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:33:04,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:33:04,890 INFO L229 MonitoredProcess]: Starting monitored process 124 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:33:04,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Waiting until timeout for monitored process [2022-04-05 05:33:05,043 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 05:33:05,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:33:05,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 1220 conjuncts, 127 conjunts are in the unsatisfiable core [2022-04-05 05:33:05,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:33:05,747 INFO L134 CoverageAnalysis]: Checked inductivity of 15007 backedges. 2075 proven. 5612 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2022-04-05 05:33:05,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:33:06,512 INFO L134 CoverageAnalysis]: Checked inductivity of 15007 backedges. 2075 proven. 5612 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2022-04-05 05:33:06,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1727747997] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:33:06,513 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:33:06,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 67, 67] total 71 [2022-04-05 05:33:06,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502203778] [2022-04-05 05:33:06,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:33:06,514 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2022-04-05 05:33:06,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:33:06,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2022-04-05 05:33:06,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2095, Invalid=2875, Unknown=0, NotChecked=0, Total=4970 [2022-04-05 05:33:06,514 INFO L87 Difference]: Start difference. First operand 505 states and 506 transitions. Second operand has 71 states, 71 states have (on average 2.8309859154929575) internal successors, (201), 68 states have internal predecessors, (201), 63 states have call successors, (66), 4 states have call predecessors, (66), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2022-04-05 05:33:08,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:33:08,296 INFO L93 Difference]: Finished difference Result 518 states and 520 transitions. [2022-04-05 05:33:08,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-04-05 05:33:08,296 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 2.8309859154929575) internal successors, (201), 68 states have internal predecessors, (201), 63 states have call successors, (66), 4 states have call predecessors, (66), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) Word has length 502 [2022-04-05 05:33:08,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:33:08,297 INFO L225 Difference]: With dead ends: 518 [2022-04-05 05:33:08,297 INFO L226 Difference]: Without dead ends: 516 [2022-04-05 05:33:08,298 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1323 GetRequests, 1185 SyntacticMatches, 2 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3201 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=6277, Invalid=12629, Unknown=0, NotChecked=0, Total=18906 [2022-04-05 05:33:08,299 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 151 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1501 mSolverCounterSat, 383 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 1884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 383 IncrementalHoareTripleChecker+Valid, 1501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-05 05:33:08,299 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 55 Invalid, 1884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [383 Valid, 1501 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-05 05:33:08,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2022-04-05 05:33:08,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 512. [2022-04-05 05:33:08,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 382 states have (on average 1.0052356020942408) internal successors, (384), 383 states have internal predecessors, (384), 65 states have call successors, (65), 65 states have call predecessors, (65), 64 states have return successors, (64), 63 states have call predecessors, (64), 64 states have call successors, (64) [2022-04-05 05:33:08,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 513 transitions. [2022-04-05 05:33:08,359 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 513 transitions. Word has length 502 [2022-04-05 05:33:08,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:33:08,360 INFO L478 AbstractCegarLoop]: Abstraction has 512 states and 513 transitions. [2022-04-05 05:33:08,360 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 2.8309859154929575) internal successors, (201), 68 states have internal predecessors, (201), 63 states have call successors, (66), 4 states have call predecessors, (66), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2022-04-05 05:33:08,360 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 513 transitions. [2022-04-05 05:33:08,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2022-04-05 05:33:08,362 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:33:08,362 INFO L499 BasicCegarLoop]: trace histogram [63, 63, 63, 62, 62, 62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:33:08,379 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Ended with exit code 0 [2022-04-05 05:33:08,562 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 124 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2022-04-05 05:33:08,562 INFO L403 AbstractCegarLoop]: === Iteration 126 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:33:08,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:33:08,563 INFO L85 PathProgramCache]: Analyzing trace with hash -871977383, now seen corresponding path program 123 times [2022-04-05 05:33:08,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:33:08,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889129173] [2022-04-05 05:33:08,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:33:08,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:33:08,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:12,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:33:12,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:12,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-04-05 05:33:12,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:12,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-04-05 05:33:12,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:12,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-04-05 05:33:12,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:12,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-04-05 05:33:12,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:12,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-04-05 05:33:12,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:12,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-04-05 05:33:12,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:12,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-04-05 05:33:12,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:12,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-04-05 05:33:12,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:12,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-04-05 05:33:12,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:12,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-04-05 05:33:12,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:12,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-04-05 05:33:12,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:12,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-04-05 05:33:12,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:12,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-04-05 05:33:12,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:12,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-04-05 05:33:12,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:12,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-04-05 05:33:12,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:12,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-04-05 05:33:12,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:12,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-04-05 05:33:12,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:12,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-04-05 05:33:12,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:12,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-04-05 05:33:12,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:12,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-04-05 05:33:12,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:12,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-04-05 05:33:12,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:12,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-04-05 05:33:12,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:12,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-04-05 05:33:12,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:12,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-04-05 05:33:12,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:12,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-04-05 05:33:12,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:12,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-04-05 05:33:12,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:12,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-04-05 05:33:12,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:12,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-04-05 05:33:12,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:12,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-04-05 05:33:12,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:12,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-04-05 05:33:12,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:12,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-04-05 05:33:12,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:12,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-04-05 05:33:12,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:12,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-04-05 05:33:12,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:12,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-04-05 05:33:12,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:12,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-04-05 05:33:12,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:12,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-04-05 05:33:12,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:12,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2022-04-05 05:33:12,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:12,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-04-05 05:33:12,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:12,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2022-04-05 05:33:12,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:12,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-04-05 05:33:12,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:12,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-04-05 05:33:12,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:12,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-04-05 05:33:12,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:12,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-04-05 05:33:12,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:12,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-04-05 05:33:12,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:12,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2022-04-05 05:33:12,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:12,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-04-05 05:33:12,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:12,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2022-04-05 05:33:12,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:12,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-04-05 05:33:12,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:12,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-04-05 05:33:12,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:12,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-04-05 05:33:12,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:12,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-04-05 05:33:12,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:12,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2022-04-05 05:33:12,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:12,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 435 [2022-04-05 05:33:12,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:12,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2022-04-05 05:33:12,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:12,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 449 [2022-04-05 05:33:12,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:12,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2022-04-05 05:33:12,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:12,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2022-04-05 05:33:12,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:12,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2022-04-05 05:33:12,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:12,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2022-04-05 05:33:12,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:12,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2022-04-05 05:33:12,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:12,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2022-04-05 05:33:12,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:12,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2022-04-05 05:33:12,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:12,538 INFO L134 CoverageAnalysis]: Checked inductivity of 15438 backedges. 5737 proven. 2137 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2022-04-05 05:33:12,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:33:12,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889129173] [2022-04-05 05:33:12,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889129173] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:33:12,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300862226] [2022-04-05 05:33:12,538 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-05 05:33:12,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:33:12,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:33:12,539 INFO L229 MonitoredProcess]: Starting monitored process 125 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:33:12,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Waiting until timeout for monitored process [2022-04-05 05:33:12,847 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 63 check-sat command(s) [2022-04-05 05:33:12,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:33:12,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 1234 conjuncts, 128 conjunts are in the unsatisfiable core [2022-04-05 05:33:12,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:33:18,322 INFO L134 CoverageAnalysis]: Checked inductivity of 15438 backedges. 5921 proven. 1953 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2022-04-05 05:33:18,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:33:19,119 INFO L134 CoverageAnalysis]: Checked inductivity of 15438 backedges. 5921 proven. 1953 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2022-04-05 05:33:19,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300862226] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:33:19,119 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:33:19,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [130, 129, 129] total 195 [2022-04-05 05:33:19,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889557610] [2022-04-05 05:33:19,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:33:19,120 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 195 states [2022-04-05 05:33:19,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:33:19,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 195 interpolants. [2022-04-05 05:33:19,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8391, Invalid=29439, Unknown=0, NotChecked=0, Total=37830 [2022-04-05 05:33:19,123 INFO L87 Difference]: Start difference. First operand 512 states and 513 transitions. Second operand has 195 states, 195 states have (on average 1.6923076923076923) internal successors, (330), 194 states have internal predecessors, (330), 127 states have call successors, (129), 3 states have call predecessors, (129), 1 states have return successors, (126), 126 states have call predecessors, (126), 126 states have call successors, (126) [2022-04-05 05:33:24,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:33:24,674 INFO L93 Difference]: Finished difference Result 710 states and 774 transitions. [2022-04-05 05:33:24,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2022-04-05 05:33:24,675 INFO L78 Accepts]: Start accepts. Automaton has has 195 states, 195 states have (on average 1.6923076923076923) internal successors, (330), 194 states have internal predecessors, (330), 127 states have call successors, (129), 3 states have call predecessors, (129), 1 states have return successors, (126), 126 states have call predecessors, (126), 126 states have call successors, (126) Word has length 509 [2022-04-05 05:33:24,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:33:24,676 INFO L225 Difference]: With dead ends: 710 [2022-04-05 05:33:24,676 INFO L226 Difference]: Without dead ends: 513 [2022-04-05 05:33:24,680 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1399 GetRequests, 1078 SyntacticMatches, 1 SemanticMatches, 320 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28715 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=18921, Invalid=84441, Unknown=0, NotChecked=0, Total=103362 [2022-04-05 05:33:24,680 INFO L913 BasicCegarLoop]: 74 mSDtfsCounter, 21 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 3162 mSolverCounterSat, 262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 3424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 3162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-04-05 05:33:24,680 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 126 Invalid, 3424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [262 Valid, 3162 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-04-05 05:33:24,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2022-04-05 05:33:24,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 513. [2022-04-05 05:33:24,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 383 states have (on average 1.0052219321148825) internal successors, (385), 384 states have internal predecessors, (385), 65 states have call successors, (65), 65 states have call predecessors, (65), 64 states have return successors, (64), 63 states have call predecessors, (64), 64 states have call successors, (64) [2022-04-05 05:33:24,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 514 transitions. [2022-04-05 05:33:24,772 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 514 transitions. Word has length 509 [2022-04-05 05:33:24,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:33:24,772 INFO L478 AbstractCegarLoop]: Abstraction has 513 states and 514 transitions. [2022-04-05 05:33:24,773 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 195 states, 195 states have (on average 1.6923076923076923) internal successors, (330), 194 states have internal predecessors, (330), 127 states have call successors, (129), 3 states have call predecessors, (129), 1 states have return successors, (126), 126 states have call predecessors, (126), 126 states have call successors, (126) [2022-04-05 05:33:24,773 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 514 transitions. [2022-04-05 05:33:24,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2022-04-05 05:33:24,775 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:33:24,775 INFO L499 BasicCegarLoop]: trace histogram [63, 63, 63, 63, 62, 62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:33:24,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Forceful destruction successful, exit code 0 [2022-04-05 05:33:24,993 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 125 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2022-04-05 05:33:24,994 INFO L403 AbstractCegarLoop]: === Iteration 127 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:33:24,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:33:24,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1821284643, now seen corresponding path program 124 times [2022-04-05 05:33:24,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:33:24,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358624131] [2022-04-05 05:33:24,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:33:24,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:33:25,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:26,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:33:26,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:26,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-04-05 05:33:26,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:26,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-04-05 05:33:26,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:26,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-04-05 05:33:26,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:26,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-04-05 05:33:26,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:26,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-04-05 05:33:26,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:26,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-04-05 05:33:26,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:26,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-04-05 05:33:26,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:26,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-04-05 05:33:26,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:26,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-04-05 05:33:26,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:26,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-04-05 05:33:26,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:26,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-04-05 05:33:26,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:26,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-04-05 05:33:26,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:26,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-04-05 05:33:26,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:26,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-04-05 05:33:26,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:26,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-04-05 05:33:26,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:26,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-04-05 05:33:26,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:26,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-04-05 05:33:26,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:26,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-04-05 05:33:26,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:26,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-04-05 05:33:26,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:26,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-04-05 05:33:26,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:26,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-04-05 05:33:26,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:26,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-04-05 05:33:26,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:26,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-04-05 05:33:26,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:26,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-04-05 05:33:26,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:26,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-04-05 05:33:26,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:26,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-04-05 05:33:26,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:26,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-04-05 05:33:26,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:26,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-04-05 05:33:26,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:26,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-04-05 05:33:26,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:26,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-04-05 05:33:26,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:26,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-04-05 05:33:26,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:26,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2022-04-05 05:33:26,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:26,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-04-05 05:33:26,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:26,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-04-05 05:33:26,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:26,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-04-05 05:33:26,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:26,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-04-05 05:33:26,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:26,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-04-05 05:33:26,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:26,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-04-05 05:33:26,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:26,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-04-05 05:33:26,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:26,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2022-04-05 05:33:26,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:26,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-04-05 05:33:26,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:26,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-04-05 05:33:26,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:26,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-04-05 05:33:26,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:26,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-04-05 05:33:26,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:26,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-04-05 05:33:26,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:26,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2022-04-05 05:33:26,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:26,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-04-05 05:33:26,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:26,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2022-04-05 05:33:26,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:26,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-04-05 05:33:26,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:26,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-04-05 05:33:26,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:26,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-04-05 05:33:26,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:26,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-04-05 05:33:26,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:26,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2022-04-05 05:33:26,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:26,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2022-04-05 05:33:26,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:26,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2022-04-05 05:33:26,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:26,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2022-04-05 05:33:26,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:26,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2022-04-05 05:33:26,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:26,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2022-04-05 05:33:26,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:26,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2022-04-05 05:33:26,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:26,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2022-04-05 05:33:26,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:26,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 492 [2022-04-05 05:33:26,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:26,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 499 [2022-04-05 05:33:26,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:26,565 INFO L134 CoverageAnalysis]: Checked inductivity of 15501 backedges. 2077 proven. 5860 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2022-04-05 05:33:26,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:33:26,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358624131] [2022-04-05 05:33:26,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358624131] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:33:26,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417647652] [2022-04-05 05:33:26,565 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-05 05:33:26,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:33:26,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:33:26,567 INFO L229 MonitoredProcess]: Starting monitored process 126 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:33:26,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Waiting until timeout for monitored process [2022-04-05 05:33:26,734 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-05 05:33:26,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:33:26,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 1239 conjuncts, 129 conjunts are in the unsatisfiable core [2022-04-05 05:33:26,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:33:27,430 INFO L134 CoverageAnalysis]: Checked inductivity of 15501 backedges. 2140 proven. 5797 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2022-04-05 05:33:27,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:33:28,158 INFO L134 CoverageAnalysis]: Checked inductivity of 15501 backedges. 2140 proven. 5797 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2022-04-05 05:33:28,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417647652] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:33:28,158 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:33:28,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 68, 68] total 72 [2022-04-05 05:33:28,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588761754] [2022-04-05 05:33:28,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:33:28,159 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-04-05 05:33:28,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:33:28,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-04-05 05:33:28,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2160, Invalid=2952, Unknown=0, NotChecked=0, Total=5112 [2022-04-05 05:33:28,160 INFO L87 Difference]: Start difference. First operand 513 states and 514 transitions. Second operand has 72 states, 72 states have (on average 2.8333333333333335) internal successors, (204), 69 states have internal predecessors, (204), 64 states have call successors, (67), 4 states have call predecessors, (67), 1 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2022-04-05 05:33:29,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:33:29,898 INFO L93 Difference]: Finished difference Result 526 states and 528 transitions. [2022-04-05 05:33:29,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-04-05 05:33:29,898 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 2.8333333333333335) internal successors, (204), 69 states have internal predecessors, (204), 64 states have call successors, (67), 4 states have call predecessors, (67), 1 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) Word has length 510 [2022-04-05 05:33:29,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:33:29,900 INFO L225 Difference]: With dead ends: 526 [2022-04-05 05:33:29,900 INFO L226 Difference]: Without dead ends: 524 [2022-04-05 05:33:29,902 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1344 GetRequests, 1204 SyntacticMatches, 2 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3284 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=6472, Invalid=12988, Unknown=0, NotChecked=0, Total=19460 [2022-04-05 05:33:29,902 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 159 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1320 mSolverCounterSat, 389 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 1709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 389 IncrementalHoareTripleChecker+Valid, 1320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-05 05:33:29,902 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 65 Invalid, 1709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [389 Valid, 1320 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-05 05:33:29,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2022-04-05 05:33:29,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 520. [2022-04-05 05:33:29,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 388 states have (on average 1.0051546391752577) internal successors, (390), 389 states have internal predecessors, (390), 66 states have call successors, (66), 66 states have call predecessors, (66), 65 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) [2022-04-05 05:33:29,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 521 transitions. [2022-04-05 05:33:29,975 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 521 transitions. Word has length 510 [2022-04-05 05:33:29,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:33:29,976 INFO L478 AbstractCegarLoop]: Abstraction has 520 states and 521 transitions. [2022-04-05 05:33:29,976 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 2.8333333333333335) internal successors, (204), 69 states have internal predecessors, (204), 64 states have call successors, (67), 4 states have call predecessors, (67), 1 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2022-04-05 05:33:29,976 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 521 transitions. [2022-04-05 05:33:29,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2022-04-05 05:33:29,978 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:33:29,978 INFO L499 BasicCegarLoop]: trace histogram [64, 64, 64, 63, 63, 63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:33:29,996 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Ended with exit code 0 [2022-04-05 05:33:30,179 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable126 [2022-04-05 05:33:30,179 INFO L403 AbstractCegarLoop]: === Iteration 128 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:33:30,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:33:30,180 INFO L85 PathProgramCache]: Analyzing trace with hash -866876515, now seen corresponding path program 125 times [2022-04-05 05:33:30,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:33:30,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030747773] [2022-04-05 05:33:30,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:33:30,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:33:30,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:34,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:33:34,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:34,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-04-05 05:33:34,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:34,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-04-05 05:33:34,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:34,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-04-05 05:33:34,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:34,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-04-05 05:33:34,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:34,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-04-05 05:33:34,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:34,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-04-05 05:33:34,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:34,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-04-05 05:33:34,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:34,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-04-05 05:33:34,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:34,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-04-05 05:33:34,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:34,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-04-05 05:33:34,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:34,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-04-05 05:33:34,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:34,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-04-05 05:33:34,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:34,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-04-05 05:33:34,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:34,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-04-05 05:33:34,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:34,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-04-05 05:33:34,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:34,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-04-05 05:33:34,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:34,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-04-05 05:33:34,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:34,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-04-05 05:33:34,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:34,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-04-05 05:33:34,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:34,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-04-05 05:33:34,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:34,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-04-05 05:33:34,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:34,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-04-05 05:33:34,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:34,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-04-05 05:33:34,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:34,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-04-05 05:33:34,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:34,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-04-05 05:33:34,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:34,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-04-05 05:33:34,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:34,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-04-05 05:33:34,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:34,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-04-05 05:33:34,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:34,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-04-05 05:33:34,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:34,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-04-05 05:33:34,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:34,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-04-05 05:33:34,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:34,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2022-04-05 05:33:34,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:34,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-04-05 05:33:34,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:34,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-04-05 05:33:34,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:34,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-04-05 05:33:34,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:34,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-04-05 05:33:34,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:34,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-04-05 05:33:34,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:34,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-04-05 05:33:34,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:34,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-04-05 05:33:34,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:34,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2022-04-05 05:33:34,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:34,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-04-05 05:33:34,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:34,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-04-05 05:33:34,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:34,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-04-05 05:33:34,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:34,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-04-05 05:33:34,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:34,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-04-05 05:33:34,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:34,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2022-04-05 05:33:34,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:34,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-04-05 05:33:34,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:34,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2022-04-05 05:33:34,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:34,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-04-05 05:33:34,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:34,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-04-05 05:33:34,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:34,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-04-05 05:33:34,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:34,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-04-05 05:33:34,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:34,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2022-04-05 05:33:34,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:34,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2022-04-05 05:33:34,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:34,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2022-04-05 05:33:34,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:34,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2022-04-05 05:33:34,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:34,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2022-04-05 05:33:34,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:34,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2022-04-05 05:33:34,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:34,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2022-04-05 05:33:34,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:34,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2022-04-05 05:33:34,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:34,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 492 [2022-04-05 05:33:34,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:34,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 499 [2022-04-05 05:33:34,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:34,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2022-04-05 05:33:34,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:34,260 INFO L134 CoverageAnalysis]: Checked inductivity of 15939 backedges. 5924 proven. 2203 refuted. 0 times theorem prover too weak. 7812 trivial. 0 not checked. [2022-04-05 05:33:34,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:33:34,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030747773] [2022-04-05 05:33:34,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030747773] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:33:34,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26615017] [2022-04-05 05:33:34,260 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-05 05:33:34,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:33:34,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:33:34,261 INFO L229 MonitoredProcess]: Starting monitored process 127 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:33:34,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Waiting until timeout for monitored process [2022-04-05 05:33:34,533 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 64 check-sat command(s) [2022-04-05 05:33:34,533 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:33:34,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 1253 conjuncts, 130 conjunts are in the unsatisfiable core [2022-04-05 05:33:34,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:33:40,211 INFO L134 CoverageAnalysis]: Checked inductivity of 15939 backedges. 6111 proven. 2016 refuted. 0 times theorem prover too weak. 7812 trivial. 0 not checked. [2022-04-05 05:33:40,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:33:41,023 INFO L134 CoverageAnalysis]: Checked inductivity of 15939 backedges. 6111 proven. 2016 refuted. 0 times theorem prover too weak. 7812 trivial. 0 not checked. [2022-04-05 05:33:41,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26615017] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:33:41,024 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:33:41,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [132, 131, 131] total 198 [2022-04-05 05:33:41,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16283987] [2022-04-05 05:33:41,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:33:41,025 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 198 states [2022-04-05 05:33:41,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:33:41,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 198 interpolants. [2022-04-05 05:33:41,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8652, Invalid=30354, Unknown=0, NotChecked=0, Total=39006 [2022-04-05 05:33:41,029 INFO L87 Difference]: Start difference. First operand 520 states and 521 transitions. Second operand has 198 states, 198 states have (on average 1.6919191919191918) internal successors, (335), 197 states have internal predecessors, (335), 129 states have call successors, (131), 3 states have call predecessors, (131), 1 states have return successors, (128), 128 states have call predecessors, (128), 128 states have call successors, (128) [2022-04-05 05:33:46,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:33:46,959 INFO L93 Difference]: Finished difference Result 721 states and 786 transitions. [2022-04-05 05:33:46,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2022-04-05 05:33:46,960 INFO L78 Accepts]: Start accepts. Automaton has has 198 states, 198 states have (on average 1.6919191919191918) internal successors, (335), 197 states have internal predecessors, (335), 129 states have call successors, (131), 3 states have call predecessors, (131), 1 states have return successors, (128), 128 states have call predecessors, (128), 128 states have call successors, (128) Word has length 517 [2022-04-05 05:33:46,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:33:46,961 INFO L225 Difference]: With dead ends: 721 [2022-04-05 05:33:46,961 INFO L226 Difference]: Without dead ends: 521 [2022-04-05 05:33:46,965 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1421 GetRequests, 1095 SyntacticMatches, 1 SemanticMatches, 325 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29619 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=19509, Invalid=87093, Unknown=0, NotChecked=0, Total=106602 [2022-04-05 05:33:46,966 INFO L913 BasicCegarLoop]: 75 mSDtfsCounter, 21 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 4080 mSolverCounterSat, 269 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 4349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 269 IncrementalHoareTripleChecker+Valid, 4080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-04-05 05:33:46,966 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 142 Invalid, 4349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [269 Valid, 4080 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-04-05 05:33:46,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2022-04-05 05:33:47,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 521. [2022-04-05 05:33:47,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 389 states have (on average 1.0051413881748072) internal successors, (391), 390 states have internal predecessors, (391), 66 states have call successors, (66), 66 states have call predecessors, (66), 65 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) [2022-04-05 05:33:47,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 522 transitions. [2022-04-05 05:33:47,033 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 522 transitions. Word has length 517 [2022-04-05 05:33:47,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:33:47,033 INFO L478 AbstractCegarLoop]: Abstraction has 521 states and 522 transitions. [2022-04-05 05:33:47,034 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 198 states, 198 states have (on average 1.6919191919191918) internal successors, (335), 197 states have internal predecessors, (335), 129 states have call successors, (131), 3 states have call predecessors, (131), 1 states have return successors, (128), 128 states have call predecessors, (128), 128 states have call successors, (128) [2022-04-05 05:33:47,034 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 522 transitions. [2022-04-05 05:33:47,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2022-04-05 05:33:47,036 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:33:47,036 INFO L499 BasicCegarLoop]: trace histogram [64, 64, 64, 64, 63, 63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:33:47,054 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Ended with exit code 0 [2022-04-05 05:33:47,237 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127,127 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:33:47,237 INFO L403 AbstractCegarLoop]: === Iteration 129 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:33:47,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:33:47,238 INFO L85 PathProgramCache]: Analyzing trace with hash 751859745, now seen corresponding path program 126 times [2022-04-05 05:33:47,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:33:47,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465312526] [2022-04-05 05:33:47,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:33:47,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:33:47,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:48,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:33:48,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:48,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-04-05 05:33:48,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:48,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-04-05 05:33:48,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:48,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-04-05 05:33:48,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:48,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-04-05 05:33:48,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:48,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-04-05 05:33:48,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:48,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-04-05 05:33:48,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:48,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-04-05 05:33:48,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:48,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-04-05 05:33:48,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:48,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-04-05 05:33:48,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:48,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-04-05 05:33:48,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:48,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-04-05 05:33:48,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:48,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-04-05 05:33:48,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:48,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-04-05 05:33:48,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:48,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-04-05 05:33:48,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:48,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-04-05 05:33:48,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:48,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-04-05 05:33:48,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:48,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-04-05 05:33:48,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:48,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-04-05 05:33:48,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:48,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-04-05 05:33:48,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:48,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-04-05 05:33:48,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:48,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-04-05 05:33:48,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:48,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-04-05 05:33:48,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:48,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-04-05 05:33:48,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:48,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-04-05 05:33:48,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:48,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-04-05 05:33:48,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:48,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-04-05 05:33:48,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:48,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-04-05 05:33:48,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:48,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-04-05 05:33:48,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:48,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-04-05 05:33:48,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:48,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-04-05 05:33:48,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:48,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-04-05 05:33:48,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:48,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-04-05 05:33:48,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:48,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2022-04-05 05:33:48,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:48,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-04-05 05:33:48,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:48,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-04-05 05:33:48,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:48,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-04-05 05:33:48,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:48,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-04-05 05:33:48,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:48,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-04-05 05:33:48,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:48,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-04-05 05:33:48,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:48,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-04-05 05:33:48,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:48,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2022-04-05 05:33:48,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:48,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-04-05 05:33:48,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:48,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-04-05 05:33:48,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:48,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-04-05 05:33:48,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:48,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-04-05 05:33:48,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:48,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-04-05 05:33:48,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:48,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2022-04-05 05:33:48,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:48,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-04-05 05:33:48,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:48,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2022-04-05 05:33:48,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:48,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2022-04-05 05:33:48,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:48,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-04-05 05:33:48,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:48,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-04-05 05:33:48,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:48,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-04-05 05:33:48,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:48,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2022-04-05 05:33:48,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:48,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 451 [2022-04-05 05:33:48,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:48,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2022-04-05 05:33:48,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:48,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 465 [2022-04-05 05:33:48,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:48,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2022-04-05 05:33:48,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:48,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2022-04-05 05:33:48,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:48,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2022-04-05 05:33:48,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:48,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2022-04-05 05:33:48,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:48,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 500 [2022-04-05 05:33:48,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:48,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 507 [2022-04-05 05:33:48,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:48,856 INFO L134 CoverageAnalysis]: Checked inductivity of 16003 backedges. 2142 proven. 6049 refuted. 0 times theorem prover too weak. 7812 trivial. 0 not checked. [2022-04-05 05:33:48,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:33:48,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465312526] [2022-04-05 05:33:48,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465312526] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:33:48,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469123283] [2022-04-05 05:33:48,856 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-05 05:33:48,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:33:48,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:33:48,857 INFO L229 MonitoredProcess]: Starting monitored process 128 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:33:48,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Waiting until timeout for monitored process [2022-04-05 05:33:49,149 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 64 check-sat command(s) [2022-04-05 05:33:49,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:33:49,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 1258 conjuncts, 131 conjunts are in the unsatisfiable core [2022-04-05 05:33:49,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:33:49,915 INFO L134 CoverageAnalysis]: Checked inductivity of 16003 backedges. 2206 proven. 5985 refuted. 0 times theorem prover too weak. 7812 trivial. 0 not checked. [2022-04-05 05:33:49,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:33:50,663 INFO L134 CoverageAnalysis]: Checked inductivity of 16003 backedges. 2206 proven. 5985 refuted. 0 times theorem prover too weak. 7812 trivial. 0 not checked. [2022-04-05 05:33:50,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469123283] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:33:50,664 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:33:50,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 69, 69] total 73 [2022-04-05 05:33:50,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359001238] [2022-04-05 05:33:50,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:33:50,668 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2022-04-05 05:33:50,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:33:50,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2022-04-05 05:33:50,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2226, Invalid=3030, Unknown=0, NotChecked=0, Total=5256 [2022-04-05 05:33:50,670 INFO L87 Difference]: Start difference. First operand 521 states and 522 transitions. Second operand has 73 states, 73 states have (on average 2.835616438356164) internal successors, (207), 70 states have internal predecessors, (207), 65 states have call successors, (68), 4 states have call predecessors, (68), 1 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2022-04-05 05:33:52,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:33:52,424 INFO L93 Difference]: Finished difference Result 534 states and 536 transitions. [2022-04-05 05:33:52,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-04-05 05:33:52,425 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 2.835616438356164) internal successors, (207), 70 states have internal predecessors, (207), 65 states have call successors, (68), 4 states have call predecessors, (68), 1 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) Word has length 518 [2022-04-05 05:33:52,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:33:52,426 INFO L225 Difference]: With dead ends: 534 [2022-04-05 05:33:52,426 INFO L226 Difference]: Without dead ends: 532 [2022-04-05 05:33:52,428 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1365 GetRequests, 1223 SyntacticMatches, 2 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3368 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=6670, Invalid=13352, Unknown=0, NotChecked=0, Total=20022 [2022-04-05 05:33:52,428 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 165 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1204 mSolverCounterSat, 331 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 1535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 331 IncrementalHoareTripleChecker+Valid, 1204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-05 05:33:52,428 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 45 Invalid, 1535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [331 Valid, 1204 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-05 05:33:52,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2022-04-05 05:33:52,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 528. [2022-04-05 05:33:52,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 394 states have (on average 1.0050761421319796) internal successors, (396), 395 states have internal predecessors, (396), 67 states have call successors, (67), 67 states have call predecessors, (67), 66 states have return successors, (66), 65 states have call predecessors, (66), 66 states have call successors, (66) [2022-04-05 05:33:52,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 529 transitions. [2022-04-05 05:33:52,506 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 529 transitions. Word has length 518 [2022-04-05 05:33:52,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:33:52,506 INFO L478 AbstractCegarLoop]: Abstraction has 528 states and 529 transitions. [2022-04-05 05:33:52,506 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 2.835616438356164) internal successors, (207), 70 states have internal predecessors, (207), 65 states have call successors, (68), 4 states have call predecessors, (68), 1 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2022-04-05 05:33:52,507 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 529 transitions. [2022-04-05 05:33:52,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2022-04-05 05:33:52,508 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:33:52,508 INFO L499 BasicCegarLoop]: trace histogram [65, 65, 65, 64, 64, 64, 64, 64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:33:52,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Forceful destruction successful, exit code 0 [2022-04-05 05:33:52,709 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128,128 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:33:52,709 INFO L403 AbstractCegarLoop]: === Iteration 130 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:33:52,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:33:52,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1172323801, now seen corresponding path program 127 times [2022-04-05 05:33:52,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:33:52,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115596408] [2022-04-05 05:33:52,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:33:52,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:33:52,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:56,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:33:56,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:56,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-04-05 05:33:56,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:56,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-04-05 05:33:56,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:56,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-04-05 05:33:56,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:56,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-04-05 05:33:56,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:56,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-04-05 05:33:56,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:56,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-04-05 05:33:56,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:56,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-04-05 05:33:56,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:56,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-04-05 05:33:56,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:56,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-04-05 05:33:56,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:56,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-04-05 05:33:56,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:56,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-04-05 05:33:56,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:56,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-04-05 05:33:56,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:56,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-04-05 05:33:56,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:56,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-04-05 05:33:56,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:56,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-04-05 05:33:56,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:56,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-04-05 05:33:56,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:56,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-04-05 05:33:56,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:56,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-04-05 05:33:56,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:56,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-04-05 05:33:56,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:56,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-04-05 05:33:56,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:56,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-04-05 05:33:56,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:56,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-04-05 05:33:56,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:56,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-04-05 05:33:56,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:56,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-04-05 05:33:56,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:56,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-04-05 05:33:56,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:56,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-04-05 05:33:56,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:56,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-04-05 05:33:56,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:56,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-04-05 05:33:56,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:56,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-04-05 05:33:56,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:56,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-04-05 05:33:56,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:56,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-04-05 05:33:56,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:56,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-04-05 05:33:56,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:56,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2022-04-05 05:33:56,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:56,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-04-05 05:33:56,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:56,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-04-05 05:33:56,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:56,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-04-05 05:33:56,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:56,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-04-05 05:33:56,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:56,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-04-05 05:33:56,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:56,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-04-05 05:33:56,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:56,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-04-05 05:33:56,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:56,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2022-04-05 05:33:56,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:56,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-04-05 05:33:56,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:56,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-04-05 05:33:56,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:56,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-04-05 05:33:56,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:56,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-04-05 05:33:56,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:56,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-04-05 05:33:56,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:56,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2022-04-05 05:33:56,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:56,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-04-05 05:33:56,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:56,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2022-04-05 05:33:56,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:56,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2022-04-05 05:33:56,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:56,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-04-05 05:33:56,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:56,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-04-05 05:33:56,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:56,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-04-05 05:33:56,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:56,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2022-04-05 05:33:56,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:56,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 451 [2022-04-05 05:33:56,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:56,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2022-04-05 05:33:56,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:56,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 465 [2022-04-05 05:33:56,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:56,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2022-04-05 05:33:56,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:56,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2022-04-05 05:33:56,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:56,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2022-04-05 05:33:56,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:56,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2022-04-05 05:33:56,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:56,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 500 [2022-04-05 05:33:56,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:56,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 507 [2022-04-05 05:33:56,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:56,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2022-04-05 05:33:56,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:56,904 INFO L134 CoverageAnalysis]: Checked inductivity of 16448 backedges. 6114 proven. 2270 refuted. 0 times theorem prover too weak. 8064 trivial. 0 not checked. [2022-04-05 05:33:56,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:33:56,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115596408] [2022-04-05 05:33:56,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115596408] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:33:56,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703647225] [2022-04-05 05:33:56,904 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-05 05:33:56,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:33:56,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:33:56,905 INFO L229 MonitoredProcess]: Starting monitored process 129 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:33:56,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Waiting until timeout for monitored process [2022-04-05 05:33:57,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:33:57,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 1272 conjuncts, 132 conjunts are in the unsatisfiable core [2022-04-05 05:33:57,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:34:02,829 INFO L134 CoverageAnalysis]: Checked inductivity of 16448 backedges. 6304 proven. 2080 refuted. 0 times theorem prover too weak. 8064 trivial. 0 not checked. [2022-04-05 05:34:02,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:34:03,655 INFO L134 CoverageAnalysis]: Checked inductivity of 16448 backedges. 6304 proven. 2080 refuted. 0 times theorem prover too weak. 8064 trivial. 0 not checked. [2022-04-05 05:34:03,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703647225] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:34:03,656 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:34:03,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [134, 133, 133] total 201 [2022-04-05 05:34:03,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123846035] [2022-04-05 05:34:03,656 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:34:03,657 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 201 states [2022-04-05 05:34:03,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:34:03,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 201 interpolants. [2022-04-05 05:34:03,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8917, Invalid=31283, Unknown=0, NotChecked=0, Total=40200 [2022-04-05 05:34:03,661 INFO L87 Difference]: Start difference. First operand 528 states and 529 transitions. Second operand has 201 states, 201 states have (on average 1.691542288557214) internal successors, (340), 200 states have internal predecessors, (340), 131 states have call successors, (133), 3 states have call predecessors, (133), 1 states have return successors, (130), 130 states have call predecessors, (130), 130 states have call successors, (130) [2022-04-05 05:34:09,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:34:09,296 INFO L93 Difference]: Finished difference Result 732 states and 798 transitions. [2022-04-05 05:34:09,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2022-04-05 05:34:09,296 INFO L78 Accepts]: Start accepts. Automaton has has 201 states, 201 states have (on average 1.691542288557214) internal successors, (340), 200 states have internal predecessors, (340), 131 states have call successors, (133), 3 states have call predecessors, (133), 1 states have return successors, (130), 130 states have call predecessors, (130), 130 states have call successors, (130) Word has length 525 [2022-04-05 05:34:09,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:34:09,298 INFO L225 Difference]: With dead ends: 732 [2022-04-05 05:34:09,298 INFO L226 Difference]: Without dead ends: 529 [2022-04-05 05:34:09,303 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1443 GetRequests, 1112 SyntacticMatches, 1 SemanticMatches, 330 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30537 ImplicationChecksByTransitivity, 12.8s TimeCoverageRelationStatistics Valid=20106, Invalid=89786, Unknown=0, NotChecked=0, Total=109892 [2022-04-05 05:34:09,303 INFO L913 BasicCegarLoop]: 76 mSDtfsCounter, 21 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 2697 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 2971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 2697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-04-05 05:34:09,303 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 133 Invalid, 2971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 2697 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-04-05 05:34:09,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2022-04-05 05:34:09,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 529. [2022-04-05 05:34:09,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 395 states have (on average 1.0050632911392405) internal successors, (397), 396 states have internal predecessors, (397), 67 states have call successors, (67), 67 states have call predecessors, (67), 66 states have return successors, (66), 65 states have call predecessors, (66), 66 states have call successors, (66) [2022-04-05 05:34:09,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 530 transitions. [2022-04-05 05:34:09,389 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 530 transitions. Word has length 525 [2022-04-05 05:34:09,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:34:09,389 INFO L478 AbstractCegarLoop]: Abstraction has 529 states and 530 transitions. [2022-04-05 05:34:09,389 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 201 states, 201 states have (on average 1.691542288557214) internal successors, (340), 200 states have internal predecessors, (340), 131 states have call successors, (133), 3 states have call predecessors, (133), 1 states have return successors, (130), 130 states have call predecessors, (130), 130 states have call successors, (130) [2022-04-05 05:34:09,389 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 530 transitions. [2022-04-05 05:34:09,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2022-04-05 05:34:09,391 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:34:09,391 INFO L499 BasicCegarLoop]: trace histogram [65, 65, 65, 65, 64, 64, 64, 64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:34:09,409 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Ended with exit code 0 [2022-04-05 05:34:09,592 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 129 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable129 [2022-04-05 05:34:09,592 INFO L403 AbstractCegarLoop]: === Iteration 131 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:34:09,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:34:09,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1468961187, now seen corresponding path program 128 times [2022-04-05 05:34:09,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:34:09,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477052390] [2022-04-05 05:34:09,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:34:09,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:34:09,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:11,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:34:11,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:11,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-04-05 05:34:11,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:11,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-04-05 05:34:11,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:11,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-04-05 05:34:11,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:11,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-04-05 05:34:11,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:11,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-04-05 05:34:11,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:11,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-04-05 05:34:11,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:11,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-04-05 05:34:11,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:11,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-04-05 05:34:11,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:11,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-04-05 05:34:11,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:11,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-04-05 05:34:11,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:11,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-04-05 05:34:11,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:11,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-04-05 05:34:11,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:11,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-04-05 05:34:11,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:11,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-04-05 05:34:11,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:11,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-04-05 05:34:11,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:11,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-04-05 05:34:11,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:11,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-04-05 05:34:11,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:11,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-04-05 05:34:11,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:11,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-04-05 05:34:11,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:11,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-04-05 05:34:11,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:11,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-04-05 05:34:11,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:11,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-04-05 05:34:11,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:11,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-04-05 05:34:11,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:11,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-04-05 05:34:11,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:11,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-04-05 05:34:11,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:11,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-04-05 05:34:11,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:11,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-04-05 05:34:11,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:11,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-04-05 05:34:11,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:11,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-04-05 05:34:11,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:11,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-04-05 05:34:11,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:11,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-04-05 05:34:11,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:11,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-04-05 05:34:11,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:11,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-04-05 05:34:11,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:11,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2022-04-05 05:34:11,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:11,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-04-05 05:34:11,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:11,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-04-05 05:34:11,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:11,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-04-05 05:34:11,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:11,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-04-05 05:34:11,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:11,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-04-05 05:34:11,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:11,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2022-04-05 05:34:11,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:11,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-04-05 05:34:11,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:11,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2022-04-05 05:34:11,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:11,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-04-05 05:34:11,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:11,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-04-05 05:34:11,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:11,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-04-05 05:34:11,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:11,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-04-05 05:34:11,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:11,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-04-05 05:34:11,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:11,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2022-04-05 05:34:11,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:11,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-04-05 05:34:11,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:11,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2022-04-05 05:34:11,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:11,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2022-04-05 05:34:11,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:11,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-04-05 05:34:11,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:11,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-04-05 05:34:11,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:11,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-04-05 05:34:11,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:11,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2022-04-05 05:34:11,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:11,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2022-04-05 05:34:11,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:11,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2022-04-05 05:34:11,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:11,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 473 [2022-04-05 05:34:11,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:11,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2022-04-05 05:34:11,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:11,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2022-04-05 05:34:11,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:11,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2022-04-05 05:34:11,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:11,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2022-04-05 05:34:11,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:11,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2022-04-05 05:34:11,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:11,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 515 [2022-04-05 05:34:11,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:11,279 INFO L134 CoverageAnalysis]: Checked inductivity of 16513 backedges. 2208 proven. 6241 refuted. 0 times theorem prover too weak. 8064 trivial. 0 not checked. [2022-04-05 05:34:11,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:34:11,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477052390] [2022-04-05 05:34:11,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477052390] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:34:11,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254111907] [2022-04-05 05:34:11,280 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 05:34:11,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:34:11,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:34:11,284 INFO L229 MonitoredProcess]: Starting monitored process 130 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:34:11,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Waiting until timeout for monitored process [2022-04-05 05:34:11,501 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 05:34:11,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:34:11,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 1277 conjuncts, 133 conjunts are in the unsatisfiable core [2022-04-05 05:34:11,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:34:12,232 INFO L134 CoverageAnalysis]: Checked inductivity of 16513 backedges. 2273 proven. 6176 refuted. 0 times theorem prover too weak. 8064 trivial. 0 not checked. [2022-04-05 05:34:12,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:34:12,993 INFO L134 CoverageAnalysis]: Checked inductivity of 16513 backedges. 2273 proven. 6176 refuted. 0 times theorem prover too weak. 8064 trivial. 0 not checked. [2022-04-05 05:34:12,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254111907] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:34:12,994 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:34:12,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 70, 70] total 74 [2022-04-05 05:34:12,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580337973] [2022-04-05 05:34:12,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:34:12,995 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2022-04-05 05:34:12,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:34:12,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2022-04-05 05:34:12,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2293, Invalid=3109, Unknown=0, NotChecked=0, Total=5402 [2022-04-05 05:34:12,996 INFO L87 Difference]: Start difference. First operand 529 states and 530 transitions. Second operand has 74 states, 74 states have (on average 2.8378378378378377) internal successors, (210), 71 states have internal predecessors, (210), 66 states have call successors, (69), 4 states have call predecessors, (69), 1 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2022-04-05 05:34:14,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:34:14,803 INFO L93 Difference]: Finished difference Result 542 states and 544 transitions. [2022-04-05 05:34:14,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-04-05 05:34:14,803 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 2.8378378378378377) internal successors, (210), 71 states have internal predecessors, (210), 66 states have call successors, (69), 4 states have call predecessors, (69), 1 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) Word has length 526 [2022-04-05 05:34:14,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:34:14,804 INFO L225 Difference]: With dead ends: 542 [2022-04-05 05:34:14,805 INFO L226 Difference]: Without dead ends: 540 [2022-04-05 05:34:14,807 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1386 GetRequests, 1242 SyntacticMatches, 2 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3453 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=6871, Invalid=13721, Unknown=0, NotChecked=0, Total=20592 [2022-04-05 05:34:14,807 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 170 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1278 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 1679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 1278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-05 05:34:14,807 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 55 Invalid, 1679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [401 Valid, 1278 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-05 05:34:14,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2022-04-05 05:34:14,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 536. [2022-04-05 05:34:14,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 400 states have (on average 1.005) internal successors, (402), 401 states have internal predecessors, (402), 68 states have call successors, (68), 68 states have call predecessors, (68), 67 states have return successors, (67), 66 states have call predecessors, (67), 67 states have call successors, (67) [2022-04-05 05:34:14,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 537 transitions. [2022-04-05 05:34:14,892 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 537 transitions. Word has length 526 [2022-04-05 05:34:14,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:34:14,892 INFO L478 AbstractCegarLoop]: Abstraction has 536 states and 537 transitions. [2022-04-05 05:34:14,892 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 2.8378378378378377) internal successors, (210), 71 states have internal predecessors, (210), 66 states have call successors, (69), 4 states have call predecessors, (69), 1 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2022-04-05 05:34:14,892 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 537 transitions. [2022-04-05 05:34:14,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2022-04-05 05:34:14,894 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:34:14,894 INFO L499 BasicCegarLoop]: trace histogram [66, 66, 66, 65, 65, 65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:34:14,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Forceful destruction successful, exit code 0 [2022-04-05 05:34:15,095 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable130 [2022-04-05 05:34:15,095 INFO L403 AbstractCegarLoop]: === Iteration 132 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:34:15,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:34:15,095 INFO L85 PathProgramCache]: Analyzing trace with hash 807734301, now seen corresponding path program 129 times [2022-04-05 05:34:15,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:34:15,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21388187] [2022-04-05 05:34:15,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:34:15,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:34:15,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:19,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:34:19,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:19,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-04-05 05:34:19,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:19,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-04-05 05:34:19,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:19,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-04-05 05:34:19,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:19,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-04-05 05:34:19,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:19,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-04-05 05:34:19,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:19,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-04-05 05:34:19,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:19,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-04-05 05:34:19,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:19,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-04-05 05:34:19,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:19,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-04-05 05:34:19,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:19,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-04-05 05:34:19,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:19,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-04-05 05:34:19,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:19,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-04-05 05:34:19,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:19,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-04-05 05:34:19,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:19,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-04-05 05:34:19,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:19,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-04-05 05:34:19,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:19,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-04-05 05:34:19,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:19,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-04-05 05:34:19,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:19,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-04-05 05:34:19,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:19,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-04-05 05:34:19,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:19,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-04-05 05:34:19,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:19,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-04-05 05:34:19,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:19,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-04-05 05:34:19,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:19,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-04-05 05:34:19,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:19,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-04-05 05:34:19,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:19,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-04-05 05:34:19,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:19,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-04-05 05:34:19,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:19,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-04-05 05:34:19,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:19,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-04-05 05:34:19,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:19,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-04-05 05:34:19,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:19,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-04-05 05:34:19,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:19,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-04-05 05:34:19,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:19,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-04-05 05:34:19,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:19,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-04-05 05:34:19,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:19,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2022-04-05 05:34:19,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:19,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-04-05 05:34:19,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:19,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-04-05 05:34:19,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:19,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-04-05 05:34:19,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:19,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-04-05 05:34:19,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:19,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-04-05 05:34:19,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:19,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2022-04-05 05:34:19,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:19,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-04-05 05:34:19,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:19,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2022-04-05 05:34:19,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:19,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-04-05 05:34:19,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:19,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-04-05 05:34:19,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:19,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-04-05 05:34:19,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:19,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-04-05 05:34:19,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:19,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-04-05 05:34:19,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:19,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2022-04-05 05:34:19,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:19,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-04-05 05:34:19,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:19,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2022-04-05 05:34:19,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:19,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2022-04-05 05:34:19,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:19,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-04-05 05:34:19,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:19,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-04-05 05:34:19,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:19,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-04-05 05:34:19,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:19,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2022-04-05 05:34:19,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:19,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2022-04-05 05:34:19,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:19,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2022-04-05 05:34:19,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:19,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 473 [2022-04-05 05:34:19,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:19,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2022-04-05 05:34:19,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:19,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2022-04-05 05:34:19,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:19,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2022-04-05 05:34:19,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:19,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2022-04-05 05:34:19,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:19,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2022-04-05 05:34:19,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:19,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 515 [2022-04-05 05:34:19,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:19,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 522 [2022-04-05 05:34:19,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:19,437 INFO L134 CoverageAnalysis]: Checked inductivity of 16965 backedges. 6307 proven. 2338 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2022-04-05 05:34:19,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:34:19,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21388187] [2022-04-05 05:34:19,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21388187] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:34:19,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972075126] [2022-04-05 05:34:19,438 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-05 05:34:19,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:34:19,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:34:19,438 INFO L229 MonitoredProcess]: Starting monitored process 131 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:34:19,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Waiting until timeout for monitored process [2022-04-05 05:34:19,779 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 66 check-sat command(s) [2022-04-05 05:34:19,779 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:34:19,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 1291 conjuncts, 134 conjunts are in the unsatisfiable core [2022-04-05 05:34:19,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:34:25,735 INFO L134 CoverageAnalysis]: Checked inductivity of 16965 backedges. 6500 proven. 2145 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2022-04-05 05:34:25,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:34:26,598 INFO L134 CoverageAnalysis]: Checked inductivity of 16965 backedges. 6500 proven. 2145 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2022-04-05 05:34:26,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972075126] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:34:26,598 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:34:26,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [136, 135, 135] total 204 [2022-04-05 05:34:26,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565604597] [2022-04-05 05:34:26,599 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:34:26,599 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 204 states [2022-04-05 05:34:26,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:34:26,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 204 interpolants. [2022-04-05 05:34:26,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9186, Invalid=32226, Unknown=0, NotChecked=0, Total=41412 [2022-04-05 05:34:26,602 INFO L87 Difference]: Start difference. First operand 536 states and 537 transitions. Second operand has 204 states, 204 states have (on average 1.6911764705882353) internal successors, (345), 203 states have internal predecessors, (345), 133 states have call successors, (135), 3 states have call predecessors, (135), 1 states have return successors, (132), 132 states have call predecessors, (132), 132 states have call successors, (132) [2022-04-05 05:34:32,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:34:32,329 INFO L93 Difference]: Finished difference Result 743 states and 810 transitions. [2022-04-05 05:34:32,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2022-04-05 05:34:32,330 INFO L78 Accepts]: Start accepts. Automaton has has 204 states, 204 states have (on average 1.6911764705882353) internal successors, (345), 203 states have internal predecessors, (345), 133 states have call successors, (135), 3 states have call predecessors, (135), 1 states have return successors, (132), 132 states have call predecessors, (132), 132 states have call successors, (132) Word has length 533 [2022-04-05 05:34:32,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:34:32,331 INFO L225 Difference]: With dead ends: 743 [2022-04-05 05:34:32,331 INFO L226 Difference]: Without dead ends: 537 [2022-04-05 05:34:32,335 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1465 GetRequests, 1129 SyntacticMatches, 1 SemanticMatches, 335 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31469 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=20712, Invalid=92520, Unknown=0, NotChecked=0, Total=113232 [2022-04-05 05:34:32,336 INFO L913 BasicCegarLoop]: 77 mSDtfsCounter, 21 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 2528 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 2806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 2528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-05 05:34:32,336 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 109 Invalid, 2806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [278 Valid, 2528 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-05 05:34:32,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2022-04-05 05:34:32,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 537. [2022-04-05 05:34:32,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 401 states have (on average 1.0049875311720697) internal successors, (403), 402 states have internal predecessors, (403), 68 states have call successors, (68), 68 states have call predecessors, (68), 67 states have return successors, (67), 66 states have call predecessors, (67), 67 states have call successors, (67) [2022-04-05 05:34:32,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 538 transitions. [2022-04-05 05:34:32,407 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 538 transitions. Word has length 533 [2022-04-05 05:34:32,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:34:32,407 INFO L478 AbstractCegarLoop]: Abstraction has 537 states and 538 transitions. [2022-04-05 05:34:32,408 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 204 states, 204 states have (on average 1.6911764705882353) internal successors, (345), 203 states have internal predecessors, (345), 133 states have call successors, (135), 3 states have call predecessors, (135), 1 states have return successors, (132), 132 states have call predecessors, (132), 132 states have call successors, (132) [2022-04-05 05:34:32,408 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 538 transitions. [2022-04-05 05:34:32,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2022-04-05 05:34:32,410 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:34:32,410 INFO L499 BasicCegarLoop]: trace histogram [66, 66, 66, 66, 65, 65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:34:32,427 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Ended with exit code 0 [2022-04-05 05:34:32,610 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,131 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:34:32,610 INFO L403 AbstractCegarLoop]: === Iteration 133 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:34:32,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:34:32,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1177585503, now seen corresponding path program 130 times [2022-04-05 05:34:32,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:34:32,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720193738] [2022-04-05 05:34:32,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:34:32,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:34:32,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:34,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:34:34,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:34,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-04-05 05:34:34,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:34,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-04-05 05:34:34,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:34,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-04-05 05:34:34,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:34,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-04-05 05:34:34,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:34,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-04-05 05:34:34,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:34,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-04-05 05:34:34,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:34,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-04-05 05:34:34,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:34,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-04-05 05:34:34,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:34,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-04-05 05:34:34,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:34,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-04-05 05:34:34,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:34,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-04-05 05:34:34,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:34,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-04-05 05:34:34,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:34,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-04-05 05:34:34,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:34,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-04-05 05:34:34,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:34,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-04-05 05:34:34,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:34,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-04-05 05:34:34,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:34,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-04-05 05:34:34,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:34,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-04-05 05:34:34,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:34,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-04-05 05:34:34,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:34,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-04-05 05:34:34,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:34,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-04-05 05:34:34,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:34,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-04-05 05:34:34,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:34,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-04-05 05:34:34,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:34,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-04-05 05:34:34,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:34,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-04-05 05:34:34,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:34,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-04-05 05:34:34,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:34,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-04-05 05:34:34,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:34,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-04-05 05:34:34,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:34,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-04-05 05:34:34,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:34,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-04-05 05:34:34,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:34,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-04-05 05:34:34,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:34,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-04-05 05:34:34,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:34,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-04-05 05:34:34,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:34,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-04-05 05:34:34,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:34,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2022-04-05 05:34:34,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:34,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-04-05 05:34:34,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:34,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-04-05 05:34:34,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:34,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-04-05 05:34:34,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:34,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-04-05 05:34:34,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:34,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-04-05 05:34:34,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:34,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2022-04-05 05:34:34,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:34,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-04-05 05:34:34,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:34,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2022-04-05 05:34:34,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:34,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-04-05 05:34:34,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:34,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-04-05 05:34:34,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:34,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-04-05 05:34:34,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:34,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-04-05 05:34:34,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:34,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-04-05 05:34:34,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:34,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2022-04-05 05:34:34,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:34,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-04-05 05:34:34,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:34,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2022-04-05 05:34:34,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:34,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2022-04-05 05:34:34,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:34,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-04-05 05:34:34,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:34,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2022-04-05 05:34:34,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:34,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2022-04-05 05:34:34,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:34,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2022-04-05 05:34:34,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:34,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2022-04-05 05:34:34,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:34,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2022-04-05 05:34:34,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:34,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2022-04-05 05:34:34,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:34,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2022-04-05 05:34:34,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:34,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2022-04-05 05:34:34,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:34,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2022-04-05 05:34:34,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:34,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2022-04-05 05:34:34,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:34,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2022-04-05 05:34:34,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:34,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2022-04-05 05:34:34,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:34,374 INFO L134 CoverageAnalysis]: Checked inductivity of 17031 backedges. 2275 proven. 6436 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2022-04-05 05:34:34,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:34:34,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720193738] [2022-04-05 05:34:34,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720193738] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:34:34,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980576686] [2022-04-05 05:34:34,374 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-05 05:34:34,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:34:34,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:34:34,375 INFO L229 MonitoredProcess]: Starting monitored process 132 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:34:34,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Waiting until timeout for monitored process [2022-04-05 05:34:34,544 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-05 05:34:34,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:34:34,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 1296 conjuncts, 135 conjunts are in the unsatisfiable core [2022-04-05 05:34:34,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:34:35,283 INFO L134 CoverageAnalysis]: Checked inductivity of 17031 backedges. 2341 proven. 6370 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2022-04-05 05:34:35,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:34:36,069 INFO L134 CoverageAnalysis]: Checked inductivity of 17031 backedges. 2341 proven. 6370 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2022-04-05 05:34:36,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [980576686] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:34:36,070 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:34:36,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 71, 71] total 75 [2022-04-05 05:34:36,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918228754] [2022-04-05 05:34:36,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:34:36,070 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2022-04-05 05:34:36,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:34:36,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2022-04-05 05:34:36,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2361, Invalid=3189, Unknown=0, NotChecked=0, Total=5550 [2022-04-05 05:34:36,071 INFO L87 Difference]: Start difference. First operand 537 states and 538 transitions. Second operand has 75 states, 75 states have (on average 2.84) internal successors, (213), 72 states have internal predecessors, (213), 67 states have call successors, (70), 4 states have call predecessors, (70), 1 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2022-04-05 05:34:37,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:34:37,885 INFO L93 Difference]: Finished difference Result 550 states and 552 transitions. [2022-04-05 05:34:37,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-04-05 05:34:37,885 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 2.84) internal successors, (213), 72 states have internal predecessors, (213), 67 states have call successors, (70), 4 states have call predecessors, (70), 1 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) Word has length 534 [2022-04-05 05:34:37,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:34:37,887 INFO L225 Difference]: With dead ends: 550 [2022-04-05 05:34:37,887 INFO L226 Difference]: Without dead ends: 548 [2022-04-05 05:34:37,889 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1407 GetRequests, 1261 SyntacticMatches, 2 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3539 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=7075, Invalid=14095, Unknown=0, NotChecked=0, Total=21170 [2022-04-05 05:34:37,889 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 163 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 1291 mSolverCounterSat, 407 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 1698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 407 IncrementalHoareTripleChecker+Valid, 1291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-05 05:34:37,889 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [164 Valid, 40 Invalid, 1698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [407 Valid, 1291 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-05 05:34:37,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2022-04-05 05:34:37,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 544. [2022-04-05 05:34:37,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 406 states have (on average 1.0049261083743843) internal successors, (408), 407 states have internal predecessors, (408), 69 states have call successors, (69), 69 states have call predecessors, (69), 68 states have return successors, (68), 67 states have call predecessors, (68), 68 states have call successors, (68) [2022-04-05 05:34:37,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 545 transitions. [2022-04-05 05:34:37,982 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 545 transitions. Word has length 534 [2022-04-05 05:34:37,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:34:37,983 INFO L478 AbstractCegarLoop]: Abstraction has 544 states and 545 transitions. [2022-04-05 05:34:37,983 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 2.84) internal successors, (213), 72 states have internal predecessors, (213), 67 states have call successors, (70), 4 states have call predecessors, (70), 1 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2022-04-05 05:34:37,983 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 545 transitions. [2022-04-05 05:34:37,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2022-04-05 05:34:37,986 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:34:37,986 INFO L499 BasicCegarLoop]: trace histogram [67, 67, 67, 66, 66, 66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:34:38,004 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Forceful destruction successful, exit code 0 [2022-04-05 05:34:38,187 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,132 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:34:38,187 INFO L403 AbstractCegarLoop]: === Iteration 134 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:34:38,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:34:38,187 INFO L85 PathProgramCache]: Analyzing trace with hash -594039463, now seen corresponding path program 131 times [2022-04-05 05:34:38,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:34:38,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266396620] [2022-04-05 05:34:38,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:34:38,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:34:38,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:42,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:34:42,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:42,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-04-05 05:34:42,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:42,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-04-05 05:34:42,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:42,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-04-05 05:34:42,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:42,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-04-05 05:34:42,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:42,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-04-05 05:34:42,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:42,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-04-05 05:34:42,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:42,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-04-05 05:34:42,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:42,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-04-05 05:34:42,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:42,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-04-05 05:34:42,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:42,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-04-05 05:34:42,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:42,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-04-05 05:34:42,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:42,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-04-05 05:34:42,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:42,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-04-05 05:34:42,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:42,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-04-05 05:34:42,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:42,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-04-05 05:34:42,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:42,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-04-05 05:34:42,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:42,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-04-05 05:34:42,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:42,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-04-05 05:34:42,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:42,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-04-05 05:34:42,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:42,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-04-05 05:34:42,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:42,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-04-05 05:34:42,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:42,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-04-05 05:34:42,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:42,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-04-05 05:34:42,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:42,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-04-05 05:34:42,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:42,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-04-05 05:34:42,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:42,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-04-05 05:34:42,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:42,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-04-05 05:34:42,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:42,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-04-05 05:34:42,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:42,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-04-05 05:34:42,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:42,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-04-05 05:34:42,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:42,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-04-05 05:34:42,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:42,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-04-05 05:34:42,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:42,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-04-05 05:34:42,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:42,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-04-05 05:34:42,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:42,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2022-04-05 05:34:42,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:42,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-04-05 05:34:42,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:42,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-04-05 05:34:42,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:42,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-04-05 05:34:42,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:42,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-04-05 05:34:42,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:42,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-04-05 05:34:42,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:42,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2022-04-05 05:34:42,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:42,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-04-05 05:34:42,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:42,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2022-04-05 05:34:42,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:42,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-04-05 05:34:42,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:42,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-04-05 05:34:42,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:42,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-04-05 05:34:42,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:42,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-04-05 05:34:42,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:42,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-04-05 05:34:42,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:42,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2022-04-05 05:34:42,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:42,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-04-05 05:34:42,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:42,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2022-04-05 05:34:42,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:42,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2022-04-05 05:34:42,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:42,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-04-05 05:34:42,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:42,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2022-04-05 05:34:42,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:42,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2022-04-05 05:34:42,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:42,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2022-04-05 05:34:42,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:42,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2022-04-05 05:34:42,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:42,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2022-04-05 05:34:42,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:42,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2022-04-05 05:34:42,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:42,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2022-04-05 05:34:42,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:42,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2022-04-05 05:34:42,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:42,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2022-04-05 05:34:42,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:42,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2022-04-05 05:34:42,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:42,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2022-04-05 05:34:42,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:42,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2022-04-05 05:34:42,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:42,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 530 [2022-04-05 05:34:42,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:42,630 INFO L134 CoverageAnalysis]: Checked inductivity of 17490 backedges. 6503 proven. 2407 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2022-04-05 05:34:42,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:34:42,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266396620] [2022-04-05 05:34:42,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266396620] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:34:42,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470844644] [2022-04-05 05:34:42,630 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-05 05:34:42,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:34:42,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:34:42,631 INFO L229 MonitoredProcess]: Starting monitored process 133 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:34:42,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Waiting until timeout for monitored process [2022-04-05 05:34:42,913 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 67 check-sat command(s) [2022-04-05 05:34:42,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:34:42,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 1310 conjuncts, 136 conjunts are in the unsatisfiable core [2022-04-05 05:34:42,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:34:49,031 INFO L134 CoverageAnalysis]: Checked inductivity of 17490 backedges. 6699 proven. 2211 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2022-04-05 05:34:49,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:34:49,865 INFO L134 CoverageAnalysis]: Checked inductivity of 17490 backedges. 6699 proven. 2211 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2022-04-05 05:34:49,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470844644] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:34:49,865 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:34:49,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [138, 137, 137] total 207 [2022-04-05 05:34:49,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913601550] [2022-04-05 05:34:49,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:34:49,867 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 207 states [2022-04-05 05:34:49,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:34:49,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 207 interpolants. [2022-04-05 05:34:49,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9459, Invalid=33183, Unknown=0, NotChecked=0, Total=42642 [2022-04-05 05:34:49,872 INFO L87 Difference]: Start difference. First operand 544 states and 545 transitions. Second operand has 207 states, 207 states have (on average 1.6908212560386473) internal successors, (350), 206 states have internal predecessors, (350), 135 states have call successors, (137), 3 states have call predecessors, (137), 1 states have return successors, (134), 134 states have call predecessors, (134), 134 states have call successors, (134) [2022-04-05 05:34:56,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:34:56,313 INFO L93 Difference]: Finished difference Result 754 states and 822 transitions. [2022-04-05 05:34:56,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2022-04-05 05:34:56,313 INFO L78 Accepts]: Start accepts. Automaton has has 207 states, 207 states have (on average 1.6908212560386473) internal successors, (350), 206 states have internal predecessors, (350), 135 states have call successors, (137), 3 states have call predecessors, (137), 1 states have return successors, (134), 134 states have call predecessors, (134), 134 states have call successors, (134) Word has length 541 [2022-04-05 05:34:56,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:34:56,314 INFO L225 Difference]: With dead ends: 754 [2022-04-05 05:34:56,314 INFO L226 Difference]: Without dead ends: 545 [2022-04-05 05:34:56,319 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1487 GetRequests, 1146 SyntacticMatches, 1 SemanticMatches, 340 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32415 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=21327, Invalid=95295, Unknown=0, NotChecked=0, Total=116622 [2022-04-05 05:34:56,320 INFO L913 BasicCegarLoop]: 78 mSDtfsCounter, 21 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 4383 mSolverCounterSat, 279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 4662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 4383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-04-05 05:34:56,320 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 150 Invalid, 4662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [279 Valid, 4383 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-04-05 05:34:56,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2022-04-05 05:34:56,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 545. [2022-04-05 05:34:56,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 407 states have (on average 1.0049140049140048) internal successors, (409), 408 states have internal predecessors, (409), 69 states have call successors, (69), 69 states have call predecessors, (69), 68 states have return successors, (68), 67 states have call predecessors, (68), 68 states have call successors, (68) [2022-04-05 05:34:56,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 546 transitions. [2022-04-05 05:34:56,390 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 546 transitions. Word has length 541 [2022-04-05 05:34:56,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:34:56,390 INFO L478 AbstractCegarLoop]: Abstraction has 545 states and 546 transitions. [2022-04-05 05:34:56,390 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 207 states, 207 states have (on average 1.6908212560386473) internal successors, (350), 206 states have internal predecessors, (350), 135 states have call successors, (137), 3 states have call predecessors, (137), 1 states have return successors, (134), 134 states have call predecessors, (134), 134 states have call successors, (134) [2022-04-05 05:34:56,390 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 546 transitions. [2022-04-05 05:34:56,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2022-04-05 05:34:56,392 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:34:56,392 INFO L499 BasicCegarLoop]: trace histogram [67, 67, 67, 67, 66, 66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:34:56,411 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Ended with exit code 0 [2022-04-05 05:34:56,593 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2022-04-05 05:34:56,593 INFO L403 AbstractCegarLoop]: === Iteration 135 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:34:56,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:34:56,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1851741661, now seen corresponding path program 132 times [2022-04-05 05:34:56,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:34:56,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718020117] [2022-04-05 05:34:56,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:34:56,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:34:56,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:58,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:34:58,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:58,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-04-05 05:34:58,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:58,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-04-05 05:34:58,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:58,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-04-05 05:34:58,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:58,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-04-05 05:34:58,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:58,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-04-05 05:34:58,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:58,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-04-05 05:34:58,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:58,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-04-05 05:34:58,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:58,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-04-05 05:34:58,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:58,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-04-05 05:34:58,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:58,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-04-05 05:34:58,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:58,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-04-05 05:34:58,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:58,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-04-05 05:34:58,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:58,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-04-05 05:34:58,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:58,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-04-05 05:34:58,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:58,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-04-05 05:34:58,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:58,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-04-05 05:34:58,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:58,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-04-05 05:34:58,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:58,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-04-05 05:34:58,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:58,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-04-05 05:34:58,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:58,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-04-05 05:34:58,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:58,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-04-05 05:34:58,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:58,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-04-05 05:34:58,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:58,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-04-05 05:34:58,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:58,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-04-05 05:34:58,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:58,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-04-05 05:34:58,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:58,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-04-05 05:34:58,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:58,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-04-05 05:34:58,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:58,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-04-05 05:34:58,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:58,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-04-05 05:34:58,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:58,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-04-05 05:34:58,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:58,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-04-05 05:34:58,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:58,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-04-05 05:34:58,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:58,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-04-05 05:34:58,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:58,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-04-05 05:34:58,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:58,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-04-05 05:34:58,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:58,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-04-05 05:34:58,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:58,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-04-05 05:34:58,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:58,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-04-05 05:34:58,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:58,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-04-05 05:34:58,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:58,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-04-05 05:34:58,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:58,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-04-05 05:34:58,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:58,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2022-04-05 05:34:58,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:58,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-04-05 05:34:58,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:58,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2022-04-05 05:34:58,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:58,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-04-05 05:34:58,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:58,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-04-05 05:34:58,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:58,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-04-05 05:34:58,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:58,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-04-05 05:34:58,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:58,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-04-05 05:34:58,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:58,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2022-04-05 05:34:58,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:58,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-04-05 05:34:58,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:58,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2022-04-05 05:34:58,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:58,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2022-04-05 05:34:58,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:58,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2022-04-05 05:34:58,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:58,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2022-04-05 05:34:58,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:58,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2022-04-05 05:34:58,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:58,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2022-04-05 05:34:58,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:58,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2022-04-05 05:34:58,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:58,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2022-04-05 05:34:58,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:58,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 489 [2022-04-05 05:34:58,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:58,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2022-04-05 05:34:58,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:58,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2022-04-05 05:34:58,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:58,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 510 [2022-04-05 05:34:58,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:58,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2022-04-05 05:34:58,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:58,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 524 [2022-04-05 05:34:58,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:58,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 531 [2022-04-05 05:34:58,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:34:58,347 INFO L134 CoverageAnalysis]: Checked inductivity of 17557 backedges. 2343 proven. 6634 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2022-04-05 05:34:58,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:34:58,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718020117] [2022-04-05 05:34:58,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718020117] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:34:58,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563171804] [2022-04-05 05:34:58,347 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-05 05:34:58,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:34:58,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:34:58,348 INFO L229 MonitoredProcess]: Starting monitored process 134 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:34:58,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Waiting until timeout for monitored process [2022-04-05 05:34:58,656 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 67 check-sat command(s) [2022-04-05 05:34:58,656 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:34:58,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 1315 conjuncts, 137 conjunts are in the unsatisfiable core [2022-04-05 05:34:58,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:34:59,396 INFO L134 CoverageAnalysis]: Checked inductivity of 17557 backedges. 2410 proven. 6567 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2022-04-05 05:34:59,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:35:00,188 INFO L134 CoverageAnalysis]: Checked inductivity of 17557 backedges. 2410 proven. 6567 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2022-04-05 05:35:00,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563171804] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:35:00,188 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:35:00,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 72, 72] total 76 [2022-04-05 05:35:00,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833755377] [2022-04-05 05:35:00,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:35:00,189 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2022-04-05 05:35:00,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:35:00,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2022-04-05 05:35:00,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2430, Invalid=3270, Unknown=0, NotChecked=0, Total=5700 [2022-04-05 05:35:00,190 INFO L87 Difference]: Start difference. First operand 545 states and 546 transitions. Second operand has 76 states, 76 states have (on average 2.8421052631578947) internal successors, (216), 73 states have internal predecessors, (216), 68 states have call successors, (71), 4 states have call predecessors, (71), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2022-04-05 05:35:02,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:35:02,158 INFO L93 Difference]: Finished difference Result 558 states and 560 transitions. [2022-04-05 05:35:02,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-04-05 05:35:02,158 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 2.8421052631578947) internal successors, (216), 73 states have internal predecessors, (216), 68 states have call successors, (71), 4 states have call predecessors, (71), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) Word has length 542 [2022-04-05 05:35:02,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:35:02,159 INFO L225 Difference]: With dead ends: 558 [2022-04-05 05:35:02,159 INFO L226 Difference]: Without dead ends: 556 [2022-04-05 05:35:02,160 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1428 GetRequests, 1280 SyntacticMatches, 2 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3626 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=7282, Invalid=14474, Unknown=0, NotChecked=0, Total=21756 [2022-04-05 05:35:02,160 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 165 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1616 mSolverCounterSat, 413 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 2029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 413 IncrementalHoareTripleChecker+Valid, 1616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-05 05:35:02,161 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 80 Invalid, 2029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [413 Valid, 1616 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-05 05:35:02,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2022-04-05 05:35:02,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 552. [2022-04-05 05:35:02,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 412 states have (on average 1.0048543689320388) internal successors, (414), 413 states have internal predecessors, (414), 70 states have call successors, (70), 70 states have call predecessors, (70), 69 states have return successors, (69), 68 states have call predecessors, (69), 69 states have call successors, (69) [2022-04-05 05:35:02,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 553 transitions. [2022-04-05 05:35:02,262 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 553 transitions. Word has length 542 [2022-04-05 05:35:02,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:35:02,263 INFO L478 AbstractCegarLoop]: Abstraction has 552 states and 553 transitions. [2022-04-05 05:35:02,263 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 2.8421052631578947) internal successors, (216), 73 states have internal predecessors, (216), 68 states have call successors, (71), 4 states have call predecessors, (71), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2022-04-05 05:35:02,263 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 553 transitions. [2022-04-05 05:35:02,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2022-04-05 05:35:02,266 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:35:02,266 INFO L499 BasicCegarLoop]: trace histogram [68, 68, 68, 67, 67, 67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:35:02,298 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Forceful destruction successful, exit code 0 [2022-04-05 05:35:02,479 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 134 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2022-04-05 05:35:02,479 INFO L403 AbstractCegarLoop]: === Iteration 136 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:35:02,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:35:02,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1974187165, now seen corresponding path program 133 times [2022-04-05 05:35:02,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:35:02,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400514638] [2022-04-05 05:35:02,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:35:02,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:35:02,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat