/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/fragtest_simple.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7390193 [2022-04-05 05:19:35,607 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-05 05:19:35,609 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-05 05:19:35,649 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-05 05:19:35,668 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-05 05:19:35,670 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-05 05:19:35,671 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-05 05:19:35,674 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-05 05:19:35,674 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-05 05:19:35,675 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-05 05:19:35,677 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-05 05:19:35,682 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-05 05:19:35,684 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-05 05:19:35,685 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-05 05:19:35,686 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-05 05:19:35,686 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-05 05:19:35,699 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-05 05:19:35,701 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-05 05:19:35,706 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-05 05:19:35,706 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-05 05:19:35,708 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-05 05:19:35,708 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 05:19:35,729 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-05 05:19:35,729 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-05 05:19:35,730 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-05 05:19:35,730 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-05 05:19:35,731 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-05 05:19:35,731 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-05 05:19:35,731 INFO L138 SettingsManager]: * Use SBE=true [2022-04-05 05:19:35,731 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-05 05:19:35,731 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-05 05:19:35,732 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-05 05:19:35,732 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-05 05:19:35,732 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-05 05:19:35,732 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-05 05:19:35,732 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-05 05:19:35,732 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-05 05:19:35,732 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-05 05:19:35,732 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-05 05:19:35,732 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-05 05:19:35,733 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-05 05:19:35,733 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-05 05:19:35,733 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-05 05:19:35,733 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-05 05:19:35,733 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-05 05:19:35,733 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-05 05:19:35,733 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-05 05:19:35,733 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-05 05:19:35,733 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-04-05 05:19:35,733 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-04-05 05:19:35,734 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-05 05:19:35,734 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-05 05:19:35,915 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-05 05:19:35,942 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-05 05:19:35,944 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-05 05:19:35,945 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-05 05:19:35,946 INFO L275 PluginConnector]: CDTParser initialized [2022-04-05 05:19:35,947 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/fragtest_simple.i [2022-04-05 05:19:35,994 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85cf0317d/936686432179486b8a34c18b00414048/FLAG3fb8a6349 [2022-04-05 05:19:36,347 INFO L306 CDTParser]: Found 1 translation units. [2022-04-05 05:19:36,347 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/fragtest_simple.i [2022-04-05 05:19:36,351 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85cf0317d/936686432179486b8a34c18b00414048/FLAG3fb8a6349 [2022-04-05 05:19:36,358 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85cf0317d/936686432179486b8a34c18b00414048 [2022-04-05 05:19:36,360 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-05 05:19:36,361 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-05 05:19:36,362 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-05 05:19:36,362 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-05 05:19:36,364 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-05 05:19:36,364 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 05:19:36" (1/1) ... [2022-04-05 05:19:36,365 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a0b0487 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 05:19:36, skipping insertion in model container [2022-04-05 05:19:36,365 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 05:19:36" (1/1) ... [2022-04-05 05:19:36,369 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-05 05:19:36,377 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-05 05:19:36,518 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/fragtest_simple.i[893,906] [2022-04-05 05:19:36,528 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-05 05:19:36,534 INFO L203 MainTranslator]: Completed pre-run [2022-04-05 05:19:36,542 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/fragtest_simple.i[893,906] [2022-04-05 05:19:36,545 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-05 05:19:36,554 INFO L208 MainTranslator]: Completed translation [2022-04-05 05:19:36,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 05:19:36 WrapperNode [2022-04-05 05:19:36,555 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-05 05:19:36,557 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-05 05:19:36,557 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-05 05:19:36,557 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-05 05:19:36,564 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 05:19:36" (1/1) ... [2022-04-05 05:19:36,564 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 05:19:36" (1/1) ... [2022-04-05 05:19:36,568 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 05:19:36" (1/1) ... [2022-04-05 05:19:36,568 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 05:19:36" (1/1) ... [2022-04-05 05:19:36,571 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 05:19:36" (1/1) ... [2022-04-05 05:19:36,574 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 05:19:36" (1/1) ... [2022-04-05 05:19:36,574 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 05:19:36" (1/1) ... [2022-04-05 05:19:36,575 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-05 05:19:36,576 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-05 05:19:36,576 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-05 05:19:36,576 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-05 05:19:36,577 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 05:19:36" (1/1) ... [2022-04-05 05:19:36,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-05 05:19:36,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:19:36,610 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 05:19:36,613 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 05:19:36,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-05 05:19:36,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-05 05:19:36,639 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-05 05:19:36,639 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-05 05:19:36,639 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-05 05:19:36,640 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-05 05:19:36,640 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-05 05:19:36,641 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-05 05:19:36,641 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-04-05 05:19:36,641 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-04-05 05:19:36,641 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-05 05:19:36,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-05 05:19:36,642 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-05 05:19:36,642 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-05 05:19:36,642 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-05 05:19:36,642 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-05 05:19:36,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-05 05:19:36,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-05 05:19:36,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-05 05:19:36,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-05 05:19:36,645 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-05 05:19:36,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-05 05:19:36,711 INFO L234 CfgBuilder]: Building ICFG [2022-04-05 05:19:36,712 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-05 05:19:36,820 INFO L275 CfgBuilder]: Performing block encoding [2022-04-05 05:19:36,824 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-05 05:19:36,824 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-04-05 05:19:36,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 05:19:36 BoogieIcfgContainer [2022-04-05 05:19:36,825 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-05 05:19:36,826 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-05 05:19:36,826 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-05 05:19:36,827 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-05 05:19:36,829 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 05:19:36" (1/1) ... [2022-04-05 05:19:36,836 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_QVASR [2022-04-05 05:19:36,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 05.04 05:19:36 BasicIcfg [2022-04-05 05:19:36,845 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-05 05:19:36,846 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-05 05:19:36,846 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-05 05:19:36,848 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-05 05:19:36,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.04 05:19:36" (1/4) ... [2022-04-05 05:19:36,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2566ecd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 05:19:36, skipping insertion in model container [2022-04-05 05:19:36,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 05:19:36" (2/4) ... [2022-04-05 05:19:36,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2566ecd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 05:19:36, skipping insertion in model container [2022-04-05 05:19:36,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 05:19:36" (3/4) ... [2022-04-05 05:19:36,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2566ecd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.04 05:19:36, skipping insertion in model container [2022-04-05 05:19:36,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 05.04 05:19:36" (4/4) ... [2022-04-05 05:19:36,850 INFO L111 eAbstractionObserver]: Analyzing ICFG fragtest_simple.iqvasr [2022-04-05 05:19:36,853 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-05 05:19:36,853 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-05 05:19:36,881 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-05 05:19:36,889 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 05:19:36,889 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-05 05:19:36,901 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 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 05:19:36,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-04-05 05:19:36,904 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:19:36,904 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:19:36,905 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:19:36,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:19:36,908 INFO L85 PathProgramCache]: Analyzing trace with hash -315946225, now seen corresponding path program 1 times [2022-04-05 05:19:36,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:19:36,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822416191] [2022-04-05 05:19:36,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:19:36,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:19:36,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:37,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:19:37,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:37,010 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 05:19:37,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:19:37,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822416191] [2022-04-05 05:19:37,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822416191] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 05:19:37,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 05:19:37,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-05 05:19:37,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167000409] [2022-04-05 05:19:37,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 05:19:37,015 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-05 05:19:37,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:19:37,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-05 05:19:37,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-05 05:19:37,034 INFO L87 Difference]: Start difference. First operand has 28 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 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 4.0) internal successors, (12), 2 states have internal predecessors, (12), 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 05:19:37,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:19:37,056 INFO L93 Difference]: Finished difference Result 48 states and 63 transitions. [2022-04-05 05:19:37,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-05 05:19:37,070 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 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 16 [2022-04-05 05:19:37,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:19:37,076 INFO L225 Difference]: With dead ends: 48 [2022-04-05 05:19:37,077 INFO L226 Difference]: Without dead ends: 23 [2022-04-05 05:19:37,079 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 05:19:37,082 INFO L913 BasicCegarLoop]: 30 mSDtfsCounter, 22 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 33 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 05:19:37,083 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 33 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 05:19:37,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-04-05 05:19:37,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-04-05 05:19:37,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 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 05:19:37,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2022-04-05 05:19:37,115 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 16 [2022-04-05 05:19:37,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:19:37,116 INFO L478 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2022-04-05 05:19:37,116 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 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 05:19:37,116 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2022-04-05 05:19:37,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-04-05 05:19:37,117 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:19:37,117 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:19:37,118 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-05 05:19:37,118 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:19:37,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:19:37,120 INFO L85 PathProgramCache]: Analyzing trace with hash -756014827, now seen corresponding path program 1 times [2022-04-05 05:19:37,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:19:37,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767207685] [2022-04-05 05:19:37,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:19:37,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:19:37,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:37,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:19:37,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:37,235 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 05:19:37,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:19:37,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767207685] [2022-04-05 05:19:37,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767207685] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 05:19:37,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 05:19:37,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-05 05:19:37,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728331148] [2022-04-05 05:19:37,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 05:19:37,237 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-05 05:19:37,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:19:37,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-05 05:19:37,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-04-05 05:19:37,238 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 4 states have internal predecessors, (14), 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 05:19:37,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:19:37,339 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2022-04-05 05:19:37,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-05 05:19:37,340 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 4 states have internal predecessors, (14), 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 18 [2022-04-05 05:19:37,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:19:37,341 INFO L225 Difference]: With dead ends: 32 [2022-04-05 05:19:37,342 INFO L226 Difference]: Without dead ends: 30 [2022-04-05 05:19:37,345 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-04-05 05:19:37,346 INFO L913 BasicCegarLoop]: 21 mSDtfsCounter, 30 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 05:19:37,349 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 38 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 05:19:37,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-04-05 05:19:37,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2022-04-05 05:19:37,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 22 states have internal predecessors, (25), 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 05:19:37,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2022-04-05 05:19:37,360 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 18 [2022-04-05 05:19:37,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:19:37,360 INFO L478 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2022-04-05 05:19:37,360 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 4 states have internal predecessors, (14), 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 05:19:37,360 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2022-04-05 05:19:37,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-04-05 05:19:37,361 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:19:37,361 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:19:37,361 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-05 05:19:37,361 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:19:37,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:19:37,362 INFO L85 PathProgramCache]: Analyzing trace with hash -323876183, now seen corresponding path program 1 times [2022-04-05 05:19:37,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:19:37,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447756265] [2022-04-05 05:19:37,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:19:37,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:19:37,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:37,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:19:37,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:37,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-04-05 05:19:37,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:37,442 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 05:19:37,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:19:37,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447756265] [2022-04-05 05:19:37,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447756265] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 05:19:37,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 05:19:37,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-05 05:19:37,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072592902] [2022-04-05 05:19:37,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 05:19:37,444 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-05 05:19:37,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:19:37,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-05 05:19:37,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-04-05 05:19:37,445 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-05 05:19:37,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:19:37,535 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2022-04-05 05:19:37,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-05 05:19:37,535 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2022-04-05 05:19:37,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:19:37,538 INFO L225 Difference]: With dead ends: 50 [2022-04-05 05:19:37,538 INFO L226 Difference]: Without dead ends: 35 [2022-04-05 05:19:37,540 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-04-05 05:19:37,542 INFO L913 BasicCegarLoop]: 17 mSDtfsCounter, 34 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 05:19:37,542 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 34 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 05:19:37,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-04-05 05:19:37,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2022-04-05 05:19:37,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 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 05:19:37,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2022-04-05 05:19:37,548 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 26 [2022-04-05 05:19:37,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:19:37,548 INFO L478 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2022-04-05 05:19:37,548 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-05 05:19:37,548 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2022-04-05 05:19:37,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-04-05 05:19:37,549 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:19:37,549 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:19:37,549 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-05 05:19:37,549 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:19:37,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:19:37,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1972665292, now seen corresponding path program 1 times [2022-04-05 05:19:37,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:19:37,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082165575] [2022-04-05 05:19:37,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:19:37,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:19:37,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:37,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:19:37,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:37,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-05 05:19:37,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:37,619 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 05:19:37,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:19:37,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082165575] [2022-04-05 05:19:37,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082165575] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:19:37,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753932284] [2022-04-05 05:19:37,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:19:37,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:19:37,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:19:37,621 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 05:19:37,625 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 05:19:37,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:37,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2022-04-05 05:19:37,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:19:37,808 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 05:19:37,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:19:37,885 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 05:19:37,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753932284] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:19:37,886 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:19:37,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 14 [2022-04-05 05:19:37,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434230723] [2022-04-05 05:19:37,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:19:37,887 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-05 05:19:37,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:19:37,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-05 05:19:37,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-04-05 05:19:37,888 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 12 states have internal predecessors, (43), 6 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 05:19:38,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:19:38,149 INFO L93 Difference]: Finished difference Result 65 states and 75 transitions. [2022-04-05 05:19:38,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-04-05 05:19:38,150 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 12 states have internal predecessors, (43), 6 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 28 [2022-04-05 05:19:38,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:19:38,151 INFO L225 Difference]: With dead ends: 65 [2022-04-05 05:19:38,151 INFO L226 Difference]: Without dead ends: 50 [2022-04-05 05:19:38,152 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=488, Unknown=0, NotChecked=0, Total=600 [2022-04-05 05:19:38,158 INFO L913 BasicCegarLoop]: 16 mSDtfsCounter, 82 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 05:19:38,159 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 53 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 05:19:38,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-04-05 05:19:38,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 41. [2022-04-05 05:19:38,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 32 states have internal predecessors, (35), 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 05:19:38,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2022-04-05 05:19:38,181 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 28 [2022-04-05 05:19:38,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:19:38,182 INFO L478 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2022-04-05 05:19:38,182 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 12 states have internal predecessors, (43), 6 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 05:19:38,182 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2022-04-05 05:19:38,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-04-05 05:19:38,184 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:19:38,184 INFO L499 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:19:38,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-05 05:19:38,399 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:19:38,399 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:19:38,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:19:38,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1540710339, now seen corresponding path program 2 times [2022-04-05 05:19:38,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:19:38,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299500590] [2022-04-05 05:19:38,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:19:38,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:19:38,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:38,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:19:38,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:38,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 05:19:38,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:38,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-04-05 05:19:38,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:38,495 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-05 05:19:38,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:19:38,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299500590] [2022-04-05 05:19:38,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299500590] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:19:38,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168971273] [2022-04-05 05:19:38,496 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 05:19:38,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:19:38,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:19:38,497 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 05:19:38,498 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 05:19:38,537 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 05:19:38,538 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:19:38,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 8 conjunts are in the unsatisfiable core [2022-04-05 05:19:38,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:19:38,663 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-05 05:19:38,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:19:38,733 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-05 05:19:38,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168971273] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:19:38,733 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:19:38,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 14 [2022-04-05 05:19:38,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412256209] [2022-04-05 05:19:38,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:19:38,734 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-05 05:19:38,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:19:38,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-05 05:19:38,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-04-05 05:19:38,734 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand has 14 states, 14 states have (on average 3.5) internal successors, (49), 12 states have internal predecessors, (49), 7 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 05:19:38,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:19:38,969 INFO L93 Difference]: Finished difference Result 83 states and 96 transitions. [2022-04-05 05:19:38,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-04-05 05:19:38,969 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 12 states have internal predecessors, (49), 7 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 38 [2022-04-05 05:19:38,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:19:38,970 INFO L225 Difference]: With dead ends: 83 [2022-04-05 05:19:38,970 INFO L226 Difference]: Without dead ends: 64 [2022-04-05 05:19:38,971 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=143, Invalid=559, Unknown=0, NotChecked=0, Total=702 [2022-04-05 05:19:38,971 INFO L913 BasicCegarLoop]: 18 mSDtfsCounter, 79 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 05:19:38,971 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 65 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 05:19:38,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-04-05 05:19:38,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 51. [2022-04-05 05:19:38,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 39 states have (on average 1.1025641025641026) internal successors, (43), 40 states have internal predecessors, (43), 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 05:19:38,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions. [2022-04-05 05:19:38,976 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 54 transitions. Word has length 38 [2022-04-05 05:19:38,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:19:38,976 INFO L478 AbstractCegarLoop]: Abstraction has 51 states and 54 transitions. [2022-04-05 05:19:38,976 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 12 states have internal predecessors, (49), 7 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 05:19:38,976 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 54 transitions. [2022-04-05 05:19:38,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-04-05 05:19:38,977 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:19:38,977 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:19:38,999 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-05 05:19:39,177 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:19:39,178 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:19:39,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:19:39,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1691992838, now seen corresponding path program 3 times [2022-04-05 05:19:39,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:19:39,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408830629] [2022-04-05 05:19:39,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:19:39,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:19:39,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:39,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:19:39,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:39,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-05 05:19:39,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:39,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-05 05:19:39,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:39,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-04-05 05:19:39,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:39,276 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-04-05 05:19:39,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:19:39,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408830629] [2022-04-05 05:19:39,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408830629] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:19:39,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816876257] [2022-04-05 05:19:39,277 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-05 05:19:39,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:19:39,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:19:39,278 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 05:19:39,279 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 05:19:39,313 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-04-05 05:19:39,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:19:39,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 10 conjunts are in the unsatisfiable core [2022-04-05 05:19:39,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:19:39,436 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-04-05 05:19:39,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:19:39,519 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-04-05 05:19:39,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816876257] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:19:39,519 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:19:39,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 17 [2022-04-05 05:19:39,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976607678] [2022-04-05 05:19:39,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:19:39,520 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-04-05 05:19:39,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:19:39,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-04-05 05:19:39,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2022-04-05 05:19:39,521 INFO L87 Difference]: Start difference. First operand 51 states and 54 transitions. Second operand has 17 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 15 states have internal predecessors, (59), 9 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 05:19:39,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:19:39,896 INFO L93 Difference]: Finished difference Result 101 states and 117 transitions. [2022-04-05 05:19:39,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-04-05 05:19:39,897 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 15 states have internal predecessors, (59), 9 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 48 [2022-04-05 05:19:39,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:19:39,897 INFO L225 Difference]: With dead ends: 101 [2022-04-05 05:19:39,897 INFO L226 Difference]: Without dead ends: 78 [2022-04-05 05:19:39,898 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 103 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=219, Invalid=903, Unknown=0, NotChecked=0, Total=1122 [2022-04-05 05:19:39,898 INFO L913 BasicCegarLoop]: 21 mSDtfsCounter, 104 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-05 05:19:39,898 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 68 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-05 05:19:39,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-04-05 05:19:39,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 61. [2022-04-05 05:19:39,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 47 states have (on average 1.0851063829787233) internal successors, (51), 48 states have internal predecessors, (51), 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 05:19:39,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 64 transitions. [2022-04-05 05:19:39,903 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 64 transitions. Word has length 48 [2022-04-05 05:19:39,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:19:39,903 INFO L478 AbstractCegarLoop]: Abstraction has 61 states and 64 transitions. [2022-04-05 05:19:39,904 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 15 states have internal predecessors, (59), 9 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 05:19:39,904 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 64 transitions. [2022-04-05 05:19:39,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-04-05 05:19:39,904 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:19:39,904 INFO L499 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:19:39,929 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 05:19:40,119 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:19:40,119 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:19:40,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:19:40,120 INFO L85 PathProgramCache]: Analyzing trace with hash -445742223, now seen corresponding path program 4 times [2022-04-05 05:19:40,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:19:40,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802266780] [2022-04-05 05:19:40,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:19:40,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:19:40,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:40,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:19:40,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:40,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-04-05 05:19:40,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:40,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-04-05 05:19:40,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:40,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-04-05 05:19:40,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:40,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-04-05 05:19:40,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:40,250 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 31 proven. 29 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-04-05 05:19:40,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:19:40,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802266780] [2022-04-05 05:19:40,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802266780] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:19:40,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945110617] [2022-04-05 05:19:40,250 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-05 05:19:40,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:19:40,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:19:40,251 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 05:19:40,252 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 05:19:40,289 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-05 05:19:40,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:19:40,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 12 conjunts are in the unsatisfiable core [2022-04-05 05:19:40,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:19:40,446 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 28 proven. 32 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-04-05 05:19:40,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:19:40,548 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 28 proven. 32 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-04-05 05:19:40,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945110617] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:19:40,548 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:19:40,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 20 [2022-04-05 05:19:40,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113515368] [2022-04-05 05:19:40,548 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:19:40,549 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-04-05 05:19:40,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:19:40,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-04-05 05:19:40,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2022-04-05 05:19:40,550 INFO L87 Difference]: Start difference. First operand 61 states and 64 transitions. Second operand has 20 states, 20 states have (on average 3.45) internal successors, (69), 18 states have internal predecessors, (69), 11 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 05:19:40,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:19:40,987 INFO L93 Difference]: Finished difference Result 119 states and 138 transitions. [2022-04-05 05:19:40,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-04-05 05:19:40,987 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.45) internal successors, (69), 18 states have internal predecessors, (69), 11 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 58 [2022-04-05 05:19:40,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:19:40,988 INFO L225 Difference]: With dead ends: 119 [2022-04-05 05:19:40,988 INFO L226 Difference]: Without dead ends: 92 [2022-04-05 05:19:40,989 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 394 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=311, Invalid=1329, Unknown=0, NotChecked=0, Total=1640 [2022-04-05 05:19:40,989 INFO L913 BasicCegarLoop]: 24 mSDtfsCounter, 139 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-05 05:19:40,990 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 66 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-05 05:19:40,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-04-05 05:19:40,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 71. [2022-04-05 05:19:40,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 55 states have (on average 1.0727272727272728) internal successors, (59), 56 states have internal predecessors, (59), 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 05:19:40,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 74 transitions. [2022-04-05 05:19:40,996 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 74 transitions. Word has length 58 [2022-04-05 05:19:40,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:19:40,996 INFO L478 AbstractCegarLoop]: Abstraction has 71 states and 74 transitions. [2022-04-05 05:19:40,997 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.45) internal successors, (69), 18 states have internal predecessors, (69), 11 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 05:19:40,997 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 74 transitions. [2022-04-05 05:19:40,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-04-05 05:19:40,998 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:19:40,998 INFO L499 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:19:41,019 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 05:19:41,202 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:19:41,202 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:19:41,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:19:41,202 INFO L85 PathProgramCache]: Analyzing trace with hash -2012634328, now seen corresponding path program 5 times [2022-04-05 05:19:41,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:19:41,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168226892] [2022-04-05 05:19:41,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:19:41,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:19:41,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:41,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:19:41,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:41,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-04-05 05:19:41,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:41,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-05 05:19:41,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:41,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-04-05 05:19:41,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:41,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-04-05 05:19:41,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:41,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-04-05 05:19:41,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:41,337 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 48 proven. 42 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-04-05 05:19:41,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:19:41,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168226892] [2022-04-05 05:19:41,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168226892] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:19:41,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567343109] [2022-04-05 05:19:41,338 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-05 05:19:41,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:19:41,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:19:41,338 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 05:19:41,339 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 05:19:41,384 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-04-05 05:19:41,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:19:41,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 14 conjunts are in the unsatisfiable core [2022-04-05 05:19:41,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:19:41,595 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 60 proven. 30 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-04-05 05:19:41,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:19:41,726 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 60 proven. 30 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-04-05 05:19:41,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [567343109] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:19:41,727 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:19:41,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 23 [2022-04-05 05:19:41,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165122746] [2022-04-05 05:19:41,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:19:41,728 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-04-05 05:19:41,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:19:41,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-04-05 05:19:41,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=389, Unknown=0, NotChecked=0, Total=506 [2022-04-05 05:19:41,728 INFO L87 Difference]: Start difference. First operand 71 states and 74 transitions. Second operand has 23 states, 23 states have (on average 2.8260869565217392) internal successors, (65), 22 states have internal predecessors, (65), 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 05:19:41,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:19:41,959 INFO L93 Difference]: Finished difference Result 128 states and 149 transitions. [2022-04-05 05:19:41,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-04-05 05:19:41,960 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.8260869565217392) internal successors, (65), 22 states have internal predecessors, (65), 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 68 [2022-04-05 05:19:41,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:19:41,961 INFO L225 Difference]: With dead ends: 128 [2022-04-05 05:19:41,961 INFO L226 Difference]: Without dead ends: 97 [2022-04-05 05:19:41,961 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=284, Invalid=906, Unknown=0, NotChecked=0, Total=1190 [2022-04-05 05:19:41,962 INFO L913 BasicCegarLoop]: 24 mSDtfsCounter, 124 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 05:19:41,962 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 51 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 05:19:41,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-04-05 05:19:41,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 73. [2022-04-05 05:19:41,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 57 states have (on average 1.0701754385964912) internal successors, (61), 58 states have internal predecessors, (61), 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 05:19:41,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 76 transitions. [2022-04-05 05:19:41,967 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 76 transitions. Word has length 68 [2022-04-05 05:19:41,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:19:41,967 INFO L478 AbstractCegarLoop]: Abstraction has 73 states and 76 transitions. [2022-04-05 05:19:41,967 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.8260869565217392) internal successors, (65), 22 states have internal predecessors, (65), 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 05:19:41,967 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 76 transitions. [2022-04-05 05:19:41,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-04-05 05:19:41,968 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:19:41,968 INFO L499 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:19:41,988 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 05:19:42,179 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:19:42,180 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:19:42,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:19:42,180 INFO L85 PathProgramCache]: Analyzing trace with hash 272693387, now seen corresponding path program 6 times [2022-04-05 05:19:42,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:19:42,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430347491] [2022-04-05 05:19:42,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:19:42,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:19:42,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:42,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:19:42,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:42,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-04-05 05:19:42,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:42,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-04-05 05:19:42,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:42,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-04-05 05:19:42,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:42,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-04-05 05:19:42,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:42,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-04-05 05:19:42,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:42,275 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 40 proven. 62 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-04-05 05:19:42,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:19:42,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430347491] [2022-04-05 05:19:42,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430347491] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:19:42,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258380359] [2022-04-05 05:19:42,275 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-05 05:19:42,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:19:42,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:19:42,276 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 05:19:42,277 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 05:19:42,333 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-04-05 05:19:42,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:19:42,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 15 conjunts are in the unsatisfiable core [2022-04-05 05:19:42,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:19:42,440 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 52 proven. 50 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-04-05 05:19:42,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:19:42,552 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 52 proven. 50 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-04-05 05:19:42,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258380359] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:19:42,553 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:19:42,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 16 [2022-04-05 05:19:42,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92376280] [2022-04-05 05:19:42,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:19:42,553 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-05 05:19:42,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:19:42,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-05 05:19:42,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-04-05 05:19:42,554 INFO L87 Difference]: Start difference. First operand 73 states and 76 transitions. Second operand has 16 states, 16 states have (on average 4.125) internal successors, (66), 13 states have internal predecessors, (66), 8 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-04-05 05:19:42,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:19:42,757 INFO L93 Difference]: Finished difference Result 92 states and 97 transitions. [2022-04-05 05:19:42,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-04-05 05:19:42,758 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.125) internal successors, (66), 13 states have internal predecessors, (66), 8 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 70 [2022-04-05 05:19:42,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:19:42,759 INFO L225 Difference]: With dead ends: 92 [2022-04-05 05:19:42,759 INFO L226 Difference]: Without dead ends: 90 [2022-04-05 05:19:42,759 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 153 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=175, Invalid=581, Unknown=0, NotChecked=0, Total=756 [2022-04-05 05:19:42,760 INFO L913 BasicCegarLoop]: 27 mSDtfsCounter, 68 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 05:19:42,760 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 59 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 05:19:42,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-04-05 05:19:42,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 85. [2022-04-05 05:19:42,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 66 states have (on average 1.0606060606060606) internal successors, (70), 67 states have internal predecessors, (70), 10 states have call successors, (10), 9 states have call predecessors, (10), 8 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2022-04-05 05:19:42,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2022-04-05 05:19:42,765 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 70 [2022-04-05 05:19:42,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:19:42,765 INFO L478 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2022-04-05 05:19:42,765 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.125) internal successors, (66), 13 states have internal predecessors, (66), 8 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-04-05 05:19:42,765 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2022-04-05 05:19:42,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-04-05 05:19:42,767 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:19:42,767 INFO L499 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:19:42,784 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 05:19:42,979 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:19:42,979 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:19:42,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:19:42,980 INFO L85 PathProgramCache]: Analyzing trace with hash 723143603, now seen corresponding path program 7 times [2022-04-05 05:19:42,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:19:42,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971060074] [2022-04-05 05:19:42,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:19:42,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:19:42,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:43,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:19:43,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:43,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-04-05 05:19:43,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:43,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-04-05 05:19:43,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:43,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-04-05 05:19:43,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:43,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-04-05 05:19:43,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:43,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-04-05 05:19:43,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:43,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-04-05 05:19:43,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:43,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-04-05 05:19:43,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:43,116 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 94 proven. 60 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-04-05 05:19:43,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:19:43,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971060074] [2022-04-05 05:19:43,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971060074] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:19:43,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385220371] [2022-04-05 05:19:43,116 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-05 05:19:43,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:19:43,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:19:43,117 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 05:19:43,118 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 05:19:43,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:43,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 16 conjunts are in the unsatisfiable core [2022-04-05 05:19:43,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:19:43,461 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 132 proven. 42 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-04-05 05:19:43,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:19:43,579 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 110 proven. 42 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-04-05 05:19:43,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385220371] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:19:43,579 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:19:43,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 16] total 27 [2022-04-05 05:19:43,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586687523] [2022-04-05 05:19:43,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:19:43,580 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-04-05 05:19:43,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:19:43,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-04-05 05:19:43,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=544, Unknown=0, NotChecked=0, Total=702 [2022-04-05 05:19:43,581 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand has 27 states, 27 states have (on average 3.0) internal successors, (81), 26 states have internal predecessors, (81), 16 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (17), 16 states have call predecessors, (17), 16 states have call successors, (17) [2022-04-05 05:19:43,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:19:43,953 INFO L93 Difference]: Finished difference Result 156 states and 181 transitions. [2022-04-05 05:19:43,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-04-05 05:19:43,954 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.0) internal successors, (81), 26 states have internal predecessors, (81), 16 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (17), 16 states have call predecessors, (17), 16 states have call successors, (17) Word has length 86 [2022-04-05 05:19:43,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:19:43,954 INFO L225 Difference]: With dead ends: 156 [2022-04-05 05:19:43,954 INFO L226 Difference]: Without dead ends: 115 [2022-04-05 05:19:43,955 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=377, Invalid=1263, Unknown=0, NotChecked=0, Total=1640 [2022-04-05 05:19:43,956 INFO L913 BasicCegarLoop]: 26 mSDtfsCounter, 134 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-05 05:19:43,957 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 103 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-05 05:19:43,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-04-05 05:19:43,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 87. [2022-04-05 05:19:43,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 68 states have (on average 1.0588235294117647) internal successors, (72), 69 states have internal predecessors, (72), 10 states have call successors, (10), 9 states have call predecessors, (10), 8 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2022-04-05 05:19:43,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2022-04-05 05:19:43,966 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 86 [2022-04-05 05:19:43,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:19:43,966 INFO L478 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2022-04-05 05:19:43,967 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.0) internal successors, (81), 26 states have internal predecessors, (81), 16 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (17), 16 states have call predecessors, (17), 16 states have call successors, (17) [2022-04-05 05:19:43,967 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2022-04-05 05:19:43,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-04-05 05:19:43,967 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:19:43,968 INFO L499 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:19:44,001 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 05:19:44,175 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:19:44,176 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:19:44,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:19:44,176 INFO L85 PathProgramCache]: Analyzing trace with hash -823513514, now seen corresponding path program 8 times [2022-04-05 05:19:44,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:19:44,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641232004] [2022-04-05 05:19:44,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:19:44,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:19:44,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:44,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:19:44,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:44,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-05 05:19:44,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:44,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-04-05 05:19:44,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:44,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-04-05 05:19:44,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:44,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-04-05 05:19:44,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:44,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-04-05 05:19:44,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:44,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-04-05 05:19:44,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:44,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-04-05 05:19:44,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:44,349 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 94 proven. 74 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-04-05 05:19:44,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:19:44,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641232004] [2022-04-05 05:19:44,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641232004] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:19:44,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520801790] [2022-04-05 05:19:44,350 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 05:19:44,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:19:44,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:19:44,351 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 05:19:44,352 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 05:19:44,394 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 05:19:44,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:19:44,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 18 conjunts are in the unsatisfiable core [2022-04-05 05:19:44,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:19:44,616 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 70 proven. 98 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-04-05 05:19:44,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:19:44,751 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 70 proven. 98 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-04-05 05:19:44,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [520801790] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:19:44,751 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:19:44,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 12, 12] total 29 [2022-04-05 05:19:44,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617442652] [2022-04-05 05:19:44,752 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:19:44,752 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-04-05 05:19:44,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:19:44,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-04-05 05:19:44,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=680, Unknown=0, NotChecked=0, Total=812 [2022-04-05 05:19:44,753 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand has 29 states, 29 states have (on average 3.413793103448276) internal successors, (99), 27 states have internal predecessors, (99), 17 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 05:19:45,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:19:45,452 INFO L93 Difference]: Finished difference Result 169 states and 198 transitions. [2022-04-05 05:19:45,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-04-05 05:19:45,452 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.413793103448276) internal successors, (99), 27 states have internal predecessors, (99), 17 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 88 [2022-04-05 05:19:45,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:19:45,453 INFO L225 Difference]: With dead ends: 169 [2022-04-05 05:19:45,453 INFO L226 Difference]: Without dead ends: 130 [2022-04-05 05:19:45,454 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 191 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1069 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=683, Invalid=3099, Unknown=0, NotChecked=0, Total=3782 [2022-04-05 05:19:45,454 INFO L913 BasicCegarLoop]: 33 mSDtfsCounter, 200 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-05 05:19:45,455 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [201 Valid, 95 Invalid, 935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 778 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-05 05:19:45,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-04-05 05:19:45,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 97. [2022-04-05 05:19:45,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 76 states have (on average 1.0526315789473684) internal successors, (80), 77 states have internal predecessors, (80), 11 states have call successors, (11), 10 states have call predecessors, (11), 9 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2022-04-05 05:19:45,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 101 transitions. [2022-04-05 05:19:45,460 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 101 transitions. Word has length 88 [2022-04-05 05:19:45,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:19:45,460 INFO L478 AbstractCegarLoop]: Abstraction has 97 states and 101 transitions. [2022-04-05 05:19:45,460 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.413793103448276) internal successors, (99), 27 states have internal predecessors, (99), 17 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 05:19:45,460 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 101 transitions. [2022-04-05 05:19:45,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-04-05 05:19:45,461 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:19:45,461 INFO L499 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:19:45,479 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 05:19:45,670 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,SelfDestructingSolverStorable10 [2022-04-05 05:19:45,671 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:19:45,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:19:45,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1909818931, now seen corresponding path program 9 times [2022-04-05 05:19:45,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:19:45,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782201726] [2022-04-05 05:19:45,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:19:45,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:19:45,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:45,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:19:45,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:45,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-04-05 05:19:45,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:45,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-04-05 05:19:45,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:45,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-04-05 05:19:45,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:45,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-04-05 05:19:45,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:45,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-04-05 05:19:45,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:45,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-04-05 05:19:45,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:45,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-04-05 05:19:45,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:45,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-04-05 05:19:45,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:45,847 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 123 proven. 93 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-04-05 05:19:45,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:19:45,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782201726] [2022-04-05 05:19:45,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782201726] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:19:45,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125341901] [2022-04-05 05:19:45,847 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-05 05:19:45,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:19:45,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:19:45,848 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 05:19:45,849 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 05:19:45,894 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-04-05 05:19:45,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:19:45,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 20 conjunts are in the unsatisfiable core [2022-04-05 05:19:45,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:19:46,246 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 144 proven. 72 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-04-05 05:19:46,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:19:46,379 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 144 proven. 72 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-04-05 05:19:46,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125341901] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:19:46,379 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:19:46,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 32 [2022-04-05 05:19:46,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844095027] [2022-04-05 05:19:46,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:19:46,380 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-04-05 05:19:46,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:19:46,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-04-05 05:19:46,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=767, Unknown=0, NotChecked=0, Total=992 [2022-04-05 05:19:46,380 INFO L87 Difference]: Start difference. First operand 97 states and 101 transitions. Second operand has 32 states, 32 states have (on average 2.78125) internal successors, (89), 31 states have internal predecessors, (89), 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 05:19:46,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:19:46,772 INFO L93 Difference]: Finished difference Result 178 states and 209 transitions. [2022-04-05 05:19:46,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-04-05 05:19:46,773 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.78125) internal successors, (89), 31 states have internal predecessors, (89), 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 98 [2022-04-05 05:19:46,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:19:46,774 INFO L225 Difference]: With dead ends: 178 [2022-04-05 05:19:46,774 INFO L226 Difference]: Without dead ends: 135 [2022-04-05 05:19:46,775 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 603 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=569, Invalid=1881, Unknown=0, NotChecked=0, Total=2450 [2022-04-05 05:19:46,775 INFO L913 BasicCegarLoop]: 30 mSDtfsCounter, 173 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-05 05:19:46,775 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 62 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-05 05:19:46,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2022-04-05 05:19:46,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 99. [2022-04-05 05:19:46,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 78 states have (on average 1.0512820512820513) internal successors, (82), 79 states have internal predecessors, (82), 11 states have call successors, (11), 10 states have call predecessors, (11), 9 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2022-04-05 05:19:46,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 103 transitions. [2022-04-05 05:19:46,780 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 103 transitions. Word has length 98 [2022-04-05 05:19:46,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:19:46,780 INFO L478 AbstractCegarLoop]: Abstraction has 99 states and 103 transitions. [2022-04-05 05:19:46,780 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.78125) internal successors, (89), 31 states have internal predecessors, (89), 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 05:19:46,780 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 103 transitions. [2022-04-05 05:19:46,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-04-05 05:19:46,781 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:19:46,781 INFO L499 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:19:46,800 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 05:19:46,998 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:19:46,998 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:19:46,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:19:46,999 INFO L85 PathProgramCache]: Analyzing trace with hash 2091155440, now seen corresponding path program 10 times [2022-04-05 05:19:46,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:19:46,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292533228] [2022-04-05 05:19:46,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:19:46,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:19:47,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:47,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:19:47,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:47,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-05 05:19:47,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:47,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-04-05 05:19:47,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:47,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-04-05 05:19:47,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:47,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-04-05 05:19:47,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:47,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-04-05 05:19:47,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:47,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-04-05 05:19:47,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:47,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-04-05 05:19:47,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:47,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-04-05 05:19:47,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:47,187 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 88 proven. 146 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-04-05 05:19:47,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:19:47,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292533228] [2022-04-05 05:19:47,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292533228] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:19:47,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50050938] [2022-04-05 05:19:47,187 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-05 05:19:47,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:19:47,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:19:47,188 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 05:19:47,189 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 05:19:47,241 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-05 05:19:47,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:19:47,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 21 conjunts are in the unsatisfiable core [2022-04-05 05:19:47,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:19:47,390 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 106 proven. 128 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-04-05 05:19:47,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:19:47,550 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 106 proven. 128 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-04-05 05:19:47,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50050938] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:19:47,551 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:19:47,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 19 [2022-04-05 05:19:47,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568652926] [2022-04-05 05:19:47,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:19:47,551 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-04-05 05:19:47,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:19:47,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-04-05 05:19:47,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2022-04-05 05:19:47,552 INFO L87 Difference]: Start difference. First operand 99 states and 103 transitions. Second operand has 19 states, 19 states have (on average 4.2631578947368425) internal successors, (81), 16 states have internal predecessors, (81), 11 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-04-05 05:19:47,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:19:47,828 INFO L93 Difference]: Finished difference Result 118 states and 124 transitions. [2022-04-05 05:19:47,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-04-05 05:19:47,829 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.2631578947368425) internal successors, (81), 16 states have internal predecessors, (81), 11 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 100 [2022-04-05 05:19:47,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:19:47,830 INFO L225 Difference]: With dead ends: 118 [2022-04-05 05:19:47,830 INFO L226 Difference]: Without dead ends: 116 [2022-04-05 05:19:47,830 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 222 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=274, Invalid=848, Unknown=0, NotChecked=0, Total=1122 [2022-04-05 05:19:47,831 INFO L913 BasicCegarLoop]: 30 mSDtfsCounter, 80 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-05 05:19:47,831 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 62 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-05 05:19:47,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-04-05 05:19:47,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 111. [2022-04-05 05:19:47,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 87 states have (on average 1.0459770114942528) internal successors, (91), 88 states have internal predecessors, (91), 13 states have call successors, (13), 11 states have call predecessors, (13), 10 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2022-04-05 05:19:47,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 116 transitions. [2022-04-05 05:19:47,838 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 116 transitions. Word has length 100 [2022-04-05 05:19:47,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:19:47,839 INFO L478 AbstractCegarLoop]: Abstraction has 111 states and 116 transitions. [2022-04-05 05:19:47,839 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.2631578947368425) internal successors, (81), 16 states have internal predecessors, (81), 11 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-04-05 05:19:47,839 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 116 transitions. [2022-04-05 05:19:47,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-04-05 05:19:47,840 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:19:47,840 INFO L499 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:19:47,882 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 05:19:48,055 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,SelfDestructingSolverStorable12 [2022-04-05 05:19:48,055 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:19:48,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:19:48,056 INFO L85 PathProgramCache]: Analyzing trace with hash -661362408, now seen corresponding path program 11 times [2022-04-05 05:19:48,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:19:48,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109411830] [2022-04-05 05:19:48,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:19:48,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:19:48,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:48,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:19:48,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:48,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-05 05:19:48,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:48,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-04-05 05:19:48,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:48,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-04-05 05:19:48,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:48,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-04-05 05:19:48,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:48,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-04-05 05:19:48,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:48,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-04-05 05:19:48,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:48,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-04-05 05:19:48,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:48,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-04-05 05:19:48,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:48,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-04-05 05:19:48,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:48,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-04-05 05:19:48,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:48,270 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 193 proven. 117 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-04-05 05:19:48,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:19:48,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109411830] [2022-04-05 05:19:48,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109411830] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:19:48,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976793870] [2022-04-05 05:19:48,270 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-05 05:19:48,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:19:48,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:19:48,271 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 05:19:48,272 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 05:19:48,330 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2022-04-05 05:19:48,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:19:48,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 23 conjunts are in the unsatisfiable core [2022-04-05 05:19:48,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:19:48,760 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 220 proven. 90 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-04-05 05:19:48,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:19:48,988 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 220 proven. 90 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-04-05 05:19:48,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976793870] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:19:48,989 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:19:48,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 23] total 39 [2022-04-05 05:19:48,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032803839] [2022-04-05 05:19:48,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:19:48,989 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-04-05 05:19:48,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:19:48,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-04-05 05:19:48,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=342, Invalid=1140, Unknown=0, NotChecked=0, Total=1482 [2022-04-05 05:19:48,990 INFO L87 Difference]: Start difference. First operand 111 states and 116 transitions. Second operand has 39 states, 39 states have (on average 2.8461538461538463) internal successors, (111), 38 states have internal predecessors, (111), 24 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-04-05 05:19:49,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:19:49,678 INFO L93 Difference]: Finished difference Result 253 states and 301 transitions. [2022-04-05 05:19:49,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-04-05 05:19:49,679 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.8461538461538463) internal successors, (111), 38 states have internal predecessors, (111), 24 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Word has length 116 [2022-04-05 05:19:49,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:19:49,683 INFO L225 Difference]: With dead ends: 253 [2022-04-05 05:19:49,683 INFO L226 Difference]: Without dead ends: 159 [2022-04-05 05:19:49,684 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1355 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1163, Invalid=3807, Unknown=0, NotChecked=0, Total=4970 [2022-04-05 05:19:49,685 INFO L913 BasicCegarLoop]: 32 mSDtfsCounter, 267 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-05 05:19:49,685 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [268 Valid, 64 Invalid, 882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-05 05:19:49,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2022-04-05 05:19:49,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 115. [2022-04-05 05:19:49,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 91 states have (on average 1.043956043956044) internal successors, (95), 92 states have internal predecessors, (95), 13 states have call successors, (13), 11 states have call predecessors, (13), 10 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2022-04-05 05:19:49,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 120 transitions. [2022-04-05 05:19:49,692 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 120 transitions. Word has length 116 [2022-04-05 05:19:49,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:19:49,692 INFO L478 AbstractCegarLoop]: Abstraction has 115 states and 120 transitions. [2022-04-05 05:19:49,692 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.8461538461538463) internal successors, (111), 38 states have internal predecessors, (111), 24 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-04-05 05:19:49,693 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 120 transitions. [2022-04-05 05:19:49,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-04-05 05:19:49,693 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:19:49,693 INFO L499 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:19:49,710 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 05:19:49,898 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,SelfDestructingSolverStorable13 [2022-04-05 05:19:49,898 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:19:49,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:19:49,899 INFO L85 PathProgramCache]: Analyzing trace with hash 893969182, now seen corresponding path program 12 times [2022-04-05 05:19:49,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:19:49,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407253090] [2022-04-05 05:19:49,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:19:49,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:19:49,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:50,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:19:50,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:50,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-04-05 05:19:50,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:50,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-04-05 05:19:50,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:50,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-04-05 05:19:50,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:50,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-04-05 05:19:50,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:50,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-04-05 05:19:50,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:50,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-04-05 05:19:50,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:50,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-04-05 05:19:50,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:50,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-04-05 05:19:50,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:50,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-04-05 05:19:50,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:50,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-04-05 05:19:50,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:50,059 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 130 proven. 222 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-04-05 05:19:50,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:19:50,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407253090] [2022-04-05 05:19:50,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407253090] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:19:50,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183828744] [2022-04-05 05:19:50,060 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-05 05:19:50,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:19:50,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:19:50,076 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 05:19:50,123 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 05:19:50,177 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2022-04-05 05:19:50,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:19:50,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 25 conjunts are in the unsatisfiable core [2022-04-05 05:19:50,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:19:50,340 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 152 proven. 200 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-04-05 05:19:50,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:19:50,509 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 152 proven. 200 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-04-05 05:19:50,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183828744] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:19:50,510 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:19:50,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 21 [2022-04-05 05:19:50,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76231150] [2022-04-05 05:19:50,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:19:50,511 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-04-05 05:19:50,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:19:50,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-04-05 05:19:50,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2022-04-05 05:19:50,512 INFO L87 Difference]: Start difference. First operand 115 states and 120 transitions. Second operand has 21 states, 21 states have (on average 4.333333333333333) internal successors, (91), 18 states have internal predecessors, (91), 13 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-04-05 05:19:50,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:19:50,858 INFO L93 Difference]: Finished difference Result 134 states and 141 transitions. [2022-04-05 05:19:50,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-04-05 05:19:50,859 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.333333333333333) internal successors, (91), 18 states have internal predecessors, (91), 13 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 120 [2022-04-05 05:19:50,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:19:50,860 INFO L225 Difference]: With dead ends: 134 [2022-04-05 05:19:50,860 INFO L226 Difference]: Without dead ends: 132 [2022-04-05 05:19:50,860 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 268 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=355, Invalid=1051, Unknown=0, NotChecked=0, Total=1406 [2022-04-05 05:19:50,860 INFO L913 BasicCegarLoop]: 32 mSDtfsCounter, 90 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-05 05:19:50,861 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 74 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-05 05:19:50,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-04-05 05:19:50,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 127. [2022-04-05 05:19:50,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 100 states have (on average 1.04) internal successors, (104), 101 states have internal predecessors, (104), 15 states have call successors, (15), 12 states have call predecessors, (15), 11 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2022-04-05 05:19:50,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 133 transitions. [2022-04-05 05:19:50,866 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 133 transitions. Word has length 120 [2022-04-05 05:19:50,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:19:50,866 INFO L478 AbstractCegarLoop]: Abstraction has 127 states and 133 transitions. [2022-04-05 05:19:50,866 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.333333333333333) internal successors, (91), 18 states have internal predecessors, (91), 13 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-04-05 05:19:50,866 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 133 transitions. [2022-04-05 05:19:50,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-04-05 05:19:50,867 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:19:50,867 INFO L499 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:19:50,899 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 05:19:51,083 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,SelfDestructingSolverStorable14 [2022-04-05 05:19:51,084 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:19:51,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:19:51,084 INFO L85 PathProgramCache]: Analyzing trace with hash -124211130, now seen corresponding path program 13 times [2022-04-05 05:19:51,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:19:51,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888452333] [2022-04-05 05:19:51,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:19:51,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:19:51,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:51,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:19:51,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:51,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-04-05 05:19:51,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:51,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-04-05 05:19:51,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:51,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-04-05 05:19:51,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:51,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-04-05 05:19:51,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:51,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-04-05 05:19:51,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:51,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-04-05 05:19:51,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:51,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-04-05 05:19:51,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:51,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-04-05 05:19:51,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:51,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-04-05 05:19:51,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:51,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-04-05 05:19:51,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:51,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-04-05 05:19:51,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:51,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-04-05 05:19:51,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:51,357 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 279 proven. 165 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-04-05 05:19:51,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:19:51,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888452333] [2022-04-05 05:19:51,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888452333] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:19:51,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871234407] [2022-04-05 05:19:51,358 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-05 05:19:51,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:19:51,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:19:51,359 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 05:19:51,360 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 05:19:51,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:51,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 26 conjunts are in the unsatisfiable core [2022-04-05 05:19:51,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:19:51,868 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 352 proven. 132 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2022-04-05 05:19:51,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:19:52,099 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 310 proven. 132 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2022-04-05 05:19:52,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871234407] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:19:52,100 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:19:52,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 26, 26] total 42 [2022-04-05 05:19:52,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111835095] [2022-04-05 05:19:52,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:19:52,100 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-04-05 05:19:52,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:19:52,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-04-05 05:19:52,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=383, Invalid=1339, Unknown=0, NotChecked=0, Total=1722 [2022-04-05 05:19:52,102 INFO L87 Difference]: Start difference. First operand 127 states and 133 transitions. Second operand has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 41 states have internal predecessors, (121), 26 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 26 states have call predecessors, (27), 26 states have call successors, (27) [2022-04-05 05:19:52,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:19:52,730 INFO L93 Difference]: Finished difference Result 238 states and 280 transitions. [2022-04-05 05:19:52,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-04-05 05:19:52,730 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 41 states have internal predecessors, (121), 26 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 26 states have call predecessors, (27), 26 states have call successors, (27) Word has length 136 [2022-04-05 05:19:52,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:19:52,732 INFO L225 Difference]: With dead ends: 238 [2022-04-05 05:19:52,732 INFO L226 Difference]: Without dead ends: 177 [2022-04-05 05:19:52,733 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1111 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=967, Invalid=3323, Unknown=0, NotChecked=0, Total=4290 [2022-04-05 05:19:52,734 INFO L913 BasicCegarLoop]: 36 mSDtfsCounter, 229 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-05 05:19:52,734 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [230 Valid, 68 Invalid, 705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-05 05:19:52,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-04-05 05:19:52,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 129. [2022-04-05 05:19:52,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 102 states have (on average 1.0392156862745099) internal successors, (106), 103 states have internal predecessors, (106), 15 states have call successors, (15), 12 states have call predecessors, (15), 11 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2022-04-05 05:19:52,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 135 transitions. [2022-04-05 05:19:52,742 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 135 transitions. Word has length 136 [2022-04-05 05:19:52,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:19:52,742 INFO L478 AbstractCegarLoop]: Abstraction has 129 states and 135 transitions. [2022-04-05 05:19:52,743 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 41 states have internal predecessors, (121), 26 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 26 states have call predecessors, (27), 26 states have call successors, (27) [2022-04-05 05:19:52,743 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 135 transitions. [2022-04-05 05:19:52,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-04-05 05:19:52,743 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:19:52,744 INFO L499 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:19:52,795 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-04-05 05:19:52,958 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,SelfDestructingSolverStorable15 [2022-04-05 05:19:52,958 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:19:52,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:19:52,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1132461015, now seen corresponding path program 14 times [2022-04-05 05:19:52,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:19:52,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084374480] [2022-04-05 05:19:52,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:19:52,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:19:52,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:53,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:19:53,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:53,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-04-05 05:19:53,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:53,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-04-05 05:19:53,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:53,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-04-05 05:19:53,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:53,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-04-05 05:19:53,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:53,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-04-05 05:19:53,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:53,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-04-05 05:19:53,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:53,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-04-05 05:19:53,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:53,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-04-05 05:19:53,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:53,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-04-05 05:19:53,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:53,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-04-05 05:19:53,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:53,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-04-05 05:19:53,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:53,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-04-05 05:19:53,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:53,333 INFO L134 CoverageAnalysis]: Checked inductivity of 732 backedges. 279 proven. 189 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-04-05 05:19:53,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:19:53,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084374480] [2022-04-05 05:19:53,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084374480] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:19:53,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909281116] [2022-04-05 05:19:53,333 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 05:19:53,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:19:53,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:19:53,348 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 05:19:53,363 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 05:19:53,421 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 05:19:53,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:19:53,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 28 conjunts are in the unsatisfiable core [2022-04-05 05:19:53,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:19:53,803 INFO L134 CoverageAnalysis]: Checked inductivity of 732 backedges. 180 proven. 288 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-04-05 05:19:53,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:19:53,993 INFO L134 CoverageAnalysis]: Checked inductivity of 732 backedges. 180 proven. 288 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-04-05 05:19:53,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909281116] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:19:53,993 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:19:53,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 17, 17] total 44 [2022-04-05 05:19:53,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949448182] [2022-04-05 05:19:53,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:19:53,994 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-04-05 05:19:53,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:19:53,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-04-05 05:19:53,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=307, Invalid=1585, Unknown=0, NotChecked=0, Total=1892 [2022-04-05 05:19:53,995 INFO L87 Difference]: Start difference. First operand 129 states and 135 transitions. Second operand has 44 states, 44 states have (on average 3.3863636363636362) internal successors, (149), 42 states have internal predecessors, (149), 27 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 05:19:55,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:19:55,339 INFO L93 Difference]: Finished difference Result 251 states and 297 transitions. [2022-04-05 05:19:55,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-04-05 05:19:55,339 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 3.3863636363636362) internal successors, (149), 42 states have internal predecessors, (149), 27 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 138 [2022-04-05 05:19:55,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:19:55,340 INFO L225 Difference]: With dead ends: 251 [2022-04-05 05:19:55,341 INFO L226 Difference]: Without dead ends: 192 [2022-04-05 05:19:55,343 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 301 SyntacticMatches, 1 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2914 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1623, Invalid=7689, Unknown=0, NotChecked=0, Total=9312 [2022-04-05 05:19:55,343 INFO L913 BasicCegarLoop]: 48 mSDtfsCounter, 349 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 1550 mSolverCounterSat, 293 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 1843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 293 IncrementalHoareTripleChecker+Valid, 1550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-05 05:19:55,343 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [350 Valid, 120 Invalid, 1843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [293 Valid, 1550 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-05 05:19:55,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-04-05 05:19:55,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 139. [2022-04-05 05:19:55,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 110 states have (on average 1.0363636363636364) internal successors, (114), 111 states have internal predecessors, (114), 16 states have call successors, (16), 13 states have call predecessors, (16), 12 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2022-04-05 05:19:55,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 145 transitions. [2022-04-05 05:19:55,349 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 145 transitions. Word has length 138 [2022-04-05 05:19:55,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:19:55,349 INFO L478 AbstractCegarLoop]: Abstraction has 139 states and 145 transitions. [2022-04-05 05:19:55,349 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 3.3863636363636362) internal successors, (149), 42 states have internal predecessors, (149), 27 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 05:19:55,349 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 145 transitions. [2022-04-05 05:19:55,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-04-05 05:19:55,350 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:19:55,350 INFO L499 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:19:55,366 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-04-05 05:19:55,554 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:19:55,555 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:19:55,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:19:55,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1762808352, now seen corresponding path program 15 times [2022-04-05 05:19:55,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:19:55,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144673509] [2022-04-05 05:19:55,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:19:55,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:19:55,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:55,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:19:55,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:55,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-04-05 05:19:55,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:55,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-04-05 05:19:55,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:55,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-04-05 05:19:55,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:55,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-04-05 05:19:55,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:55,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-04-05 05:19:55,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:55,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-04-05 05:19:55,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:55,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-04-05 05:19:55,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:55,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-04-05 05:19:55,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:55,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-04-05 05:19:55,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:55,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-04-05 05:19:55,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:55,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-04-05 05:19:55,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:55,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-04-05 05:19:55,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:55,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-04-05 05:19:55,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:55,856 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 328 proven. 218 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-04-05 05:19:55,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:19:55,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144673509] [2022-04-05 05:19:55,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144673509] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:19:55,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984274728] [2022-04-05 05:19:55,857 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-05 05:19:55,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:19:55,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:19:55,858 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 05:19:55,858 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 05:19:55,922 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2022-04-05 05:19:55,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:19:55,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 30 conjunts are in the unsatisfiable core [2022-04-05 05:19:55,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:19:56,372 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 208 proven. 338 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-04-05 05:19:56,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:19:56,617 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 208 proven. 338 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-04-05 05:19:56,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984274728] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:19:56,618 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:19:56,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 18, 18] total 47 [2022-04-05 05:19:56,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992969161] [2022-04-05 05:19:56,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:19:56,618 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-04-05 05:19:56,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:19:56,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-04-05 05:19:56,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=1811, Unknown=0, NotChecked=0, Total=2162 [2022-04-05 05:19:56,619 INFO L87 Difference]: Start difference. First operand 139 states and 145 transitions. Second operand has 47 states, 47 states have (on average 3.382978723404255) internal successors, (159), 45 states have internal predecessors, (159), 29 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 05:19:57,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:19:57,933 INFO L93 Difference]: Finished difference Result 269 states and 318 transitions. [2022-04-05 05:19:57,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-04-05 05:19:57,933 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 3.382978723404255) internal successors, (159), 45 states have internal predecessors, (159), 29 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 148 [2022-04-05 05:19:57,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:19:57,934 INFO L225 Difference]: With dead ends: 269 [2022-04-05 05:19:57,934 INFO L226 Difference]: Without dead ends: 206 [2022-04-05 05:19:57,937 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 323 SyntacticMatches, 1 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3391 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1859, Invalid=8853, Unknown=0, NotChecked=0, Total=10712 [2022-04-05 05:19:57,937 INFO L913 BasicCegarLoop]: 51 mSDtfsCounter, 454 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 1398 mSolverCounterSat, 392 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 1790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 392 IncrementalHoareTripleChecker+Valid, 1398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-05 05:19:57,937 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [455 Valid, 123 Invalid, 1790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [392 Valid, 1398 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-05 05:19:57,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2022-04-05 05:19:57,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 149. [2022-04-05 05:19:57,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 118 states have (on average 1.0338983050847457) internal successors, (122), 119 states have internal predecessors, (122), 17 states have call successors, (17), 14 states have call predecessors, (17), 13 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2022-04-05 05:19:57,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 155 transitions. [2022-04-05 05:19:57,944 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 155 transitions. Word has length 148 [2022-04-05 05:19:57,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:19:57,944 INFO L478 AbstractCegarLoop]: Abstraction has 149 states and 155 transitions. [2022-04-05 05:19:57,944 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 3.382978723404255) internal successors, (159), 45 states have internal predecessors, (159), 29 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 05:19:57,944 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 155 transitions. [2022-04-05 05:19:57,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-04-05 05:19:57,945 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:19:57,945 INFO L499 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:19:57,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-04-05 05:19:58,159 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,SelfDestructingSolverStorable17 [2022-04-05 05:19:58,159 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:19:58,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:19:58,160 INFO L85 PathProgramCache]: Analyzing trace with hash -263642921, now seen corresponding path program 16 times [2022-04-05 05:19:58,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:19:58,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167656044] [2022-04-05 05:19:58,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:19:58,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:19:58,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:58,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:19:58,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:58,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-04-05 05:19:58,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:58,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-04-05 05:19:58,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:58,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-04-05 05:19:58,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:58,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-04-05 05:19:58,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:58,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-04-05 05:19:58,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:58,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-04-05 05:19:58,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:58,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-04-05 05:19:58,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:58,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-04-05 05:19:58,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:58,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-04-05 05:19:58,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:58,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-04-05 05:19:58,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:58,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-04-05 05:19:58,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:58,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-04-05 05:19:58,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:58,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-04-05 05:19:58,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:58,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-04-05 05:19:58,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:19:58,523 INFO L134 CoverageAnalysis]: Checked inductivity of 994 backedges. 381 proven. 249 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-04-05 05:19:58,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:19:58,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167656044] [2022-04-05 05:19:58,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167656044] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:19:58,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501222363] [2022-04-05 05:19:58,523 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-05 05:19:58,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:19:58,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:19:58,524 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 05:19:58,525 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 05:19:58,587 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-05 05:19:58,588 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:19:58,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 32 conjunts are in the unsatisfiable core [2022-04-05 05:19:58,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:19:59,071 INFO L134 CoverageAnalysis]: Checked inductivity of 994 backedges. 238 proven. 392 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-04-05 05:19:59,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:19:59,326 INFO L134 CoverageAnalysis]: Checked inductivity of 994 backedges. 238 proven. 392 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-04-05 05:19:59,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501222363] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:19:59,326 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:19:59,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 19, 19] total 50 [2022-04-05 05:19:59,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350302214] [2022-04-05 05:19:59,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:19:59,327 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-04-05 05:19:59,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:19:59,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-04-05 05:19:59,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=398, Invalid=2052, Unknown=0, NotChecked=0, Total=2450 [2022-04-05 05:19:59,329 INFO L87 Difference]: Start difference. First operand 149 states and 155 transitions. Second operand has 50 states, 50 states have (on average 3.38) internal successors, (169), 48 states have internal predecessors, (169), 31 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 05:20:00,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:20:00,865 INFO L93 Difference]: Finished difference Result 287 states and 339 transitions. [2022-04-05 05:20:00,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-04-05 05:20:00,866 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 3.38) internal successors, (169), 48 states have internal predecessors, (169), 31 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 158 [2022-04-05 05:20:00,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:20:00,867 INFO L225 Difference]: With dead ends: 287 [2022-04-05 05:20:00,867 INFO L226 Difference]: Without dead ends: 220 [2022-04-05 05:20:00,869 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 345 SyntacticMatches, 1 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3904 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2111, Invalid=10099, Unknown=0, NotChecked=0, Total=12210 [2022-04-05 05:20:00,869 INFO L913 BasicCegarLoop]: 54 mSDtfsCounter, 451 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1784 mSolverCounterSat, 330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 2114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 1784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-05 05:20:00,869 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [452 Valid, 121 Invalid, 2114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 1784 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-05 05:20:00,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2022-04-05 05:20:00,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 159. [2022-04-05 05:20:00,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 126 states have (on average 1.0317460317460319) internal successors, (130), 127 states have internal predecessors, (130), 18 states have call successors, (18), 15 states have call predecessors, (18), 14 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2022-04-05 05:20:00,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 165 transitions. [2022-04-05 05:20:00,879 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 165 transitions. Word has length 158 [2022-04-05 05:20:00,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:20:00,879 INFO L478 AbstractCegarLoop]: Abstraction has 159 states and 165 transitions. [2022-04-05 05:20:00,880 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 3.38) internal successors, (169), 48 states have internal predecessors, (169), 31 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 05:20:00,880 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 165 transitions. [2022-04-05 05:20:00,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-04-05 05:20:00,881 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:20:00,881 INFO L499 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:20:00,904 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 05:20:01,089 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:20:01,089 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:20:01,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:20:01,090 INFO L85 PathProgramCache]: Analyzing trace with hash -243938034, now seen corresponding path program 17 times [2022-04-05 05:20:01,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:20:01,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440173107] [2022-04-05 05:20:01,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:20:01,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:20:01,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:01,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:20:01,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:01,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-04-05 05:20:01,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:01,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-04-05 05:20:01,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:01,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-04-05 05:20:01,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:01,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-04-05 05:20:01,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:01,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-04-05 05:20:01,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:01,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-04-05 05:20:01,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:01,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-04-05 05:20:01,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:01,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-04-05 05:20:01,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:01,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-04-05 05:20:01,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:01,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-04-05 05:20:01,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:01,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-04-05 05:20:01,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:01,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-04-05 05:20:01,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:01,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-04-05 05:20:01,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:01,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-04-05 05:20:01,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:01,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-04-05 05:20:01,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:01,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1140 backedges. 438 proven. 282 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2022-04-05 05:20:01,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:20:01,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440173107] [2022-04-05 05:20:01,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440173107] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:20:01,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040695667] [2022-04-05 05:20:01,485 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-05 05:20:01,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:20:01,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:20:01,486 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 05:20:01,487 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 05:20:01,560 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2022-04-05 05:20:01,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:20:01,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 34 conjunts are in the unsatisfiable core [2022-04-05 05:20:01,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:20:02,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1140 backedges. 480 proven. 240 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2022-04-05 05:20:02,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:20:02,474 INFO L134 CoverageAnalysis]: Checked inductivity of 1140 backedges. 480 proven. 240 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2022-04-05 05:20:02,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040695667] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:20:02,475 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:20:02,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34, 34] total 53 [2022-04-05 05:20:02,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453915664] [2022-04-05 05:20:02,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:20:02,476 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-04-05 05:20:02,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:20:02,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-04-05 05:20:02,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=617, Invalid=2139, Unknown=0, NotChecked=0, Total=2756 [2022-04-05 05:20:02,477 INFO L87 Difference]: Start difference. First operand 159 states and 165 transitions. Second operand has 53 states, 53 states have (on average 2.7358490566037736) internal successors, (145), 52 states have internal predecessors, (145), 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 05:20:03,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:20:03,272 INFO L93 Difference]: Finished difference Result 296 states and 350 transitions. [2022-04-05 05:20:03,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-04-05 05:20:03,273 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.7358490566037736) internal successors, (145), 52 states have internal predecessors, (145), 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 168 [2022-04-05 05:20:03,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:20:03,274 INFO L225 Difference]: With dead ends: 296 [2022-04-05 05:20:03,274 INFO L226 Difference]: Without dead ends: 225 [2022-04-05 05:20:03,275 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1870 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1619, Invalid=5521, Unknown=0, NotChecked=0, Total=7140 [2022-04-05 05:20:03,275 INFO L913 BasicCegarLoop]: 44 mSDtfsCounter, 294 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 891 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 1100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-05 05:20:03,275 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 91 Invalid, 1100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 891 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-05 05:20:03,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2022-04-05 05:20:03,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 161. [2022-04-05 05:20:03,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 128 states have (on average 1.03125) internal successors, (132), 129 states have internal predecessors, (132), 18 states have call successors, (18), 15 states have call predecessors, (18), 14 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2022-04-05 05:20:03,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 167 transitions. [2022-04-05 05:20:03,282 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 167 transitions. Word has length 168 [2022-04-05 05:20:03,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:20:03,283 INFO L478 AbstractCegarLoop]: Abstraction has 161 states and 167 transitions. [2022-04-05 05:20:03,283 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.7358490566037736) internal successors, (145), 52 states have internal predecessors, (145), 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 05:20:03,283 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 167 transitions. [2022-04-05 05:20:03,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-04-05 05:20:03,283 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:20:03,284 INFO L499 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:20:03,302 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-04-05 05:20:03,500 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:20:03,500 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:20:03,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:20:03,501 INFO L85 PathProgramCache]: Analyzing trace with hash -509815567, now seen corresponding path program 18 times [2022-04-05 05:20:03,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:20:03,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643372496] [2022-04-05 05:20:03,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:20:03,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:20:03,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:03,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:20:03,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:03,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-04-05 05:20:03,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:03,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-04-05 05:20:03,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:03,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-04-05 05:20:03,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:03,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-04-05 05:20:03,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:03,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-04-05 05:20:03,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:03,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-04-05 05:20:03,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:03,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-04-05 05:20:03,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:03,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-04-05 05:20:03,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:03,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-04-05 05:20:03,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:03,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-04-05 05:20:03,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:03,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-04-05 05:20:03,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:03,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-04-05 05:20:03,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:03,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-04-05 05:20:03,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:03,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-04-05 05:20:03,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:03,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-04-05 05:20:03,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:03,734 INFO L134 CoverageAnalysis]: Checked inductivity of 1172 backedges. 270 proven. 482 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2022-04-05 05:20:03,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:20:03,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643372496] [2022-04-05 05:20:03,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643372496] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:20:03,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251152195] [2022-04-05 05:20:03,734 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-05 05:20:03,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:20:03,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:20:03,735 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 05:20:03,742 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 05:20:03,813 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2022-04-05 05:20:03,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:20:03,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 35 conjunts are in the unsatisfiable core [2022-04-05 05:20:03,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:20:04,034 INFO L134 CoverageAnalysis]: Checked inductivity of 1172 backedges. 302 proven. 450 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2022-04-05 05:20:04,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:20:04,303 INFO L134 CoverageAnalysis]: Checked inductivity of 1172 backedges. 302 proven. 450 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2022-04-05 05:20:04,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251152195] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:20:04,303 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:20:04,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 21] total 26 [2022-04-05 05:20:04,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532977070] [2022-04-05 05:20:04,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:20:04,304 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-04-05 05:20:04,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:20:04,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-04-05 05:20:04,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=444, Unknown=0, NotChecked=0, Total=650 [2022-04-05 05:20:04,304 INFO L87 Difference]: Start difference. First operand 161 states and 167 transitions. Second operand has 26 states, 26 states have (on average 4.461538461538462) internal successors, (116), 23 states have internal predecessors, (116), 18 states have call successors, (22), 4 states have call predecessors, (22), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-04-05 05:20:04,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:20:04,706 INFO L93 Difference]: Finished difference Result 180 states and 188 transitions. [2022-04-05 05:20:04,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-04-05 05:20:04,707 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.461538461538462) internal successors, (116), 23 states have internal predecessors, (116), 18 states have call successors, (22), 4 states have call predecessors, (22), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Word has length 170 [2022-04-05 05:20:04,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:20:04,707 INFO L225 Difference]: With dead ends: 180 [2022-04-05 05:20:04,708 INFO L226 Difference]: Without dead ends: 178 [2022-04-05 05:20:04,708 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 383 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 532 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=610, Invalid=1646, Unknown=0, NotChecked=0, Total=2256 [2022-04-05 05:20:04,708 INFO L913 BasicCegarLoop]: 37 mSDtfsCounter, 113 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-05 05:20:04,708 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 64 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-05 05:20:04,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2022-04-05 05:20:04,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 173. [2022-04-05 05:20:04,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 137 states have (on average 1.0291970802919708) internal successors, (141), 138 states have internal predecessors, (141), 20 states have call successors, (20), 16 states have call predecessors, (20), 15 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2022-04-05 05:20:04,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 180 transitions. [2022-04-05 05:20:04,715 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 180 transitions. Word has length 170 [2022-04-05 05:20:04,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:20:04,716 INFO L478 AbstractCegarLoop]: Abstraction has 173 states and 180 transitions. [2022-04-05 05:20:04,716 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.461538461538462) internal successors, (116), 23 states have internal predecessors, (116), 18 states have call successors, (22), 4 states have call predecessors, (22), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-04-05 05:20:04,716 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 180 transitions. [2022-04-05 05:20:04,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-04-05 05:20:04,717 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:20:04,717 INFO L499 BasicCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 17, 17, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:20:04,733 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 05:20:04,923 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:20:04,923 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:20:04,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:20:04,924 INFO L85 PathProgramCache]: Analyzing trace with hash 82615321, now seen corresponding path program 19 times [2022-04-05 05:20:04,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:20:04,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968525742] [2022-04-05 05:20:04,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:20:04,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:20:04,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:05,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:20:05,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:05,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-04-05 05:20:05,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:05,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-04-05 05:20:05,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:05,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-04-05 05:20:05,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:05,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-04-05 05:20:05,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:05,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-04-05 05:20:05,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:05,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-04-05 05:20:05,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:05,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-04-05 05:20:05,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:05,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-04-05 05:20:05,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:05,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-04-05 05:20:05,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:05,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-04-05 05:20:05,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:05,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-04-05 05:20:05,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:05,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-04-05 05:20:05,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:05,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-04-05 05:20:05,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:05,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-04-05 05:20:05,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:05,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-04-05 05:20:05,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:05,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-04-05 05:20:05,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:05,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-04-05 05:20:05,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:05,334 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 564 proven. 320 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2022-04-05 05:20:05,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:20:05,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968525742] [2022-04-05 05:20:05,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968525742] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:20:05,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600664392] [2022-04-05 05:20:05,334 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-05 05:20:05,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:20:05,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:20:05,335 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 05:20:05,341 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 05:20:05,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:05,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 36 conjunts are in the unsatisfiable core [2022-04-05 05:20:05,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:20:06,168 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 672 proven. 272 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2022-04-05 05:20:06,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:20:06,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 610 proven. 272 refuted. 0 times theorem prover too weak. 546 trivial. 0 not checked. [2022-04-05 05:20:06,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600664392] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:20:06,444 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:20:06,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 36, 36] total 57 [2022-04-05 05:20:06,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247674150] [2022-04-05 05:20:06,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:20:06,445 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-04-05 05:20:06,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:20:06,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-04-05 05:20:06,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=708, Invalid=2484, Unknown=0, NotChecked=0, Total=3192 [2022-04-05 05:20:06,446 INFO L87 Difference]: Start difference. First operand 173 states and 180 transitions. Second operand has 57 states, 57 states have (on average 2.824561403508772) internal successors, (161), 56 states have internal predecessors, (161), 36 states have call successors, (39), 3 states have call predecessors, (39), 2 states have return successors, (37), 36 states have call predecessors, (37), 36 states have call successors, (37) [2022-04-05 05:20:07,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:20:07,354 INFO L93 Difference]: Finished difference Result 324 states and 382 transitions. [2022-04-05 05:20:07,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-04-05 05:20:07,356 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 2.824561403508772) internal successors, (161), 56 states have internal predecessors, (161), 36 states have call successors, (39), 3 states have call predecessors, (39), 2 states have return successors, (37), 36 states have call predecessors, (37), 36 states have call successors, (37) Word has length 186 [2022-04-05 05:20:07,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:20:07,357 INFO L225 Difference]: With dead ends: 324 [2022-04-05 05:20:07,357 INFO L226 Difference]: Without dead ends: 243 [2022-04-05 05:20:07,359 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 406 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2176 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1832, Invalid=6358, Unknown=0, NotChecked=0, Total=8190 [2022-04-05 05:20:07,360 INFO L913 BasicCegarLoop]: 46 mSDtfsCounter, 298 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1062 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 1258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 1062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-05 05:20:07,360 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [299 Valid, 108 Invalid, 1258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 1062 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-05 05:20:07,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-04-05 05:20:07,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 175. [2022-04-05 05:20:07,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 139 states have (on average 1.0287769784172662) internal successors, (143), 140 states have internal predecessors, (143), 20 states have call successors, (20), 16 states have call predecessors, (20), 15 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2022-04-05 05:20:07,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 182 transitions. [2022-04-05 05:20:07,374 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 182 transitions. Word has length 186 [2022-04-05 05:20:07,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:20:07,374 INFO L478 AbstractCegarLoop]: Abstraction has 175 states and 182 transitions. [2022-04-05 05:20:07,375 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 2.824561403508772) internal successors, (161), 56 states have internal predecessors, (161), 36 states have call successors, (39), 3 states have call predecessors, (39), 2 states have return successors, (37), 36 states have call predecessors, (37), 36 states have call successors, (37) [2022-04-05 05:20:07,375 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 182 transitions. [2022-04-05 05:20:07,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-04-05 05:20:07,376 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:20:07,376 INFO L499 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:20:07,402 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-04-05 05:20:07,583 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:20:07,583 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:20:07,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:20:07,584 INFO L85 PathProgramCache]: Analyzing trace with hash -535523012, now seen corresponding path program 20 times [2022-04-05 05:20:07,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:20:07,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700620510] [2022-04-05 05:20:07,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:20:07,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:20:07,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:07,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:20:07,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:08,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-04-05 05:20:08,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:08,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-04-05 05:20:08,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:08,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-04-05 05:20:08,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:08,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-04-05 05:20:08,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:08,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-04-05 05:20:08,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:08,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-04-05 05:20:08,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:08,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-04-05 05:20:08,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:08,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-04-05 05:20:08,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:08,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-04-05 05:20:08,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:08,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-04-05 05:20:08,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:08,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-04-05 05:20:08,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:08,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-04-05 05:20:08,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:08,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-04-05 05:20:08,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:08,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-04-05 05:20:08,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:08,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-04-05 05:20:08,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:08,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-04-05 05:20:08,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:08,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-04-05 05:20:08,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:08,031 INFO L134 CoverageAnalysis]: Checked inductivity of 1462 backedges. 564 proven. 354 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2022-04-05 05:20:08,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:20:08,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700620510] [2022-04-05 05:20:08,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700620510] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:20:08,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734221333] [2022-04-05 05:20:08,031 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 05:20:08,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:20:08,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:20:08,032 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 05:20:08,036 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 05:20:08,101 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 05:20:08,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:20:08,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 38 conjunts are in the unsatisfiable core [2022-04-05 05:20:08,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:20:08,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1462 backedges. 340 proven. 578 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2022-04-05 05:20:08,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:20:08,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1462 backedges. 340 proven. 578 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2022-04-05 05:20:08,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734221333] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:20:08,936 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:20:08,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 22, 22] total 59 [2022-04-05 05:20:08,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627736154] [2022-04-05 05:20:08,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:20:08,937 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-04-05 05:20:08,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:20:08,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-04-05 05:20:08,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=557, Invalid=2865, Unknown=0, NotChecked=0, Total=3422 [2022-04-05 05:20:08,938 INFO L87 Difference]: Start difference. First operand 175 states and 182 transitions. Second operand has 59 states, 59 states have (on average 3.3728813559322033) internal successors, (199), 57 states have internal predecessors, (199), 37 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 05:20:10,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:20:10,597 INFO L93 Difference]: Finished difference Result 337 states and 399 transitions. [2022-04-05 05:20:10,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-04-05 05:20:10,597 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 3.3728813559322033) internal successors, (199), 57 states have internal predecessors, (199), 37 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 188 [2022-04-05 05:20:10,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:20:10,598 INFO L225 Difference]: With dead ends: 337 [2022-04-05 05:20:10,598 INFO L226 Difference]: Without dead ends: 258 [2022-04-05 05:20:10,600 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 542 GetRequests, 411 SyntacticMatches, 1 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5659 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2963, Invalid=14329, Unknown=0, NotChecked=0, Total=17292 [2022-04-05 05:20:10,600 INFO L913 BasicCegarLoop]: 63 mSDtfsCounter, 514 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2231 mSolverCounterSat, 403 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 2634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 403 IncrementalHoareTripleChecker+Valid, 2231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-04-05 05:20:10,600 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [515 Valid, 145 Invalid, 2634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [403 Valid, 2231 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-05 05:20:10,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2022-04-05 05:20:10,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 185. [2022-04-05 05:20:10,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 147 states have (on average 1.0272108843537415) internal successors, (151), 148 states have internal predecessors, (151), 21 states have call successors, (21), 17 states have call predecessors, (21), 16 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2022-04-05 05:20:10,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 192 transitions. [2022-04-05 05:20:10,609 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 192 transitions. Word has length 188 [2022-04-05 05:20:10,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:20:10,609 INFO L478 AbstractCegarLoop]: Abstraction has 185 states and 192 transitions. [2022-04-05 05:20:10,609 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 3.3728813559322033) internal successors, (199), 57 states have internal predecessors, (199), 37 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 05:20:10,609 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 192 transitions. [2022-04-05 05:20:10,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-04-05 05:20:10,610 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:20:10,610 INFO L499 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:20:10,632 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 05:20:10,823 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,SelfDestructingSolverStorable22 [2022-04-05 05:20:10,823 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:20:10,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:20:10,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1382971085, now seen corresponding path program 21 times [2022-04-05 05:20:10,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:20:10,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525205894] [2022-04-05 05:20:10,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:20:10,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:20:10,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:11,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:20:11,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:11,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-04-05 05:20:11,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:11,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-04-05 05:20:11,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:11,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-04-05 05:20:11,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:11,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-04-05 05:20:11,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:11,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-04-05 05:20:11,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:11,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-04-05 05:20:11,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:11,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-04-05 05:20:11,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:11,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-04-05 05:20:11,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:11,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-04-05 05:20:11,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:11,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-04-05 05:20:11,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:11,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-04-05 05:20:11,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:11,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-04-05 05:20:11,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:11,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-04-05 05:20:11,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:11,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-04-05 05:20:11,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:11,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-04-05 05:20:11,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:11,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-04-05 05:20:11,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:11,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-04-05 05:20:11,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:11,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-04-05 05:20:11,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:11,282 INFO L134 CoverageAnalysis]: Checked inductivity of 1638 backedges. 633 proven. 393 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2022-04-05 05:20:11,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:20:11,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525205894] [2022-04-05 05:20:11,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525205894] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:20:11,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686495997] [2022-04-05 05:20:11,282 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-05 05:20:11,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:20:11,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:20:11,283 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 05:20:11,284 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 05:20:11,369 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2022-04-05 05:20:11,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:20:11,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 40 conjunts are in the unsatisfiable core [2022-04-05 05:20:11,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:20:11,993 INFO L134 CoverageAnalysis]: Checked inductivity of 1638 backedges. 378 proven. 648 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2022-04-05 05:20:11,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:20:12,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1638 backedges. 378 proven. 648 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2022-04-05 05:20:12,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686495997] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:20:12,328 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:20:12,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 23, 23] total 62 [2022-04-05 05:20:12,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224892014] [2022-04-05 05:20:12,328 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:20:12,329 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-04-05 05:20:12,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:20:12,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-04-05 05:20:12,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=616, Invalid=3166, Unknown=0, NotChecked=0, Total=3782 [2022-04-05 05:20:12,330 INFO L87 Difference]: Start difference. First operand 185 states and 192 transitions. Second operand has 62 states, 62 states have (on average 3.370967741935484) internal successors, (209), 60 states have internal predecessors, (209), 39 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 05:20:14,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:20:14,176 INFO L93 Difference]: Finished difference Result 355 states and 420 transitions. [2022-04-05 05:20:14,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-04-05 05:20:14,176 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 3.370967741935484) internal successors, (209), 60 states have internal predecessors, (209), 39 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 198 [2022-04-05 05:20:14,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:20:14,177 INFO L225 Difference]: With dead ends: 355 [2022-04-05 05:20:14,177 INFO L226 Difference]: Without dead ends: 272 [2022-04-05 05:20:14,179 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 571 GetRequests, 433 SyntacticMatches, 1 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6316 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=3279, Invalid=15903, Unknown=0, NotChecked=0, Total=19182 [2022-04-05 05:20:14,179 INFO L913 BasicCegarLoop]: 66 mSDtfsCounter, 563 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 2341 mSolverCounterSat, 505 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 564 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 2846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 505 IncrementalHoareTripleChecker+Valid, 2341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-05 05:20:14,179 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [564 Valid, 158 Invalid, 2846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [505 Valid, 2341 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-05 05:20:14,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2022-04-05 05:20:14,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 195. [2022-04-05 05:20:14,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 155 states have (on average 1.0258064516129033) internal successors, (159), 156 states have internal predecessors, (159), 22 states have call successors, (22), 18 states have call predecessors, (22), 17 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2022-04-05 05:20:14,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 202 transitions. [2022-04-05 05:20:14,190 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 202 transitions. Word has length 198 [2022-04-05 05:20:14,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:20:14,190 INFO L478 AbstractCegarLoop]: Abstraction has 195 states and 202 transitions. [2022-04-05 05:20:14,190 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 3.370967741935484) internal successors, (209), 60 states have internal predecessors, (209), 39 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 05:20:14,190 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 202 transitions. [2022-04-05 05:20:14,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-04-05 05:20:14,191 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:20:14,191 INFO L499 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:20:14,210 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-04-05 05:20:14,399 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,SelfDestructingSolverStorable23 [2022-04-05 05:20:14,399 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:20:14,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:20:14,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1594525078, now seen corresponding path program 22 times [2022-04-05 05:20:14,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:20:14,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721615872] [2022-04-05 05:20:14,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:20:14,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:20:14,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:14,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:20:14,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:14,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-04-05 05:20:14,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:14,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-04-05 05:20:14,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:14,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-04-05 05:20:14,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:14,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-04-05 05:20:14,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:14,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-04-05 05:20:14,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:14,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-04-05 05:20:14,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:14,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-04-05 05:20:14,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:14,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-04-05 05:20:14,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:14,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-04-05 05:20:14,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:14,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-04-05 05:20:14,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:14,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-04-05 05:20:14,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:14,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-04-05 05:20:14,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:14,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-04-05 05:20:14,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:14,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-04-05 05:20:14,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:14,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-04-05 05:20:14,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:14,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-04-05 05:20:14,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:14,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-04-05 05:20:14,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:14,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-04-05 05:20:14,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:14,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-04-05 05:20:14,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:14,886 INFO L134 CoverageAnalysis]: Checked inductivity of 1824 backedges. 706 proven. 434 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2022-04-05 05:20:14,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:20:14,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721615872] [2022-04-05 05:20:14,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721615872] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:20:14,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91286269] [2022-04-05 05:20:14,886 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-05 05:20:14,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:20:14,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:20:14,887 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 05:20:14,888 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 05:20:14,961 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-05 05:20:14,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:20:14,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 42 conjunts are in the unsatisfiable core [2022-04-05 05:20:14,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:20:15,607 INFO L134 CoverageAnalysis]: Checked inductivity of 1824 backedges. 418 proven. 722 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2022-04-05 05:20:15,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:20:15,870 INFO L134 CoverageAnalysis]: Checked inductivity of 1824 backedges. 418 proven. 722 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2022-04-05 05:20:15,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91286269] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:20:15,870 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:20:15,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 24, 24] total 65 [2022-04-05 05:20:15,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842171780] [2022-04-05 05:20:15,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:20:15,871 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-04-05 05:20:15,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:20:15,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-04-05 05:20:15,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=678, Invalid=3482, Unknown=0, NotChecked=0, Total=4160 [2022-04-05 05:20:15,872 INFO L87 Difference]: Start difference. First operand 195 states and 202 transitions. Second operand has 65 states, 65 states have (on average 3.3692307692307693) internal successors, (219), 63 states have internal predecessors, (219), 41 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 05:20:17,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:20:17,829 INFO L93 Difference]: Finished difference Result 373 states and 441 transitions. [2022-04-05 05:20:17,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-04-05 05:20:17,830 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 3.3692307692307693) internal successors, (219), 63 states have internal predecessors, (219), 41 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 208 [2022-04-05 05:20:17,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:20:17,831 INFO L225 Difference]: With dead ends: 373 [2022-04-05 05:20:17,831 INFO L226 Difference]: Without dead ends: 286 [2022-04-05 05:20:17,832 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 600 GetRequests, 455 SyntacticMatches, 1 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7009 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=3611, Invalid=17559, Unknown=0, NotChecked=0, Total=21170 [2022-04-05 05:20:17,832 INFO L913 BasicCegarLoop]: 69 mSDtfsCounter, 662 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2348 mSolverCounterSat, 582 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 663 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 2930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 582 IncrementalHoareTripleChecker+Valid, 2348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-05 05:20:17,832 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [663 Valid, 151 Invalid, 2930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [582 Valid, 2348 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-05 05:20:17,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2022-04-05 05:20:17,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 205. [2022-04-05 05:20:17,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 163 states have (on average 1.0245398773006136) internal successors, (167), 164 states have internal predecessors, (167), 23 states have call successors, (23), 19 states have call predecessors, (23), 18 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2022-04-05 05:20:17,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 212 transitions. [2022-04-05 05:20:17,842 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 212 transitions. Word has length 208 [2022-04-05 05:20:17,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:20:17,842 INFO L478 AbstractCegarLoop]: Abstraction has 205 states and 212 transitions. [2022-04-05 05:20:17,842 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 3.3692307692307693) internal successors, (219), 63 states have internal predecessors, (219), 41 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 05:20:17,842 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 212 transitions. [2022-04-05 05:20:17,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2022-04-05 05:20:17,844 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:20:17,844 INFO L499 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:20:17,860 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 05:20:18,059 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:20:18,060 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:20:18,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:20:18,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1419258655, now seen corresponding path program 23 times [2022-04-05 05:20:18,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:20:18,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124495208] [2022-04-05 05:20:18,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:20:18,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:20:18,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:18,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:20:18,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:18,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-04-05 05:20:18,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:18,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-04-05 05:20:18,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:18,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-04-05 05:20:18,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:18,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-04-05 05:20:18,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:18,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-04-05 05:20:18,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:18,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-04-05 05:20:18,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:18,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-04-05 05:20:18,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:18,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-04-05 05:20:18,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:18,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-04-05 05:20:18,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:18,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-04-05 05:20:18,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:18,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-04-05 05:20:18,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:18,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-04-05 05:20:18,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:18,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-04-05 05:20:18,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:18,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-04-05 05:20:18,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:18,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-04-05 05:20:18,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:18,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-04-05 05:20:18,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:18,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-04-05 05:20:18,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:18,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-04-05 05:20:18,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:18,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-04-05 05:20:18,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:18,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-04-05 05:20:18,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:18,617 INFO L134 CoverageAnalysis]: Checked inductivity of 2020 backedges. 783 proven. 477 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-04-05 05:20:18,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:20:18,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124495208] [2022-04-05 05:20:18,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124495208] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:20:18,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344730132] [2022-04-05 05:20:18,617 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-05 05:20:18,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:20:18,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:20:18,618 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 05:20:18,619 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 05:20:18,705 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2022-04-05 05:20:18,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:20:18,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 44 conjunts are in the unsatisfiable core [2022-04-05 05:20:18,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:20:19,649 INFO L134 CoverageAnalysis]: Checked inductivity of 2020 backedges. 840 proven. 420 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-04-05 05:20:19,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:20:19,924 INFO L134 CoverageAnalysis]: Checked inductivity of 2020 backedges. 840 proven. 420 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-04-05 05:20:19,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344730132] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:20:19,924 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:20:19,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 44, 44] total 68 [2022-04-05 05:20:19,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339593926] [2022-04-05 05:20:19,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:20:19,925 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-04-05 05:20:19,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:20:19,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-04-05 05:20:19,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1017, Invalid=3539, Unknown=0, NotChecked=0, Total=4556 [2022-04-05 05:20:19,926 INFO L87 Difference]: Start difference. First operand 205 states and 212 transitions. Second operand has 68 states, 68 states have (on average 2.7205882352941178) internal successors, (185), 67 states have internal predecessors, (185), 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 05:20:21,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:20:21,018 INFO L93 Difference]: Finished difference Result 382 states and 452 transitions. [2022-04-05 05:20:21,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-04-05 05:20:21,019 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 2.7205882352941178) internal successors, (185), 67 states have internal predecessors, (185), 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 218 [2022-04-05 05:20:21,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:20:21,020 INFO L225 Difference]: With dead ends: 382 [2022-04-05 05:20:21,020 INFO L226 Difference]: Without dead ends: 291 [2022-04-05 05:20:21,022 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 584 GetRequests, 476 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3195 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2699, Invalid=9291, Unknown=0, NotChecked=0, Total=11990 [2022-04-05 05:20:21,022 INFO L913 BasicCegarLoop]: 54 mSDtfsCounter, 383 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1278 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 1505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 1278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-05 05:20:21,022 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [384 Valid, 121 Invalid, 1505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 1278 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-05 05:20:21,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2022-04-05 05:20:21,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 207. [2022-04-05 05:20:21,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 165 states have (on average 1.0242424242424242) internal successors, (169), 166 states have internal predecessors, (169), 23 states have call successors, (23), 19 states have call predecessors, (23), 18 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2022-04-05 05:20:21,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 214 transitions. [2022-04-05 05:20:21,044 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 214 transitions. Word has length 218 [2022-04-05 05:20:21,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:20:21,044 INFO L478 AbstractCegarLoop]: Abstraction has 207 states and 214 transitions. [2022-04-05 05:20:21,044 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 2.7205882352941178) internal successors, (185), 67 states have internal predecessors, (185), 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 05:20:21,044 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 214 transitions. [2022-04-05 05:20:21,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2022-04-05 05:20:21,045 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:20:21,045 INFO L499 BasicCegarLoop]: trace histogram [22, 21, 21, 21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:20:21,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-04-05 05:20:21,259 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:20:21,259 INFO L403 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:20:21,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:20:21,260 INFO L85 PathProgramCache]: Analyzing trace with hash -705004028, now seen corresponding path program 24 times [2022-04-05 05:20:21,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:20:21,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460689754] [2022-04-05 05:20:21,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:20:21,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:20:21,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:21,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:20:21,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:21,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-04-05 05:20:21,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:21,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-04-05 05:20:21,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:21,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-04-05 05:20:21,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:21,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-04-05 05:20:21,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:21,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-04-05 05:20:21,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:21,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-04-05 05:20:21,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:21,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-04-05 05:20:21,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:21,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-04-05 05:20:21,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:21,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-04-05 05:20:21,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:21,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-04-05 05:20:21,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:21,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-04-05 05:20:21,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:21,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-04-05 05:20:21,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:21,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-04-05 05:20:21,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:21,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-04-05 05:20:21,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:21,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-04-05 05:20:21,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:21,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-04-05 05:20:21,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:21,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-04-05 05:20:21,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:21,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-04-05 05:20:21,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:21,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-04-05 05:20:21,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:21,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-04-05 05:20:21,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:21,565 INFO L134 CoverageAnalysis]: Checked inductivity of 2062 backedges. 460 proven. 842 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-04-05 05:20:21,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:20:21,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460689754] [2022-04-05 05:20:21,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460689754] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:20:21,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403409539] [2022-04-05 05:20:21,565 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-05 05:20:21,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:20:21,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:20:21,566 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 05:20:21,567 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 05:20:21,659 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2022-04-05 05:20:21,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:20:21,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 618 conjuncts, 45 conjunts are in the unsatisfiable core [2022-04-05 05:20:21,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:20:21,956 INFO L134 CoverageAnalysis]: Checked inductivity of 2062 backedges. 502 proven. 800 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-04-05 05:20:21,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:20:22,240 INFO L134 CoverageAnalysis]: Checked inductivity of 2062 backedges. 502 proven. 800 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-04-05 05:20:22,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403409539] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:20:22,241 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:20:22,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26, 26] total 31 [2022-04-05 05:20:22,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176553069] [2022-04-05 05:20:22,241 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:20:22,241 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-04-05 05:20:22,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:20:22,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-04-05 05:20:22,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=316, Invalid=614, Unknown=0, NotChecked=0, Total=930 [2022-04-05 05:20:22,243 INFO L87 Difference]: Start difference. First operand 207 states and 214 transitions. Second operand has 31 states, 31 states have (on average 4.548387096774194) internal successors, (141), 28 states have internal predecessors, (141), 23 states have call successors, (27), 4 states have call predecessors, (27), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-04-05 05:20:22,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:20:22,729 INFO L93 Difference]: Finished difference Result 226 states and 235 transitions. [2022-04-05 05:20:22,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-04-05 05:20:22,730 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.548387096774194) internal successors, (141), 28 states have internal predecessors, (141), 23 states have call successors, (27), 4 states have call predecessors, (27), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Word has length 220 [2022-04-05 05:20:22,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:20:22,731 INFO L225 Difference]: With dead ends: 226 [2022-04-05 05:20:22,731 INFO L226 Difference]: Without dead ends: 224 [2022-04-05 05:20:22,731 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 555 GetRequests, 498 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 747 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=940, Invalid=2366, Unknown=0, NotChecked=0, Total=3306 [2022-04-05 05:20:22,732 INFO L913 BasicCegarLoop]: 42 mSDtfsCounter, 131 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-05 05:20:22,732 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 74 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 639 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-05 05:20:22,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2022-04-05 05:20:22,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 219. [2022-04-05 05:20:22,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 174 states have (on average 1.0229885057471264) internal successors, (178), 175 states have internal predecessors, (178), 25 states have call successors, (25), 20 states have call predecessors, (25), 19 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2022-04-05 05:20:22,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 227 transitions. [2022-04-05 05:20:22,751 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 227 transitions. Word has length 220 [2022-04-05 05:20:22,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:20:22,753 INFO L478 AbstractCegarLoop]: Abstraction has 219 states and 227 transitions. [2022-04-05 05:20:22,753 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.548387096774194) internal successors, (141), 28 states have internal predecessors, (141), 23 states have call successors, (27), 4 states have call predecessors, (27), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-04-05 05:20:22,753 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 227 transitions. [2022-04-05 05:20:22,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-04-05 05:20:22,754 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:20:22,754 INFO L499 BasicCegarLoop]: trace histogram [23, 23, 23, 22, 22, 22, 22, 22, 22, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:20:22,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-04-05 05:20:22,963 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,SelfDestructingSolverStorable26 [2022-04-05 05:20:22,963 INFO L403 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:20:22,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:20:22,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1082933460, now seen corresponding path program 25 times [2022-04-05 05:20:22,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:20:22,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174592622] [2022-04-05 05:20:22,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:20:22,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:20:22,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:23,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:20:23,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:23,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-04-05 05:20:23,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:23,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-04-05 05:20:23,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:23,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-04-05 05:20:23,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:23,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-04-05 05:20:23,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:23,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-04-05 05:20:23,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:23,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-04-05 05:20:23,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:23,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-04-05 05:20:23,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:23,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-04-05 05:20:23,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:23,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-04-05 05:20:23,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:23,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-04-05 05:20:23,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:23,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-04-05 05:20:23,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:23,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-04-05 05:20:23,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:23,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-04-05 05:20:23,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:23,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-04-05 05:20:23,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:23,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-04-05 05:20:23,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:23,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-04-05 05:20:23,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:23,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-04-05 05:20:23,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:23,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-04-05 05:20:23,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:23,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-04-05 05:20:23,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:23,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-04-05 05:20:23,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:23,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-04-05 05:20:23,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:23,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-04-05 05:20:23,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:23,613 INFO L134 CoverageAnalysis]: Checked inductivity of 2398 backedges. 949 proven. 525 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2022-04-05 05:20:23,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:20:23,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174592622] [2022-04-05 05:20:23,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174592622] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:20:23,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195259639] [2022-04-05 05:20:23,614 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-05 05:20:23,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:20:23,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:20:23,615 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 05:20:23,615 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 05:20:23,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:23,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 652 conjuncts, 46 conjunts are in the unsatisfiable core [2022-04-05 05:20:23,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:20:24,649 INFO L134 CoverageAnalysis]: Checked inductivity of 2398 backedges. 1092 proven. 462 refuted. 0 times theorem prover too weak. 844 trivial. 0 not checked. [2022-04-05 05:20:24,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:20:25,002 INFO L134 CoverageAnalysis]: Checked inductivity of 2398 backedges. 1010 proven. 462 refuted. 0 times theorem prover too weak. 926 trivial. 0 not checked. [2022-04-05 05:20:25,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195259639] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:20:25,003 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:20:25,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 46, 46] total 72 [2022-04-05 05:20:25,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902524603] [2022-04-05 05:20:25,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:20:25,004 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-04-05 05:20:25,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:20:25,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-04-05 05:20:25,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1133, Invalid=3979, Unknown=0, NotChecked=0, Total=5112 [2022-04-05 05:20:25,004 INFO L87 Difference]: Start difference. First operand 219 states and 227 transitions. Second operand has 72 states, 72 states have (on average 2.7916666666666665) internal successors, (201), 71 states have internal predecessors, (201), 46 states have call successors, (49), 3 states have call predecessors, (49), 2 states have return successors, (47), 46 states have call predecessors, (47), 46 states have call successors, (47) [2022-04-05 05:20:26,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:20:26,104 INFO L93 Difference]: Finished difference Result 410 states and 484 transitions. [2022-04-05 05:20:26,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-04-05 05:20:26,105 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 2.7916666666666665) internal successors, (201), 71 states have internal predecessors, (201), 46 states have call successors, (49), 3 states have call predecessors, (49), 2 states have return successors, (47), 46 states have call predecessors, (47), 46 states have call successors, (47) Word has length 236 [2022-04-05 05:20:26,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:20:26,118 INFO L225 Difference]: With dead ends: 410 [2022-04-05 05:20:26,119 INFO L226 Difference]: Without dead ends: 309 [2022-04-05 05:20:26,120 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 630 GetRequests, 516 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3591 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2972, Invalid=10368, Unknown=0, NotChecked=0, Total=13340 [2022-04-05 05:20:26,120 INFO L913 BasicCegarLoop]: 56 mSDtfsCounter, 536 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1339 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 1645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-05 05:20:26,120 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [537 Valid, 113 Invalid, 1645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1339 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-05 05:20:26,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2022-04-05 05:20:26,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 221. [2022-04-05 05:20:26,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 176 states have (on average 1.0227272727272727) internal successors, (180), 177 states have internal predecessors, (180), 25 states have call successors, (25), 20 states have call predecessors, (25), 19 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2022-04-05 05:20:26,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 229 transitions. [2022-04-05 05:20:26,131 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 229 transitions. Word has length 236 [2022-04-05 05:20:26,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:20:26,131 INFO L478 AbstractCegarLoop]: Abstraction has 221 states and 229 transitions. [2022-04-05 05:20:26,131 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 2.7916666666666665) internal successors, (201), 71 states have internal predecessors, (201), 46 states have call successors, (49), 3 states have call predecessors, (49), 2 states have return successors, (47), 46 states have call predecessors, (47), 46 states have call successors, (47) [2022-04-05 05:20:26,131 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 229 transitions. [2022-04-05 05:20:26,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2022-04-05 05:20:26,132 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:20:26,132 INFO L499 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:20:26,153 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 05:20:26,335 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,SelfDestructingSolverStorable27 [2022-04-05 05:20:26,335 INFO L403 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:20:26,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:20:26,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1034320497, now seen corresponding path program 26 times [2022-04-05 05:20:26,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:20:26,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974408990] [2022-04-05 05:20:26,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:20:26,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:20:26,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:26,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:20:26,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:26,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-04-05 05:20:26,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:26,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-04-05 05:20:26,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:26,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-04-05 05:20:26,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:26,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-04-05 05:20:26,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:26,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-04-05 05:20:26,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:26,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-04-05 05:20:26,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:26,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-04-05 05:20:26,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:26,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-04-05 05:20:26,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:26,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-04-05 05:20:26,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:26,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-04-05 05:20:26,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:26,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-04-05 05:20:26,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:26,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-04-05 05:20:26,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:26,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-04-05 05:20:26,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:26,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-04-05 05:20:26,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:26,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-04-05 05:20:26,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:26,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-04-05 05:20:26,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:26,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-04-05 05:20:26,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:26,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-04-05 05:20:26,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:26,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-04-05 05:20:26,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:26,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-04-05 05:20:26,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:26,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-04-05 05:20:26,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:26,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-04-05 05:20:26,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:26,959 INFO L134 CoverageAnalysis]: Checked inductivity of 2442 backedges. 949 proven. 569 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2022-04-05 05:20:26,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:20:26,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974408990] [2022-04-05 05:20:26,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974408990] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:20:26,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147803867] [2022-04-05 05:20:26,959 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 05:20:26,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:20:26,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:20:26,963 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 05:20:26,964 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 05:20:27,048 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 05:20:27,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:20:27,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 662 conjuncts, 48 conjunts are in the unsatisfiable core [2022-04-05 05:20:27,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:20:27,839 INFO L134 CoverageAnalysis]: Checked inductivity of 2442 backedges. 550 proven. 968 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2022-04-05 05:20:27,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:20:28,157 INFO L134 CoverageAnalysis]: Checked inductivity of 2442 backedges. 550 proven. 968 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2022-04-05 05:20:28,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [147803867] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:20:28,158 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:20:28,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 27, 27] total 74 [2022-04-05 05:20:28,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514932258] [2022-04-05 05:20:28,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:20:28,158 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2022-04-05 05:20:28,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:20:28,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2022-04-05 05:20:28,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=882, Invalid=4520, Unknown=0, NotChecked=0, Total=5402 [2022-04-05 05:20:28,159 INFO L87 Difference]: Start difference. First operand 221 states and 229 transitions. Second operand has 74 states, 74 states have (on average 3.364864864864865) internal successors, (249), 72 states have internal predecessors, (249), 47 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 05:20:30,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:20:30,515 INFO L93 Difference]: Finished difference Result 423 states and 501 transitions. [2022-04-05 05:20:30,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-04-05 05:20:30,516 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 3.364864864864865) internal successors, (249), 72 states have internal predecessors, (249), 47 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 238 [2022-04-05 05:20:30,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:20:30,517 INFO L225 Difference]: With dead ends: 423 [2022-04-05 05:20:30,517 INFO L226 Difference]: Without dead ends: 324 [2022-04-05 05:20:30,519 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 687 GetRequests, 521 SyntacticMatches, 1 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9304 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=4703, Invalid=23019, Unknown=0, NotChecked=0, Total=27722 [2022-04-05 05:20:30,519 INFO L913 BasicCegarLoop]: 78 mSDtfsCounter, 751 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 3123 mSolverCounterSat, 575 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 752 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 3698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 575 IncrementalHoareTripleChecker+Valid, 3123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-04-05 05:20:30,520 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [752 Valid, 175 Invalid, 3698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [575 Valid, 3123 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-04-05 05:20:30,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2022-04-05 05:20:30,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 231. [2022-04-05 05:20:30,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 184 states have (on average 1.0217391304347827) internal successors, (188), 185 states have internal predecessors, (188), 26 states have call successors, (26), 21 states have call predecessors, (26), 20 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2022-04-05 05:20:30,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 239 transitions. [2022-04-05 05:20:30,530 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 239 transitions. Word has length 238 [2022-04-05 05:20:30,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:20:30,531 INFO L478 AbstractCegarLoop]: Abstraction has 231 states and 239 transitions. [2022-04-05 05:20:30,531 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 3.364864864864865) internal successors, (249), 72 states have internal predecessors, (249), 47 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 05:20:30,531 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 239 transitions. [2022-04-05 05:20:30,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2022-04-05 05:20:30,532 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:20:30,532 INFO L499 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:20:30,564 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-04-05 05:20:30,732 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,SelfDestructingSolverStorable28 [2022-04-05 05:20:30,732 INFO L403 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:20:30,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:20:30,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1502889018, now seen corresponding path program 27 times [2022-04-05 05:20:30,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:20:30,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888624138] [2022-04-05 05:20:30,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:20:30,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:20:30,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:31,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:20:31,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:31,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-04-05 05:20:31,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:31,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-04-05 05:20:31,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:31,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-04-05 05:20:31,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:31,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-04-05 05:20:31,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:31,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-04-05 05:20:31,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:31,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-04-05 05:20:31,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:31,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-04-05 05:20:31,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:31,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-04-05 05:20:31,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:31,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-04-05 05:20:31,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:31,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-04-05 05:20:31,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:31,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-04-05 05:20:31,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:31,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-04-05 05:20:31,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:31,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-04-05 05:20:31,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:31,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-04-05 05:20:31,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:31,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-04-05 05:20:31,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:31,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-04-05 05:20:31,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:31,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-04-05 05:20:31,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:31,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-04-05 05:20:31,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:31,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-04-05 05:20:31,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:31,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-04-05 05:20:31,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:31,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-04-05 05:20:31,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:31,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-04-05 05:20:31,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:31,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-04-05 05:20:31,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:31,417 INFO L134 CoverageAnalysis]: Checked inductivity of 2668 backedges. 1038 proven. 618 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2022-04-05 05:20:31,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:20:31,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888624138] [2022-04-05 05:20:31,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888624138] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:20:31,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247566424] [2022-04-05 05:20:31,419 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-05 05:20:31,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:20:31,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:20:31,420 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 05:20:31,421 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 05:20:31,522 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2022-04-05 05:20:31,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:20:31,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 689 conjuncts, 50 conjunts are in the unsatisfiable core [2022-04-05 05:20:31,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:20:32,393 INFO L134 CoverageAnalysis]: Checked inductivity of 2668 backedges. 598 proven. 1058 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2022-04-05 05:20:32,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:20:32,728 INFO L134 CoverageAnalysis]: Checked inductivity of 2668 backedges. 598 proven. 1058 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2022-04-05 05:20:32,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247566424] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:20:32,729 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:20:32,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 28, 28] total 77 [2022-04-05 05:20:32,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919497464] [2022-04-05 05:20:32,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:20:32,729 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2022-04-05 05:20:32,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:20:32,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2022-04-05 05:20:32,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=956, Invalid=4896, Unknown=0, NotChecked=0, Total=5852 [2022-04-05 05:20:32,730 INFO L87 Difference]: Start difference. First operand 231 states and 239 transitions. Second operand has 77 states, 77 states have (on average 3.3636363636363638) internal successors, (259), 75 states have internal predecessors, (259), 49 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 05:20:35,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:20:35,236 INFO L93 Difference]: Finished difference Result 441 states and 522 transitions. [2022-04-05 05:20:35,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-04-05 05:20:35,236 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 3.3636363636363638) internal successors, (259), 75 states have internal predecessors, (259), 49 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 248 [2022-04-05 05:20:35,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:20:35,237 INFO L225 Difference]: With dead ends: 441 [2022-04-05 05:20:35,237 INFO L226 Difference]: Without dead ends: 338 [2022-04-05 05:20:35,239 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 716 GetRequests, 543 SyntacticMatches, 1 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10141 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=5099, Invalid=25003, Unknown=0, NotChecked=0, Total=30102 [2022-04-05 05:20:35,239 INFO L913 BasicCegarLoop]: 81 mSDtfsCounter, 706 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 3019 mSolverCounterSat, 639 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 707 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 3658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 639 IncrementalHoareTripleChecker+Valid, 3019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-04-05 05:20:35,239 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [707 Valid, 153 Invalid, 3658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [639 Valid, 3019 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-04-05 05:20:35,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2022-04-05 05:20:35,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 241. [2022-04-05 05:20:35,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 192 states have (on average 1.0208333333333333) internal successors, (196), 193 states have internal predecessors, (196), 27 states have call successors, (27), 22 states have call predecessors, (27), 21 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2022-04-05 05:20:35,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 249 transitions. [2022-04-05 05:20:35,251 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 249 transitions. Word has length 248 [2022-04-05 05:20:35,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:20:35,251 INFO L478 AbstractCegarLoop]: Abstraction has 241 states and 249 transitions. [2022-04-05 05:20:35,252 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 3.3636363636363638) internal successors, (259), 75 states have internal predecessors, (259), 49 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 05:20:35,252 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 249 transitions. [2022-04-05 05:20:35,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2022-04-05 05:20:35,254 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:20:35,254 INFO L499 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:20:35,281 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 05:20:35,470 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:20:35,471 INFO L403 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:20:35,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:20:35,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1900930243, now seen corresponding path program 28 times [2022-04-05 05:20:35,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:20:35,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113862036] [2022-04-05 05:20:35,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:20:35,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:20:35,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:36,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:20:36,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:36,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-04-05 05:20:36,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:36,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-04-05 05:20:36,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:36,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-04-05 05:20:36,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:36,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-04-05 05:20:36,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:36,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-04-05 05:20:36,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:36,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-04-05 05:20:36,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:36,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-04-05 05:20:36,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:36,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-04-05 05:20:36,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:36,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-04-05 05:20:36,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:36,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-04-05 05:20:36,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:36,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-04-05 05:20:36,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:36,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-04-05 05:20:36,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:36,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-04-05 05:20:36,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:36,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-04-05 05:20:36,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:36,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-04-05 05:20:36,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:36,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-04-05 05:20:36,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:36,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-04-05 05:20:36,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:36,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-04-05 05:20:36,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:36,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-04-05 05:20:36,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:36,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-04-05 05:20:36,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:36,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-04-05 05:20:36,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:36,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-04-05 05:20:36,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:36,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-04-05 05:20:36,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:36,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-04-05 05:20:36,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:36,236 INFO L134 CoverageAnalysis]: Checked inductivity of 2904 backedges. 1131 proven. 669 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2022-04-05 05:20:36,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:20:36,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113862036] [2022-04-05 05:20:36,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113862036] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:20:36,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991975215] [2022-04-05 05:20:36,236 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-05 05:20:36,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:20:36,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:20:36,252 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 05:20:36,257 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 05:20:36,350 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-05 05:20:36,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:20:36,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 716 conjuncts, 52 conjunts are in the unsatisfiable core [2022-04-05 05:20:36,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:20:37,308 INFO L134 CoverageAnalysis]: Checked inductivity of 2904 backedges. 648 proven. 1152 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2022-04-05 05:20:37,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:20:37,688 INFO L134 CoverageAnalysis]: Checked inductivity of 2904 backedges. 648 proven. 1152 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2022-04-05 05:20:37,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991975215] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:20:37,689 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:20:37,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 29, 29] total 80 [2022-04-05 05:20:37,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123063010] [2022-04-05 05:20:37,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:20:37,689 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2022-04-05 05:20:37,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:20:37,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2022-04-05 05:20:37,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1033, Invalid=5287, Unknown=0, NotChecked=0, Total=6320 [2022-04-05 05:20:37,690 INFO L87 Difference]: Start difference. First operand 241 states and 249 transitions. Second operand has 80 states, 80 states have (on average 3.3625) internal successors, (269), 78 states have internal predecessors, (269), 51 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 05:20:40,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:20:40,090 INFO L93 Difference]: Finished difference Result 459 states and 543 transitions. [2022-04-05 05:20:40,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-04-05 05:20:40,090 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 3.3625) internal successors, (269), 78 states have internal predecessors, (269), 51 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 258 [2022-04-05 05:20:40,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:20:40,092 INFO L225 Difference]: With dead ends: 459 [2022-04-05 05:20:40,092 INFO L226 Difference]: Without dead ends: 352 [2022-04-05 05:20:40,095 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 745 GetRequests, 565 SyntacticMatches, 1 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11014 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=5511, Invalid=27069, Unknown=0, NotChecked=0, Total=32580 [2022-04-05 05:20:40,095 INFO L913 BasicCegarLoop]: 84 mSDtfsCounter, 723 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 2527 mSolverCounterSat, 602 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 724 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 3129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 602 IncrementalHoareTripleChecker+Valid, 2527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-05 05:20:40,095 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [724 Valid, 146 Invalid, 3129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [602 Valid, 2527 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-05 05:20:40,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2022-04-05 05:20:40,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 251. [2022-04-05 05:20:40,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 200 states have (on average 1.02) internal successors, (204), 201 states have internal predecessors, (204), 28 states have call successors, (28), 23 states have call predecessors, (28), 22 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2022-04-05 05:20:40,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 259 transitions. [2022-04-05 05:20:40,110 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 259 transitions. Word has length 258 [2022-04-05 05:20:40,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:20:40,110 INFO L478 AbstractCegarLoop]: Abstraction has 251 states and 259 transitions. [2022-04-05 05:20:40,110 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 3.3625) internal successors, (269), 78 states have internal predecessors, (269), 51 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 05:20:40,110 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 259 transitions. [2022-04-05 05:20:40,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2022-04-05 05:20:40,111 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:20:40,111 INFO L499 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:20:40,133 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-04-05 05:20:40,324 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:20:40,324 INFO L403 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:20:40,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:20:40,325 INFO L85 PathProgramCache]: Analyzing trace with hash 462951412, now seen corresponding path program 29 times [2022-04-05 05:20:40,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:20:40,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890720254] [2022-04-05 05:20:40,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:20:40,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:20:40,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:41,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:20:41,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:41,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-04-05 05:20:41,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:41,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-04-05 05:20:41,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:41,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-04-05 05:20:41,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:41,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-04-05 05:20:41,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:41,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-04-05 05:20:41,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:41,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-04-05 05:20:41,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:41,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-04-05 05:20:41,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:41,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-04-05 05:20:41,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:41,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-04-05 05:20:41,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:41,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-04-05 05:20:41,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:41,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-04-05 05:20:41,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:41,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-04-05 05:20:41,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:41,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-04-05 05:20:41,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:41,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-04-05 05:20:41,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:41,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-04-05 05:20:41,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:41,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-04-05 05:20:41,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:41,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-04-05 05:20:41,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:41,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-04-05 05:20:41,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:41,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-04-05 05:20:41,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:41,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-04-05 05:20:41,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:41,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-04-05 05:20:41,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:41,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-04-05 05:20:41,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:41,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-04-05 05:20:41,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:41,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-04-05 05:20:41,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:41,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-04-05 05:20:41,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:41,119 INFO L134 CoverageAnalysis]: Checked inductivity of 3150 backedges. 1228 proven. 722 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2022-04-05 05:20:41,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:20:41,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890720254] [2022-04-05 05:20:41,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890720254] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:20:41,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131819484] [2022-04-05 05:20:41,120 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-05 05:20:41,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:20:41,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:20:41,121 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 05:20:41,122 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 05:20:41,229 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) [2022-04-05 05:20:41,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:20:41,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 743 conjuncts, 54 conjunts are in the unsatisfiable core [2022-04-05 05:20:41,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:20:42,531 INFO L134 CoverageAnalysis]: Checked inductivity of 3150 backedges. 1300 proven. 650 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2022-04-05 05:20:42,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:20:42,909 INFO L134 CoverageAnalysis]: Checked inductivity of 3150 backedges. 1300 proven. 650 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2022-04-05 05:20:42,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131819484] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:20:42,909 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:20:42,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 54, 54] total 83 [2022-04-05 05:20:42,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443817242] [2022-04-05 05:20:42,910 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:20:42,910 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2022-04-05 05:20:42,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:20:42,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2022-04-05 05:20:42,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1517, Invalid=5289, Unknown=0, NotChecked=0, Total=6806 [2022-04-05 05:20:42,911 INFO L87 Difference]: Start difference. First operand 251 states and 259 transitions. Second operand has 83 states, 83 states have (on average 2.710843373493976) internal successors, (225), 82 states have internal predecessors, (225), 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 05:20:44,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:20:44,526 INFO L93 Difference]: Finished difference Result 468 states and 554 transitions. [2022-04-05 05:20:44,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-04-05 05:20:44,527 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 2.710843373493976) internal successors, (225), 82 states have internal predecessors, (225), 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 268 [2022-04-05 05:20:44,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:20:44,528 INFO L225 Difference]: With dead ends: 468 [2022-04-05 05:20:44,528 INFO L226 Difference]: Without dead ends: 357 [2022-04-05 05:20:44,529 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 719 GetRequests, 586 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4870 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=4054, Invalid=14036, Unknown=0, NotChecked=0, Total=18090 [2022-04-05 05:20:44,530 INFO L913 BasicCegarLoop]: 64 mSDtfsCounter, 501 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1634 mSolverCounterSat, 352 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 502 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 1986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 352 IncrementalHoareTripleChecker+Valid, 1634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-05 05:20:44,530 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [502 Valid, 116 Invalid, 1986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [352 Valid, 1634 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-05 05:20:44,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2022-04-05 05:20:44,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 253. [2022-04-05 05:20:44,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 202 states have (on average 1.0198019801980198) internal successors, (206), 203 states have internal predecessors, (206), 28 states have call successors, (28), 23 states have call predecessors, (28), 22 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2022-04-05 05:20:44,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 261 transitions. [2022-04-05 05:20:44,542 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 261 transitions. Word has length 268 [2022-04-05 05:20:44,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:20:44,543 INFO L478 AbstractCegarLoop]: Abstraction has 253 states and 261 transitions. [2022-04-05 05:20:44,543 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 2.710843373493976) internal successors, (225), 82 states have internal predecessors, (225), 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 05:20:44,543 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 261 transitions. [2022-04-05 05:20:44,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2022-04-05 05:20:44,544 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:20:44,544 INFO L499 BasicCegarLoop]: trace histogram [27, 26, 26, 26, 26, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:20:44,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-04-05 05:20:44,759 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:20:44,759 INFO L403 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:20:44,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:20:44,760 INFO L85 PathProgramCache]: Analyzing trace with hash -799830441, now seen corresponding path program 30 times [2022-04-05 05:20:44,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:20:44,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887242095] [2022-04-05 05:20:44,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:20:44,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:20:44,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:45,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:20:45,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:45,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-04-05 05:20:45,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:45,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-04-05 05:20:45,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:45,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-04-05 05:20:45,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:45,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-04-05 05:20:45,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:45,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-04-05 05:20:45,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:45,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-04-05 05:20:45,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:45,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-04-05 05:20:45,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:45,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-04-05 05:20:45,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:45,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-04-05 05:20:45,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:45,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-04-05 05:20:45,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:45,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-04-05 05:20:45,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:45,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-04-05 05:20:45,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:45,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-04-05 05:20:45,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:45,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-04-05 05:20:45,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:45,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-04-05 05:20:45,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:45,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-04-05 05:20:45,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:45,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-04-05 05:20:45,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:45,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-04-05 05:20:45,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:45,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-04-05 05:20:45,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:45,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-04-05 05:20:45,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:45,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-04-05 05:20:45,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:45,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-04-05 05:20:45,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:45,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-04-05 05:20:45,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:45,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-04-05 05:20:45,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:45,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-04-05 05:20:45,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:45,126 INFO L134 CoverageAnalysis]: Checked inductivity of 3202 backedges. 700 proven. 1302 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2022-04-05 05:20:45,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:20:45,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887242095] [2022-04-05 05:20:45,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887242095] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:20:45,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147571306] [2022-04-05 05:20:45,127 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-05 05:20:45,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:20:45,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:20:45,128 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 05:20:45,129 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 05:20:45,256 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2022-04-05 05:20:45,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:20:45,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 753 conjuncts, 55 conjunts are in the unsatisfiable core [2022-04-05 05:20:45,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:20:45,564 INFO L134 CoverageAnalysis]: Checked inductivity of 3202 backedges. 752 proven. 1250 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2022-04-05 05:20:45,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:20:45,879 INFO L134 CoverageAnalysis]: Checked inductivity of 3202 backedges. 752 proven. 1250 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2022-04-05 05:20:45,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147571306] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:20:45,880 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:20:45,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 31, 31] total 36 [2022-04-05 05:20:45,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059056835] [2022-04-05 05:20:45,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:20:45,880 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-04-05 05:20:45,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:20:45,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-04-05 05:20:45,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=451, Invalid=809, Unknown=0, NotChecked=0, Total=1260 [2022-04-05 05:20:45,881 INFO L87 Difference]: Start difference. First operand 253 states and 261 transitions. Second operand has 36 states, 36 states have (on average 4.611111111111111) internal successors, (166), 33 states have internal predecessors, (166), 28 states have call successors, (32), 4 states have call predecessors, (32), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-04-05 05:20:46,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:20:46,472 INFO L93 Difference]: Finished difference Result 272 states and 282 transitions. [2022-04-05 05:20:46,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-04-05 05:20:46,473 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.611111111111111) internal successors, (166), 33 states have internal predecessors, (166), 28 states have call successors, (32), 4 states have call predecessors, (32), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Word has length 270 [2022-04-05 05:20:46,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:20:46,474 INFO L225 Difference]: With dead ends: 272 [2022-04-05 05:20:46,474 INFO L226 Difference]: Without dead ends: 270 [2022-04-05 05:20:46,474 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 680 GetRequests, 613 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 987 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1345, Invalid=3211, Unknown=0, NotChecked=0, Total=4556 [2022-04-05 05:20:46,475 INFO L913 BasicCegarLoop]: 47 mSDtfsCounter, 155 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 804 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-05 05:20:46,475 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 84 Invalid, 951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 804 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-05 05:20:46,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2022-04-05 05:20:46,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 265. [2022-04-05 05:20:46,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 211 states have (on average 1.018957345971564) internal successors, (215), 212 states have internal predecessors, (215), 30 states have call successors, (30), 24 states have call predecessors, (30), 23 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2022-04-05 05:20:46,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 274 transitions. [2022-04-05 05:20:46,487 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 274 transitions. Word has length 270 [2022-04-05 05:20:46,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:20:46,487 INFO L478 AbstractCegarLoop]: Abstraction has 265 states and 274 transitions. [2022-04-05 05:20:46,487 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 4.611111111111111) internal successors, (166), 33 states have internal predecessors, (166), 28 states have call successors, (32), 4 states have call predecessors, (32), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-04-05 05:20:46,487 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 274 transitions. [2022-04-05 05:20:46,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2022-04-05 05:20:46,488 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:20:46,488 INFO L499 BasicCegarLoop]: trace histogram [28, 28, 28, 27, 27, 27, 27, 27, 27, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:20:46,505 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2022-04-05 05:20:46,702 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,SelfDestructingSolverStorable32 [2022-04-05 05:20:46,703 INFO L403 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:20:46,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:20:46,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1396717185, now seen corresponding path program 31 times [2022-04-05 05:20:46,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:20:46,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738870194] [2022-04-05 05:20:46,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:20:46,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:20:46,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:47,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:20:47,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:47,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-04-05 05:20:47,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:47,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-04-05 05:20:47,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:47,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-04-05 05:20:47,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:47,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-04-05 05:20:47,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:47,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-04-05 05:20:47,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:47,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-04-05 05:20:47,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:47,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-04-05 05:20:47,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:47,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-04-05 05:20:47,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:47,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-04-05 05:20:47,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:47,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-04-05 05:20:47,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:47,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-04-05 05:20:47,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:47,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-04-05 05:20:47,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:47,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-04-05 05:20:47,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:47,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-04-05 05:20:47,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:47,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-04-05 05:20:47,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:47,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-04-05 05:20:47,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:47,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-04-05 05:20:47,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:47,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-04-05 05:20:47,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:47,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-04-05 05:20:47,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:47,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-04-05 05:20:47,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:47,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-04-05 05:20:47,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:47,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-04-05 05:20:47,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:47,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-04-05 05:20:47,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:47,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-04-05 05:20:47,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:47,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-04-05 05:20:47,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:47,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-04-05 05:20:47,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:47,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-04-05 05:20:47,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:47,577 INFO L134 CoverageAnalysis]: Checked inductivity of 3618 backedges. 1434 proven. 780 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2022-04-05 05:20:47,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:20:47,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738870194] [2022-04-05 05:20:47,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738870194] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:20:47,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552481090] [2022-04-05 05:20:47,577 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-05 05:20:47,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:20:47,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:20:47,578 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 05:20:47,580 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 05:20:47,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:47,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 787 conjuncts, 56 conjunts are in the unsatisfiable core [2022-04-05 05:20:47,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:20:49,043 INFO L134 CoverageAnalysis]: Checked inductivity of 3618 backedges. 1612 proven. 702 refuted. 0 times theorem prover too weak. 1304 trivial. 0 not checked. [2022-04-05 05:20:49,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:20:49,441 INFO L134 CoverageAnalysis]: Checked inductivity of 3618 backedges. 1510 proven. 702 refuted. 0 times theorem prover too weak. 1406 trivial. 0 not checked. [2022-04-05 05:20:49,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552481090] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:20:49,441 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:20:49,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 56, 56] total 87 [2022-04-05 05:20:49,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753539493] [2022-04-05 05:20:49,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:20:49,442 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2022-04-05 05:20:49,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:20:49,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2022-04-05 05:20:49,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1658, Invalid=5824, Unknown=0, NotChecked=0, Total=7482 [2022-04-05 05:20:49,443 INFO L87 Difference]: Start difference. First operand 265 states and 274 transitions. Second operand has 87 states, 87 states have (on average 2.7701149425287355) internal successors, (241), 86 states have internal predecessors, (241), 56 states have call successors, (59), 3 states have call predecessors, (59), 2 states have return successors, (57), 56 states have call predecessors, (57), 56 states have call successors, (57) [2022-04-05 05:20:51,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:20:51,058 INFO L93 Difference]: Finished difference Result 496 states and 586 transitions. [2022-04-05 05:20:51,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-04-05 05:20:51,059 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 2.7701149425287355) internal successors, (241), 86 states have internal predecessors, (241), 56 states have call successors, (59), 3 states have call predecessors, (59), 2 states have return successors, (57), 56 states have call predecessors, (57), 56 states have call successors, (57) Word has length 286 [2022-04-05 05:20:51,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:20:51,060 INFO L225 Difference]: With dead ends: 496 [2022-04-05 05:20:51,060 INFO L226 Difference]: Without dead ends: 375 [2022-04-05 05:20:51,062 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 765 GetRequests, 626 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5356 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=4387, Invalid=15353, Unknown=0, NotChecked=0, Total=19740 [2022-04-05 05:20:51,062 INFO L913 BasicCegarLoop]: 66 mSDtfsCounter, 509 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1452 mSolverCounterSat, 357 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 1809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 357 IncrementalHoareTripleChecker+Valid, 1452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-05 05:20:51,062 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [510 Valid, 108 Invalid, 1809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [357 Valid, 1452 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-05 05:20:51,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2022-04-05 05:20:51,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 267. [2022-04-05 05:20:51,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 213 states have (on average 1.0187793427230047) internal successors, (217), 214 states have internal predecessors, (217), 30 states have call successors, (30), 24 states have call predecessors, (30), 23 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2022-04-05 05:20:51,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 276 transitions. [2022-04-05 05:20:51,077 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 276 transitions. Word has length 286 [2022-04-05 05:20:51,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:20:51,077 INFO L478 AbstractCegarLoop]: Abstraction has 267 states and 276 transitions. [2022-04-05 05:20:51,077 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 2.7701149425287355) internal successors, (241), 86 states have internal predecessors, (241), 56 states have call successors, (59), 3 states have call predecessors, (59), 2 states have return successors, (57), 56 states have call predecessors, (57), 56 states have call successors, (57) [2022-04-05 05:20:51,077 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 276 transitions. [2022-04-05 05:20:51,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2022-04-05 05:20:51,079 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:20:51,079 INFO L499 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 27, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:20:51,101 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 05:20:51,295 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:20:51,296 INFO L403 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:20:51,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:20:51,296 INFO L85 PathProgramCache]: Analyzing trace with hash -2076929758, now seen corresponding path program 32 times [2022-04-05 05:20:51,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:20:51,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641113823] [2022-04-05 05:20:51,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:20:51,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:20:51,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:52,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:20:52,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:52,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-04-05 05:20:52,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:52,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-04-05 05:20:52,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:52,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-04-05 05:20:52,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:52,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-04-05 05:20:52,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:52,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-04-05 05:20:52,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:52,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-04-05 05:20:52,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:52,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-04-05 05:20:52,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:52,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-04-05 05:20:52,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:52,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-04-05 05:20:52,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:52,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-04-05 05:20:52,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:52,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-04-05 05:20:52,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:52,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-04-05 05:20:52,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:52,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-04-05 05:20:52,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:52,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-04-05 05:20:52,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:52,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-04-05 05:20:52,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:52,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-04-05 05:20:52,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:52,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-04-05 05:20:52,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:52,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-04-05 05:20:52,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:52,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-04-05 05:20:52,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:52,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-04-05 05:20:52,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:52,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-04-05 05:20:52,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:52,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-04-05 05:20:52,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:52,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-04-05 05:20:52,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:52,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-04-05 05:20:52,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:52,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-04-05 05:20:52,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:52,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-04-05 05:20:52,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:52,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-04-05 05:20:52,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:52,192 INFO L134 CoverageAnalysis]: Checked inductivity of 3672 backedges. 1434 proven. 834 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2022-04-05 05:20:52,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:20:52,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641113823] [2022-04-05 05:20:52,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641113823] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:20:52,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574264970] [2022-04-05 05:20:52,192 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 05:20:52,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:20:52,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:20:52,193 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 05:20:52,195 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 05:20:52,287 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 05:20:52,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:20:52,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 797 conjuncts, 58 conjunts are in the unsatisfiable core [2022-04-05 05:20:52,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:20:53,405 INFO L134 CoverageAnalysis]: Checked inductivity of 3672 backedges. 810 proven. 1458 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2022-04-05 05:20:53,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:20:54,015 INFO L134 CoverageAnalysis]: Checked inductivity of 3672 backedges. 810 proven. 1458 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2022-04-05 05:20:54,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574264970] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:20:54,015 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:20:54,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 32, 32] total 89 [2022-04-05 05:20:54,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660025361] [2022-04-05 05:20:54,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:20:54,016 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2022-04-05 05:20:54,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:20:54,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2022-04-05 05:20:54,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1282, Invalid=6550, Unknown=0, NotChecked=0, Total=7832 [2022-04-05 05:20:54,017 INFO L87 Difference]: Start difference. First operand 267 states and 276 transitions. Second operand has 89 states, 89 states have (on average 3.359550561797753) internal successors, (299), 87 states have internal predecessors, (299), 57 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 05:20:57,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:20:57,308 INFO L93 Difference]: Finished difference Result 509 states and 603 transitions. [2022-04-05 05:20:57,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2022-04-05 05:20:57,308 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 3.359550561797753) internal successors, (299), 87 states have internal predecessors, (299), 57 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 288 [2022-04-05 05:20:57,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:20:57,309 INFO L225 Difference]: With dead ends: 509 [2022-04-05 05:20:57,309 INFO L226 Difference]: Without dead ends: 390 [2022-04-05 05:20:57,321 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 832 GetRequests, 631 SyntacticMatches, 1 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13849 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=6843, Invalid=33759, Unknown=0, NotChecked=0, Total=40602 [2022-04-05 05:20:57,321 INFO L913 BasicCegarLoop]: 93 mSDtfsCounter, 972 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 3561 mSolverCounterSat, 789 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 973 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 4350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 789 IncrementalHoareTripleChecker+Valid, 3561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-04-05 05:20:57,321 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [973 Valid, 175 Invalid, 4350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [789 Valid, 3561 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-04-05 05:20:57,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2022-04-05 05:20:57,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 277. [2022-04-05 05:20:57,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 221 states have (on average 1.0180995475113122) internal successors, (225), 222 states have internal predecessors, (225), 31 states have call successors, (31), 25 states have call predecessors, (31), 24 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2022-04-05 05:20:57,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 286 transitions. [2022-04-05 05:20:57,334 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 286 transitions. Word has length 288 [2022-04-05 05:20:57,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:20:57,334 INFO L478 AbstractCegarLoop]: Abstraction has 277 states and 286 transitions. [2022-04-05 05:20:57,335 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 3.359550561797753) internal successors, (299), 87 states have internal predecessors, (299), 57 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 05:20:57,335 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 286 transitions. [2022-04-05 05:20:57,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-04-05 05:20:57,336 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:20:57,336 INFO L499 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 28, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:20:57,353 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2022-04-05 05:20:57,553 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:20:57,553 INFO L403 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:20:57,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:20:57,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1023800729, now seen corresponding path program 33 times [2022-04-05 05:20:57,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:20:57,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304982324] [2022-04-05 05:20:57,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:20:57,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:20:57,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:58,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:20:58,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:58,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-04-05 05:20:58,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:58,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-04-05 05:20:58,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:58,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-04-05 05:20:58,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:58,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-04-05 05:20:58,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:58,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-04-05 05:20:58,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:58,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-04-05 05:20:58,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:58,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-04-05 05:20:58,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:58,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-04-05 05:20:58,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:58,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-04-05 05:20:58,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:58,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-04-05 05:20:58,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:58,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-04-05 05:20:58,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:58,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-04-05 05:20:58,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:58,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-04-05 05:20:58,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:58,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-04-05 05:20:58,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:58,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-04-05 05:20:58,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:58,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-04-05 05:20:58,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:58,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-04-05 05:20:58,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:58,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-04-05 05:20:58,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:58,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-04-05 05:20:58,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:58,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-04-05 05:20:58,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:58,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-04-05 05:20:58,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:58,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-04-05 05:20:58,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:58,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-04-05 05:20:58,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:58,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-04-05 05:20:58,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:58,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-04-05 05:20:58,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:58,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-04-05 05:20:58,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:58,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-04-05 05:20:58,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:58,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-04-05 05:20:58,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:20:58,498 INFO L134 CoverageAnalysis]: Checked inductivity of 3948 backedges. 1543 proven. 893 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2022-04-05 05:20:58,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:20:58,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304982324] [2022-04-05 05:20:58,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304982324] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:20:58,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207601044] [2022-04-05 05:20:58,499 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-05 05:20:58,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:20:58,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:20:58,499 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 05:20:58,500 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 05:20:58,623 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 29 check-sat command(s) [2022-04-05 05:20:58,624 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:20:58,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 824 conjuncts, 60 conjunts are in the unsatisfiable core [2022-04-05 05:20:58,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:20:59,773 INFO L134 CoverageAnalysis]: Checked inductivity of 3948 backedges. 868 proven. 1568 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2022-04-05 05:20:59,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:21:00,158 INFO L134 CoverageAnalysis]: Checked inductivity of 3948 backedges. 868 proven. 1568 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2022-04-05 05:21:00,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207601044] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:21:00,158 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:21:00,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 33, 33] total 92 [2022-04-05 05:21:00,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014476020] [2022-04-05 05:21:00,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:21:00,159 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2022-04-05 05:21:00,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:21:00,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2022-04-05 05:21:00,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1371, Invalid=7001, Unknown=0, NotChecked=0, Total=8372 [2022-04-05 05:21:00,160 INFO L87 Difference]: Start difference. First operand 277 states and 286 transitions. Second operand has 92 states, 92 states have (on average 3.358695652173913) internal successors, (309), 90 states have internal predecessors, (309), 59 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 05:21:03,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:21:03,351 INFO L93 Difference]: Finished difference Result 527 states and 624 transitions. [2022-04-05 05:21:03,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2022-04-05 05:21:03,351 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 3.358695652173913) internal successors, (309), 90 states have internal predecessors, (309), 59 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 298 [2022-04-05 05:21:03,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:21:03,352 INFO L225 Difference]: With dead ends: 527 [2022-04-05 05:21:03,352 INFO L226 Difference]: Without dead ends: 404 [2022-04-05 05:21:03,360 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 861 GetRequests, 653 SyntacticMatches, 1 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14866 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=7319, Invalid=36153, Unknown=0, NotChecked=0, Total=43472 [2022-04-05 05:21:03,361 INFO L913 BasicCegarLoop]: 96 mSDtfsCounter, 845 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 3409 mSolverCounterSat, 731 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 4140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 731 IncrementalHoareTripleChecker+Valid, 3409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-04-05 05:21:03,361 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [846 Valid, 173 Invalid, 4140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [731 Valid, 3409 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-04-05 05:21:03,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2022-04-05 05:21:03,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 287. [2022-04-05 05:21:03,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 229 states have (on average 1.017467248908297) internal successors, (233), 230 states have internal predecessors, (233), 32 states have call successors, (32), 26 states have call predecessors, (32), 25 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2022-04-05 05:21:03,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 296 transitions. [2022-04-05 05:21:03,378 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 296 transitions. Word has length 298 [2022-04-05 05:21:03,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:21:03,379 INFO L478 AbstractCegarLoop]: Abstraction has 287 states and 296 transitions. [2022-04-05 05:21:03,379 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 3.358695652173913) internal successors, (309), 90 states have internal predecessors, (309), 59 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 05:21:03,379 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 296 transitions. [2022-04-05 05:21:03,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2022-04-05 05:21:03,380 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:21:03,380 INFO L499 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 29, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:21:03,397 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 05:21:03,595 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,SelfDestructingSolverStorable35 [2022-04-05 05:21:03,595 INFO L403 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:21:03,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:21:03,596 INFO L85 PathProgramCache]: Analyzing trace with hash 313307984, now seen corresponding path program 34 times [2022-04-05 05:21:03,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:21:03,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539462145] [2022-04-05 05:21:03,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:21:03,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:21:03,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:04,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:21:04,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:04,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-04-05 05:21:04,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:04,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-04-05 05:21:04,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:04,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-04-05 05:21:04,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:04,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-04-05 05:21:04,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:04,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-04-05 05:21:04,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:04,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-04-05 05:21:04,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:04,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-04-05 05:21:04,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:04,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-04-05 05:21:04,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:04,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-04-05 05:21:04,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:04,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-04-05 05:21:04,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:04,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-04-05 05:21:04,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:04,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-04-05 05:21:04,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:04,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-04-05 05:21:04,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:04,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-04-05 05:21:04,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:04,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-04-05 05:21:04,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:04,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-04-05 05:21:04,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:04,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-04-05 05:21:04,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:04,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-04-05 05:21:04,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:04,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-04-05 05:21:04,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:04,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-04-05 05:21:04,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:04,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-04-05 05:21:04,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:04,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-04-05 05:21:04,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:04,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-04-05 05:21:04,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:04,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-04-05 05:21:04,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:04,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-04-05 05:21:04,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:04,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-04-05 05:21:04,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:04,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-04-05 05:21:04,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:04,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-04-05 05:21:04,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:04,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-04-05 05:21:04,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:04,572 INFO L134 CoverageAnalysis]: Checked inductivity of 4234 backedges. 1656 proven. 954 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2022-04-05 05:21:04,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:21:04,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539462145] [2022-04-05 05:21:04,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539462145] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:21:04,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824484766] [2022-04-05 05:21:04,573 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-05 05:21:04,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:21:04,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:21:04,574 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 05:21:04,575 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 05:21:04,679 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-05 05:21:04,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:21:04,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 851 conjuncts, 62 conjunts are in the unsatisfiable core [2022-04-05 05:21:04,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:21:05,953 INFO L134 CoverageAnalysis]: Checked inductivity of 4234 backedges. 928 proven. 1682 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2022-04-05 05:21:05,953 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:21:06,404 INFO L134 CoverageAnalysis]: Checked inductivity of 4234 backedges. 928 proven. 1682 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2022-04-05 05:21:06,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824484766] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:21:06,405 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:21:06,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 34, 34] total 95 [2022-04-05 05:21:06,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713231954] [2022-04-05 05:21:06,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:21:06,405 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2022-04-05 05:21:06,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:21:06,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2022-04-05 05:21:06,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1463, Invalid=7467, Unknown=0, NotChecked=0, Total=8930 [2022-04-05 05:21:06,407 INFO L87 Difference]: Start difference. First operand 287 states and 296 transitions. Second operand has 95 states, 95 states have (on average 3.357894736842105) internal successors, (319), 93 states have internal predecessors, (319), 61 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 05:21:09,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:21:09,988 INFO L93 Difference]: Finished difference Result 545 states and 645 transitions. [2022-04-05 05:21:09,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2022-04-05 05:21:09,988 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 3.357894736842105) internal successors, (319), 93 states have internal predecessors, (319), 61 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 308 [2022-04-05 05:21:09,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:21:09,990 INFO L225 Difference]: With dead ends: 545 [2022-04-05 05:21:09,990 INFO L226 Difference]: Without dead ends: 418 [2022-04-05 05:21:09,992 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 890 GetRequests, 675 SyntacticMatches, 1 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15919 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=7811, Invalid=38629, Unknown=0, NotChecked=0, Total=46440 [2022-04-05 05:21:09,993 INFO L913 BasicCegarLoop]: 99 mSDtfsCounter, 838 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 3433 mSolverCounterSat, 805 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 839 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 4238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 805 IncrementalHoareTripleChecker+Valid, 3433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-04-05 05:21:09,993 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [839 Valid, 171 Invalid, 4238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [805 Valid, 3433 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-04-05 05:21:09,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2022-04-05 05:21:10,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 297. [2022-04-05 05:21:10,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 237 states have (on average 1.0168776371308017) internal successors, (241), 238 states have internal predecessors, (241), 33 states have call successors, (33), 27 states have call predecessors, (33), 26 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2022-04-05 05:21:10,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 306 transitions. [2022-04-05 05:21:10,008 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 306 transitions. Word has length 308 [2022-04-05 05:21:10,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:21:10,008 INFO L478 AbstractCegarLoop]: Abstraction has 297 states and 306 transitions. [2022-04-05 05:21:10,008 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 95 states have (on average 3.357894736842105) internal successors, (319), 93 states have internal predecessors, (319), 61 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 05:21:10,008 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 306 transitions. [2022-04-05 05:21:10,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2022-04-05 05:21:10,009 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:21:10,009 INFO L499 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:21:10,037 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 05:21:10,223 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,SelfDestructingSolverStorable36 [2022-04-05 05:21:10,224 INFO L403 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:21:10,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:21:10,224 INFO L85 PathProgramCache]: Analyzing trace with hash 2077768263, now seen corresponding path program 35 times [2022-04-05 05:21:10,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:21:10,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244938439] [2022-04-05 05:21:10,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:21:10,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:21:10,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:11,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:21:11,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:11,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-04-05 05:21:11,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:11,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-04-05 05:21:11,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:11,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-04-05 05:21:11,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:11,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-04-05 05:21:11,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:11,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-04-05 05:21:11,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:11,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-04-05 05:21:11,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:11,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-04-05 05:21:11,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:11,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-04-05 05:21:11,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:11,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-04-05 05:21:11,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:11,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-04-05 05:21:11,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:11,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-04-05 05:21:11,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:11,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-04-05 05:21:11,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:11,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-04-05 05:21:11,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:11,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-04-05 05:21:11,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:11,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-04-05 05:21:11,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:11,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-04-05 05:21:11,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:11,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-04-05 05:21:11,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:11,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-04-05 05:21:11,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:11,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-04-05 05:21:11,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:11,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-04-05 05:21:11,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:11,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-04-05 05:21:11,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:11,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-04-05 05:21:11,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:11,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-04-05 05:21:11,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:11,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-04-05 05:21:11,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:11,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-04-05 05:21:11,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:11,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-04-05 05:21:11,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:11,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-04-05 05:21:11,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:11,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-04-05 05:21:11,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:11,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-04-05 05:21:11,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:11,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-04-05 05:21:11,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:11,295 INFO L134 CoverageAnalysis]: Checked inductivity of 4530 backedges. 1773 proven. 1017 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2022-04-05 05:21:11,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:21:11,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244938439] [2022-04-05 05:21:11,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244938439] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:21:11,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96367698] [2022-04-05 05:21:11,296 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-05 05:21:11,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:21:11,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:21:11,297 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 05:21:11,298 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 05:21:11,435 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2022-04-05 05:21:11,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:21:11,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 878 conjuncts, 64 conjunts are in the unsatisfiable core [2022-04-05 05:21:11,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:21:13,080 INFO L134 CoverageAnalysis]: Checked inductivity of 4530 backedges. 1860 proven. 930 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2022-04-05 05:21:13,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:21:13,507 INFO L134 CoverageAnalysis]: Checked inductivity of 4530 backedges. 1860 proven. 930 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2022-04-05 05:21:13,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [96367698] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:21:13,507 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:21:13,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 64, 64] total 98 [2022-04-05 05:21:13,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232616082] [2022-04-05 05:21:13,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:21:13,508 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2022-04-05 05:21:13,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:21:13,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2022-04-05 05:21:13,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2117, Invalid=7389, Unknown=0, NotChecked=0, Total=9506 [2022-04-05 05:21:13,509 INFO L87 Difference]: Start difference. First operand 297 states and 306 transitions. Second operand has 98 states, 98 states have (on average 2.704081632653061) internal successors, (265), 97 states have internal predecessors, (265), 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 05:21:15,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:21:15,289 INFO L93 Difference]: Finished difference Result 554 states and 656 transitions. [2022-04-05 05:21:15,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-04-05 05:21:15,289 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 2.704081632653061) internal successors, (265), 97 states have internal predecessors, (265), 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 318 [2022-04-05 05:21:15,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:21:15,291 INFO L225 Difference]: With dead ends: 554 [2022-04-05 05:21:15,291 INFO L226 Difference]: Without dead ends: 423 [2022-04-05 05:21:15,293 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 854 GetRequests, 696 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6895 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=5684, Invalid=19756, Unknown=0, NotChecked=0, Total=25440 [2022-04-05 05:21:15,293 INFO L913 BasicCegarLoop]: 74 mSDtfsCounter, 687 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1742 mSolverCounterSat, 369 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 2111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 369 IncrementalHoareTripleChecker+Valid, 1742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-05 05:21:15,293 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [688 Valid, 126 Invalid, 2111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [369 Valid, 1742 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-05 05:21:15,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2022-04-05 05:21:15,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 299. [2022-04-05 05:21:15,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 239 states have (on average 1.0167364016736402) internal successors, (243), 240 states have internal predecessors, (243), 33 states have call successors, (33), 27 states have call predecessors, (33), 26 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2022-04-05 05:21:15,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 308 transitions. [2022-04-05 05:21:15,324 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 308 transitions. Word has length 318 [2022-04-05 05:21:15,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:21:15,324 INFO L478 AbstractCegarLoop]: Abstraction has 299 states and 308 transitions. [2022-04-05 05:21:15,324 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 2.704081632653061) internal successors, (265), 97 states have internal predecessors, (265), 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 05:21:15,324 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 308 transitions. [2022-04-05 05:21:15,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-04-05 05:21:15,325 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:21:15,325 INFO L499 BasicCegarLoop]: trace histogram [32, 31, 31, 31, 31, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:21:15,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-04-05 05:21:15,539 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,SelfDestructingSolverStorable37 [2022-04-05 05:21:15,539 INFO L403 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:21:15,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:21:15,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1456322026, now seen corresponding path program 36 times [2022-04-05 05:21:15,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:21:15,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605791385] [2022-04-05 05:21:15,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:21:15,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:21:15,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:16,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:21:16,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:16,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-04-05 05:21:16,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:16,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-04-05 05:21:16,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:16,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-04-05 05:21:16,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:16,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-04-05 05:21:16,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:16,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-04-05 05:21:16,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:16,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-04-05 05:21:16,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:16,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-04-05 05:21:16,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:16,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-04-05 05:21:16,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:16,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-04-05 05:21:16,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:16,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-04-05 05:21:16,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:16,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-04-05 05:21:16,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:16,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-04-05 05:21:16,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:16,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-04-05 05:21:16,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:16,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-04-05 05:21:16,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:16,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-04-05 05:21:16,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:16,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-04-05 05:21:16,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:16,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-04-05 05:21:16,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:16,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-04-05 05:21:16,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:16,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-04-05 05:21:16,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:16,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-04-05 05:21:16,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:16,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-04-05 05:21:16,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:16,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-04-05 05:21:16,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:16,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-04-05 05:21:16,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:16,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-04-05 05:21:16,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:16,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-04-05 05:21:16,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:16,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-04-05 05:21:16,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:16,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-04-05 05:21:16,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:16,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-04-05 05:21:16,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:16,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-04-05 05:21:16,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:16,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-04-05 05:21:16,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:16,071 INFO L134 CoverageAnalysis]: Checked inductivity of 4592 backedges. 990 proven. 1862 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2022-04-05 05:21:16,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:21:16,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605791385] [2022-04-05 05:21:16,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605791385] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:21:16,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143615438] [2022-04-05 05:21:16,071 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-05 05:21:16,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:21:16,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:21:16,072 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 05:21:16,073 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 05:21:16,216 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 32 check-sat command(s) [2022-04-05 05:21:16,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:21:16,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 888 conjuncts, 65 conjunts are in the unsatisfiable core [2022-04-05 05:21:16,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:21:16,720 INFO L134 CoverageAnalysis]: Checked inductivity of 4592 backedges. 1052 proven. 1800 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2022-04-05 05:21:16,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:21:17,188 INFO L134 CoverageAnalysis]: Checked inductivity of 4592 backedges. 1052 proven. 1800 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2022-04-05 05:21:17,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143615438] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:21:17,188 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:21:17,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 36, 36] total 41 [2022-04-05 05:21:17,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767379227] [2022-04-05 05:21:17,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:21:17,189 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-04-05 05:21:17,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:21:17,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-04-05 05:21:17,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=611, Invalid=1029, Unknown=0, NotChecked=0, Total=1640 [2022-04-05 05:21:17,190 INFO L87 Difference]: Start difference. First operand 299 states and 308 transitions. Second operand has 41 states, 41 states have (on average 4.658536585365853) internal successors, (191), 38 states have internal predecessors, (191), 33 states have call successors, (37), 4 states have call predecessors, (37), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2022-04-05 05:21:17,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:21:18,000 INFO L93 Difference]: Finished difference Result 318 states and 329 transitions. [2022-04-05 05:21:18,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-04-05 05:21:18,000 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 4.658536585365853) internal successors, (191), 38 states have internal predecessors, (191), 33 states have call successors, (37), 4 states have call predecessors, (37), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Word has length 320 [2022-04-05 05:21:18,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:21:18,001 INFO L225 Difference]: With dead ends: 318 [2022-04-05 05:21:18,001 INFO L226 Difference]: Without dead ends: 316 [2022-04-05 05:21:18,002 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 805 GetRequests, 728 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1252 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1825, Invalid=4181, Unknown=0, NotChecked=0, Total=6006 [2022-04-05 05:21:18,002 INFO L913 BasicCegarLoop]: 52 mSDtfsCounter, 166 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1051 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 1223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 1051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-05 05:21:18,002 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 99 Invalid, 1223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 1051 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-05 05:21:18,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2022-04-05 05:21:18,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 311. [2022-04-05 05:21:18,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 248 states have (on average 1.0161290322580645) internal successors, (252), 249 states have internal predecessors, (252), 35 states have call successors, (35), 28 states have call predecessors, (35), 27 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2022-04-05 05:21:18,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 321 transitions. [2022-04-05 05:21:18,017 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 321 transitions. Word has length 320 [2022-04-05 05:21:18,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:21:18,018 INFO L478 AbstractCegarLoop]: Abstraction has 311 states and 321 transitions. [2022-04-05 05:21:18,018 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 4.658536585365853) internal successors, (191), 38 states have internal predecessors, (191), 33 states have call successors, (37), 4 states have call predecessors, (37), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2022-04-05 05:21:18,018 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 321 transitions. [2022-04-05 05:21:18,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2022-04-05 05:21:18,019 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:21:18,019 INFO L499 BasicCegarLoop]: trace histogram [33, 33, 33, 32, 32, 32, 32, 32, 32, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:21:18,037 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 05:21:18,235 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-04-05 05:21:18,235 INFO L403 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:21:18,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:21:18,236 INFO L85 PathProgramCache]: Analyzing trace with hash 831941394, now seen corresponding path program 37 times [2022-04-05 05:21:18,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:21:18,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099840876] [2022-04-05 05:21:18,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:21:18,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:21:18,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:19,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:21:19,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:19,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-04-05 05:21:19,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:19,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-04-05 05:21:19,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:19,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-04-05 05:21:19,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:19,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-04-05 05:21:19,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:19,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-04-05 05:21:19,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:19,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-04-05 05:21:19,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:19,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-04-05 05:21:19,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:19,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-04-05 05:21:19,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:19,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-04-05 05:21:19,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:19,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-04-05 05:21:19,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:19,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-04-05 05:21:19,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:19,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-04-05 05:21:19,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:19,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-04-05 05:21:19,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:19,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-04-05 05:21:19,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:19,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-04-05 05:21:19,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:19,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-04-05 05:21:19,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:19,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-04-05 05:21:19,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:19,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-04-05 05:21:19,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:19,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-04-05 05:21:19,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:19,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-04-05 05:21:19,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:19,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-04-05 05:21:19,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:19,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-04-05 05:21:19,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:19,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-04-05 05:21:19,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:19,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-04-05 05:21:19,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:19,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-04-05 05:21:19,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:19,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-04-05 05:21:19,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:19,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-04-05 05:21:19,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:19,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-04-05 05:21:19,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:19,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-04-05 05:21:19,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:19,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-04-05 05:21:19,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:19,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-04-05 05:21:19,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:19,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-04-05 05:21:19,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:19,387 INFO L134 CoverageAnalysis]: Checked inductivity of 5088 backedges. 2019 proven. 1085 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2022-04-05 05:21:19,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:21:19,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099840876] [2022-04-05 05:21:19,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099840876] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:21:19,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087284020] [2022-04-05 05:21:19,388 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-05 05:21:19,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:21:19,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:21:19,389 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 05:21:19,389 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 05:21:19,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:19,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 922 conjuncts, 66 conjunts are in the unsatisfiable core [2022-04-05 05:21:19,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:21:21,229 INFO L134 CoverageAnalysis]: Checked inductivity of 5088 backedges. 2232 proven. 992 refuted. 0 times theorem prover too weak. 1864 trivial. 0 not checked. [2022-04-05 05:21:21,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:21:21,643 INFO L134 CoverageAnalysis]: Checked inductivity of 5088 backedges. 2110 proven. 992 refuted. 0 times theorem prover too weak. 1986 trivial. 0 not checked. [2022-04-05 05:21:21,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087284020] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:21:21,644 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:21:21,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 66, 66] total 102 [2022-04-05 05:21:21,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343155755] [2022-04-05 05:21:21,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:21:21,644 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2022-04-05 05:21:21,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:21:21,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2022-04-05 05:21:21,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2283, Invalid=8019, Unknown=0, NotChecked=0, Total=10302 [2022-04-05 05:21:21,646 INFO L87 Difference]: Start difference. First operand 311 states and 321 transitions. Second operand has 102 states, 102 states have (on average 2.7549019607843137) internal successors, (281), 101 states have internal predecessors, (281), 66 states have call successors, (69), 3 states have call predecessors, (69), 2 states have return successors, (67), 66 states have call predecessors, (67), 66 states have call successors, (67) [2022-04-05 05:21:23,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:21:23,644 INFO L93 Difference]: Finished difference Result 582 states and 688 transitions. [2022-04-05 05:21:23,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-04-05 05:21:23,644 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 2.7549019607843137) internal successors, (281), 101 states have internal predecessors, (281), 66 states have call successors, (69), 3 states have call predecessors, (69), 2 states have return successors, (67), 66 states have call predecessors, (67), 66 states have call successors, (67) Word has length 336 [2022-04-05 05:21:23,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:21:23,648 INFO L225 Difference]: With dead ends: 582 [2022-04-05 05:21:23,648 INFO L226 Difference]: Without dead ends: 441 [2022-04-05 05:21:23,650 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 900 GetRequests, 736 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7471 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=6077, Invalid=21313, Unknown=0, NotChecked=0, Total=27390 [2022-04-05 05:21:23,650 INFO L913 BasicCegarLoop]: 76 mSDtfsCounter, 668 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 2076 mSolverCounterSat, 456 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 2532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 456 IncrementalHoareTripleChecker+Valid, 2076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-04-05 05:21:23,652 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [669 Valid, 138 Invalid, 2532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [456 Valid, 2076 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-05 05:21:23,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2022-04-05 05:21:23,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 313. [2022-04-05 05:21:23,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 250 states have (on average 1.016) internal successors, (254), 251 states have internal predecessors, (254), 35 states have call successors, (35), 28 states have call predecessors, (35), 27 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2022-04-05 05:21:23,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 323 transitions. [2022-04-05 05:21:23,669 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 323 transitions. Word has length 336 [2022-04-05 05:21:23,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:21:23,669 INFO L478 AbstractCegarLoop]: Abstraction has 313 states and 323 transitions. [2022-04-05 05:21:23,670 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 102 states have (on average 2.7549019607843137) internal successors, (281), 101 states have internal predecessors, (281), 66 states have call successors, (69), 3 states have call predecessors, (69), 2 states have return successors, (67), 66 states have call predecessors, (67), 66 states have call successors, (67) [2022-04-05 05:21:23,670 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 323 transitions. [2022-04-05 05:21:23,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2022-04-05 05:21:23,671 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:21:23,671 INFO L499 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 32, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:21:23,688 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2022-04-05 05:21:23,887 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,SelfDestructingSolverStorable39 [2022-04-05 05:21:23,887 INFO L403 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:21:23,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:21:23,888 INFO L85 PathProgramCache]: Analyzing trace with hash -373333003, now seen corresponding path program 38 times [2022-04-05 05:21:23,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:21:23,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544166563] [2022-04-05 05:21:23,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:21:23,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:21:23,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:24,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:21:24,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:24,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-04-05 05:21:24,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:24,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-04-05 05:21:24,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:24,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-04-05 05:21:24,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:24,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-04-05 05:21:24,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:24,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-04-05 05:21:24,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:24,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-04-05 05:21:24,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:24,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-04-05 05:21:24,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:24,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-04-05 05:21:24,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:24,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-04-05 05:21:24,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:24,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-04-05 05:21:24,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:24,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-04-05 05:21:24,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:24,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-04-05 05:21:24,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:24,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-04-05 05:21:24,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:24,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-04-05 05:21:24,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:24,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-04-05 05:21:24,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:24,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-04-05 05:21:24,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:24,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-04-05 05:21:24,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:24,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-04-05 05:21:24,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:24,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-04-05 05:21:24,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:24,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-04-05 05:21:24,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:24,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-04-05 05:21:24,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:25,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-04-05 05:21:25,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:25,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-04-05 05:21:25,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:25,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-04-05 05:21:25,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:25,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-04-05 05:21:25,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:25,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-04-05 05:21:25,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:25,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-04-05 05:21:25,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:25,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-04-05 05:21:25,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:25,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-04-05 05:21:25,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:25,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-04-05 05:21:25,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:25,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-04-05 05:21:25,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:25,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-04-05 05:21:25,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:25,017 INFO L134 CoverageAnalysis]: Checked inductivity of 5152 backedges. 2019 proven. 1149 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2022-04-05 05:21:25,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:21:25,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544166563] [2022-04-05 05:21:25,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544166563] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:21:25,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625104110] [2022-04-05 05:21:25,017 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 05:21:25,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:21:25,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:21:25,018 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 05:21:25,019 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 05:21:25,128 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 05:21:25,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:21:25,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 932 conjuncts, 68 conjunts are in the unsatisfiable core [2022-04-05 05:21:25,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:21:26,612 INFO L134 CoverageAnalysis]: Checked inductivity of 5152 backedges. 1120 proven. 2048 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2022-04-05 05:21:26,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:21:27,050 INFO L134 CoverageAnalysis]: Checked inductivity of 5152 backedges. 1120 proven. 2048 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2022-04-05 05:21:27,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625104110] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:21:27,051 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:21:27,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 37, 37] total 104 [2022-04-05 05:21:27,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988682830] [2022-04-05 05:21:27,051 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:21:27,052 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2022-04-05 05:21:27,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:21:27,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2022-04-05 05:21:27,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1757, Invalid=8955, Unknown=0, NotChecked=0, Total=10712 [2022-04-05 05:21:27,053 INFO L87 Difference]: Start difference. First operand 313 states and 323 transitions. Second operand has 104 states, 104 states have (on average 3.355769230769231) internal successors, (349), 102 states have internal predecessors, (349), 67 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 05:21:30,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:21:30,867 INFO L93 Difference]: Finished difference Result 595 states and 705 transitions. [2022-04-05 05:21:30,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2022-04-05 05:21:30,867 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 3.355769230769231) internal successors, (349), 102 states have internal predecessors, (349), 67 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 338 [2022-04-05 05:21:30,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:21:30,869 INFO L225 Difference]: With dead ends: 595 [2022-04-05 05:21:30,869 INFO L226 Difference]: Without dead ends: 456 [2022-04-05 05:21:30,873 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 977 GetRequests, 741 SyntacticMatches, 1 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19294 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=9383, Invalid=46549, Unknown=0, NotChecked=0, Total=55932 [2022-04-05 05:21:30,873 INFO L913 BasicCegarLoop]: 108 mSDtfsCounter, 1109 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 3721 mSolverCounterSat, 948 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1110 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 4669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 948 IncrementalHoareTripleChecker+Valid, 3721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-04-05 05:21:30,873 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1110 Valid, 170 Invalid, 4669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [948 Valid, 3721 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-04-05 05:21:30,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2022-04-05 05:21:30,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 323. [2022-04-05 05:21:30,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 258 states have (on average 1.0155038759689923) internal successors, (262), 259 states have internal predecessors, (262), 36 states have call successors, (36), 29 states have call predecessors, (36), 28 states have return successors, (35), 34 states have call predecessors, (35), 35 states have call successors, (35) [2022-04-05 05:21:30,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 333 transitions. [2022-04-05 05:21:30,891 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 333 transitions. Word has length 338 [2022-04-05 05:21:30,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:21:30,891 INFO L478 AbstractCegarLoop]: Abstraction has 323 states and 333 transitions. [2022-04-05 05:21:30,891 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 3.355769230769231) internal successors, (349), 102 states have internal predecessors, (349), 67 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 05:21:30,891 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 333 transitions. [2022-04-05 05:21:30,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2022-04-05 05:21:30,893 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:21:30,893 INFO L499 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 33, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:21:30,910 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 05:21:31,093 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,SelfDestructingSolverStorable40 [2022-04-05 05:21:31,093 INFO L403 AbstractCegarLoop]: === Iteration 42 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:21:31,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:21:31,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1595795116, now seen corresponding path program 39 times [2022-04-05 05:21:31,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:21:31,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768129039] [2022-04-05 05:21:31,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:21:31,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:21:31,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:32,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:21:32,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:32,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-04-05 05:21:32,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:32,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-04-05 05:21:32,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:32,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-04-05 05:21:32,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:32,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-04-05 05:21:32,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:32,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-04-05 05:21:32,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:32,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-04-05 05:21:32,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:32,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-04-05 05:21:32,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:32,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-04-05 05:21:32,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:32,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-04-05 05:21:32,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:32,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-04-05 05:21:32,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:32,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-04-05 05:21:32,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:32,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-04-05 05:21:32,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:32,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-04-05 05:21:32,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:32,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-04-05 05:21:32,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:32,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-04-05 05:21:32,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:32,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-04-05 05:21:32,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:32,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-04-05 05:21:32,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:32,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-04-05 05:21:32,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:32,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-04-05 05:21:32,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:32,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-04-05 05:21:32,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:32,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-04-05 05:21:32,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:32,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-04-05 05:21:32,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:32,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-04-05 05:21:32,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:32,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-04-05 05:21:32,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:32,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-04-05 05:21:32,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:32,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-04-05 05:21:32,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:32,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-04-05 05:21:32,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:32,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-04-05 05:21:32,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:32,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-04-05 05:21:32,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:32,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-04-05 05:21:32,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:32,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-04-05 05:21:32,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:32,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-04-05 05:21:32,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:32,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-04-05 05:21:32,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:32,330 INFO L134 CoverageAnalysis]: Checked inductivity of 5478 backedges. 2148 proven. 1218 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2022-04-05 05:21:32,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:21:32,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768129039] [2022-04-05 05:21:32,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768129039] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:21:32,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891873810] [2022-04-05 05:21:32,331 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-05 05:21:32,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:21:32,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:21:32,331 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 05:21:32,333 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 05:21:32,481 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2022-04-05 05:21:32,481 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:21:32,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 959 conjuncts, 70 conjunts are in the unsatisfiable core [2022-04-05 05:21:32,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:21:34,055 INFO L134 CoverageAnalysis]: Checked inductivity of 5478 backedges. 1188 proven. 2178 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2022-04-05 05:21:34,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:21:34,564 INFO L134 CoverageAnalysis]: Checked inductivity of 5478 backedges. 1188 proven. 2178 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2022-04-05 05:21:34,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891873810] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:21:34,564 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:21:34,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 38, 38] total 107 [2022-04-05 05:21:34,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701840924] [2022-04-05 05:21:34,564 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:21:34,565 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2022-04-05 05:21:34,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:21:34,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2022-04-05 05:21:34,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1861, Invalid=9481, Unknown=0, NotChecked=0, Total=11342 [2022-04-05 05:21:34,566 INFO L87 Difference]: Start difference. First operand 323 states and 333 transitions. Second operand has 107 states, 107 states have (on average 3.3551401869158877) internal successors, (359), 105 states have internal predecessors, (359), 69 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 05:21:38,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:21:38,604 INFO L93 Difference]: Finished difference Result 613 states and 726 transitions. [2022-04-05 05:21:38,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2022-04-05 05:21:38,607 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 3.3551401869158877) internal successors, (359), 105 states have internal predecessors, (359), 69 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 348 [2022-04-05 05:21:38,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:21:38,608 INFO L225 Difference]: With dead ends: 613 [2022-04-05 05:21:38,609 INFO L226 Difference]: Without dead ends: 470 [2022-04-05 05:21:38,612 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1006 GetRequests, 763 SyntacticMatches, 1 SemanticMatches, 242 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20491 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=9939, Invalid=49353, Unknown=0, NotChecked=0, Total=59292 [2022-04-05 05:21:38,613 INFO L913 BasicCegarLoop]: 111 mSDtfsCounter, 1100 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 3800 mSolverCounterSat, 923 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1101 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 4723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 923 IncrementalHoareTripleChecker+Valid, 3800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-04-05 05:21:38,613 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1101 Valid, 183 Invalid, 4723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [923 Valid, 3800 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-04-05 05:21:38,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2022-04-05 05:21:38,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 333. [2022-04-05 05:21:38,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 266 states have (on average 1.0150375939849625) internal successors, (270), 267 states have internal predecessors, (270), 37 states have call successors, (37), 30 states have call predecessors, (37), 29 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2022-04-05 05:21:38,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 343 transitions. [2022-04-05 05:21:38,633 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 343 transitions. Word has length 348 [2022-04-05 05:21:38,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:21:38,633 INFO L478 AbstractCegarLoop]: Abstraction has 333 states and 343 transitions. [2022-04-05 05:21:38,633 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 107 states have (on average 3.3551401869158877) internal successors, (359), 105 states have internal predecessors, (359), 69 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 05:21:38,633 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 343 transitions. [2022-04-05 05:21:38,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2022-04-05 05:21:38,634 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:21:38,634 INFO L499 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:21:38,652 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-04-05 05:21:38,847 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2022-04-05 05:21:38,847 INFO L403 AbstractCegarLoop]: === Iteration 43 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:21:38,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:21:38,848 INFO L85 PathProgramCache]: Analyzing trace with hash -2025393501, now seen corresponding path program 40 times [2022-04-05 05:21:38,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:21:38,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842341429] [2022-04-05 05:21:38,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:21:38,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:21:38,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:40,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:21:40,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:40,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-04-05 05:21:40,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:40,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-04-05 05:21:40,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:40,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-04-05 05:21:40,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:40,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-04-05 05:21:40,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:40,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-04-05 05:21:40,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:40,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-04-05 05:21:40,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:40,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-04-05 05:21:40,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:40,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-04-05 05:21:40,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:40,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-04-05 05:21:40,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:40,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-04-05 05:21:40,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:40,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-04-05 05:21:40,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:40,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-04-05 05:21:40,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:40,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-04-05 05:21:40,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:40,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-04-05 05:21:40,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:40,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-04-05 05:21:40,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:40,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-04-05 05:21:40,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:40,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-04-05 05:21:40,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:40,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-04-05 05:21:40,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:40,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-04-05 05:21:40,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:40,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-04-05 05:21:40,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:40,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-04-05 05:21:40,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:40,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-04-05 05:21:40,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:40,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-04-05 05:21:40,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:40,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-04-05 05:21:40,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:40,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-04-05 05:21:40,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:40,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-04-05 05:21:40,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:40,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-04-05 05:21:40,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:40,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-04-05 05:21:40,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:40,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-04-05 05:21:40,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:40,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-04-05 05:21:40,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:40,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-04-05 05:21:40,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:40,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-04-05 05:21:40,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:40,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-04-05 05:21:40,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:40,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-04-05 05:21:40,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:40,275 INFO L134 CoverageAnalysis]: Checked inductivity of 5814 backedges. 2281 proven. 1289 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2022-04-05 05:21:40,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:21:40,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842341429] [2022-04-05 05:21:40,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842341429] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:21:40,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978697606] [2022-04-05 05:21:40,275 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-05 05:21:40,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:21:40,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:21:40,276 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 05:21:40,278 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 05:21:40,393 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-05 05:21:40,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:21:40,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 986 conjuncts, 72 conjunts are in the unsatisfiable core [2022-04-05 05:21:40,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:21:41,981 INFO L134 CoverageAnalysis]: Checked inductivity of 5814 backedges. 1258 proven. 2312 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2022-04-05 05:21:41,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:21:42,525 INFO L134 CoverageAnalysis]: Checked inductivity of 5814 backedges. 1258 proven. 2312 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2022-04-05 05:21:42,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978697606] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:21:42,525 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:21:42,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 39, 39] total 110 [2022-04-05 05:21:42,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753528434] [2022-04-05 05:21:42,526 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:21:42,526 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 110 states [2022-04-05 05:21:42,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:21:42,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2022-04-05 05:21:42,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1968, Invalid=10022, Unknown=0, NotChecked=0, Total=11990 [2022-04-05 05:21:42,528 INFO L87 Difference]: Start difference. First operand 333 states and 343 transitions. Second operand has 110 states, 110 states have (on average 3.3545454545454545) internal successors, (369), 108 states have internal predecessors, (369), 71 states have call successors, (73), 4 states have call predecessors, (73), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2022-04-05 05:21:46,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:21:46,976 INFO L93 Difference]: Finished difference Result 631 states and 747 transitions. [2022-04-05 05:21:46,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2022-04-05 05:21:46,976 INFO L78 Accepts]: Start accepts. Automaton has has 110 states, 110 states have (on average 3.3545454545454545) internal successors, (369), 108 states have internal predecessors, (369), 71 states have call successors, (73), 4 states have call predecessors, (73), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) Word has length 358 [2022-04-05 05:21:46,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:21:46,978 INFO L225 Difference]: With dead ends: 631 [2022-04-05 05:21:46,978 INFO L226 Difference]: Without dead ends: 484 [2022-04-05 05:21:46,981 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1035 GetRequests, 785 SyntacticMatches, 1 SemanticMatches, 249 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21724 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=10511, Invalid=52239, Unknown=0, NotChecked=0, Total=62750 [2022-04-05 05:21:46,981 INFO L913 BasicCegarLoop]: 114 mSDtfsCounter, 1099 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 4054 mSolverCounterSat, 967 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1100 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 5021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 967 IncrementalHoareTripleChecker+Valid, 4054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-04-05 05:21:46,981 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1100 Valid, 196 Invalid, 5021 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [967 Valid, 4054 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-04-05 05:21:46,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2022-04-05 05:21:46,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 343. [2022-04-05 05:21:46,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 274 states have (on average 1.0145985401459854) internal successors, (278), 275 states have internal predecessors, (278), 38 states have call successors, (38), 31 states have call predecessors, (38), 30 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) [2022-04-05 05:21:47,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 353 transitions. [2022-04-05 05:21:47,000 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 353 transitions. Word has length 358 [2022-04-05 05:21:47,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:21:47,000 INFO L478 AbstractCegarLoop]: Abstraction has 343 states and 353 transitions. [2022-04-05 05:21:47,001 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 110 states, 110 states have (on average 3.3545454545454545) internal successors, (369), 108 states have internal predecessors, (369), 71 states have call successors, (73), 4 states have call predecessors, (73), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2022-04-05 05:21:47,001 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 353 transitions. [2022-04-05 05:21:47,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2022-04-05 05:21:47,002 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:21:47,002 INFO L499 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 35, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:21:47,020 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 05:21:47,220 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,SelfDestructingSolverStorable42 [2022-04-05 05:21:47,220 INFO L403 AbstractCegarLoop]: === Iteration 44 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:21:47,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:21:47,220 INFO L85 PathProgramCache]: Analyzing trace with hash 372111322, now seen corresponding path program 41 times [2022-04-05 05:21:47,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:21:47,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576634427] [2022-04-05 05:21:47,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:21:47,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:21:47,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:48,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:21:48,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:48,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-04-05 05:21:48,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:48,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-04-05 05:21:48,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:48,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-04-05 05:21:48,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:48,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-04-05 05:21:48,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:48,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-04-05 05:21:48,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:48,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-04-05 05:21:48,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:48,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-04-05 05:21:48,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:48,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-04-05 05:21:48,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:48,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-04-05 05:21:48,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:48,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-04-05 05:21:48,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:48,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-04-05 05:21:48,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:48,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-04-05 05:21:48,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:48,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-04-05 05:21:48,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:48,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-04-05 05:21:48,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:48,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-04-05 05:21:48,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:48,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-04-05 05:21:48,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:48,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-04-05 05:21:48,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:48,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-04-05 05:21:48,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:48,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-04-05 05:21:48,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:48,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-04-05 05:21:48,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:48,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-04-05 05:21:48,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:48,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-04-05 05:21:48,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:48,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-04-05 05:21:48,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:48,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-04-05 05:21:48,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:48,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-04-05 05:21:48,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:48,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-04-05 05:21:48,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:48,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-04-05 05:21:48,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:48,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-04-05 05:21:48,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:48,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-04-05 05:21:48,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:48,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-04-05 05:21:48,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:48,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-04-05 05:21:48,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:48,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-04-05 05:21:48,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:48,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-04-05 05:21:48,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:48,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-04-05 05:21:48,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:48,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-04-05 05:21:48,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:48,516 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 2418 proven. 1362 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2022-04-05 05:21:48,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:21:48,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576634427] [2022-04-05 05:21:48,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576634427] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:21:48,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489428124] [2022-04-05 05:21:48,517 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-05 05:21:48,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:21:48,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:21:48,518 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 05:21:48,519 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 05:21:48,682 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2022-04-05 05:21:48,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:21:48,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 1013 conjuncts, 74 conjunts are in the unsatisfiable core [2022-04-05 05:21:48,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:21:50,810 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 2520 proven. 1260 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2022-04-05 05:21:50,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:21:51,278 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 2520 proven. 1260 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2022-04-05 05:21:51,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489428124] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:21:51,278 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:21:51,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 74, 74] total 113 [2022-04-05 05:21:51,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149062774] [2022-04-05 05:21:51,279 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:21:51,279 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 113 states [2022-04-05 05:21:51,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:21:51,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2022-04-05 05:21:51,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2817, Invalid=9839, Unknown=0, NotChecked=0, Total=12656 [2022-04-05 05:21:51,281 INFO L87 Difference]: Start difference. First operand 343 states and 353 transitions. Second operand has 113 states, 113 states have (on average 2.6991150442477876) internal successors, (305), 112 states have internal predecessors, (305), 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 05:21:53,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:21:53,741 INFO L93 Difference]: Finished difference Result 640 states and 758 transitions. [2022-04-05 05:21:53,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-04-05 05:21:53,742 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 113 states have (on average 2.6991150442477876) internal successors, (305), 112 states have internal predecessors, (305), 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 368 [2022-04-05 05:21:53,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:21:53,743 INFO L225 Difference]: With dead ends: 640 [2022-04-05 05:21:53,743 INFO L226 Difference]: Without dead ends: 489 [2022-04-05 05:21:53,745 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 989 GetRequests, 806 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9270 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=7589, Invalid=26451, Unknown=0, NotChecked=0, Total=34040 [2022-04-05 05:21:53,745 INFO L913 BasicCegarLoop]: 84 mSDtfsCounter, 891 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 1758 mSolverCounterSat, 584 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 892 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 2342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 584 IncrementalHoareTripleChecker+Valid, 1758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-04-05 05:21:53,745 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [892 Valid, 111 Invalid, 2342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [584 Valid, 1758 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-05 05:21:53,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2022-04-05 05:21:53,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 345. [2022-04-05 05:21:53,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 276 states have (on average 1.0144927536231885) internal successors, (280), 277 states have internal predecessors, (280), 38 states have call successors, (38), 31 states have call predecessors, (38), 30 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) [2022-04-05 05:21:53,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 355 transitions. [2022-04-05 05:21:53,765 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 355 transitions. Word has length 368 [2022-04-05 05:21:53,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:21:53,765 INFO L478 AbstractCegarLoop]: Abstraction has 345 states and 355 transitions. [2022-04-05 05:21:53,765 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 113 states, 113 states have (on average 2.6991150442477876) internal successors, (305), 112 states have internal predecessors, (305), 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 05:21:53,765 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 355 transitions. [2022-04-05 05:21:53,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2022-04-05 05:21:53,767 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:21:53,767 INFO L499 BasicCegarLoop]: trace histogram [37, 36, 36, 36, 36, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:21:53,791 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 05:21:53,979 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:21:53,979 INFO L403 AbstractCegarLoop]: === Iteration 45 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:21:53,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:21:53,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1027431235, now seen corresponding path program 42 times [2022-04-05 05:21:53,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:21:53,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993893672] [2022-04-05 05:21:53,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:21:53,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:21:54,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:54,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:21:54,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:54,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-04-05 05:21:54,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:54,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-04-05 05:21:54,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:54,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-04-05 05:21:54,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:54,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-04-05 05:21:54,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:54,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-04-05 05:21:54,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:54,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-04-05 05:21:54,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:54,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-04-05 05:21:54,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:54,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-04-05 05:21:54,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:54,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-04-05 05:21:54,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:54,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-04-05 05:21:54,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:54,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-04-05 05:21:54,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:54,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-04-05 05:21:54,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:54,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-04-05 05:21:54,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:54,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-04-05 05:21:54,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:54,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-04-05 05:21:54,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:54,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-04-05 05:21:54,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:54,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-04-05 05:21:54,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:54,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-04-05 05:21:54,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:54,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-04-05 05:21:54,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:54,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-04-05 05:21:54,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:54,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-04-05 05:21:54,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:54,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-04-05 05:21:54,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:54,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-04-05 05:21:54,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:54,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-04-05 05:21:54,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:54,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-04-05 05:21:54,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:54,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-04-05 05:21:54,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:54,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-04-05 05:21:54,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:54,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-04-05 05:21:54,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:54,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-04-05 05:21:54,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:54,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-04-05 05:21:54,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:54,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-04-05 05:21:54,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:54,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-04-05 05:21:54,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:54,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-04-05 05:21:54,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:54,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-04-05 05:21:54,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:54,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-04-05 05:21:54,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:54,557 INFO L134 CoverageAnalysis]: Checked inductivity of 6232 backedges. 1330 proven. 2522 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2022-04-05 05:21:54,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:21:54,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993893672] [2022-04-05 05:21:54,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993893672] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:21:54,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508911956] [2022-04-05 05:21:54,558 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-05 05:21:54,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:21:54,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:21:54,559 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 05:21:54,560 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 05:21:54,714 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2022-04-05 05:21:54,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:21:54,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 1023 conjuncts, 75 conjunts are in the unsatisfiable core [2022-04-05 05:21:54,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:21:55,230 INFO L134 CoverageAnalysis]: Checked inductivity of 6232 backedges. 1402 proven. 2450 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2022-04-05 05:21:55,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:21:55,715 INFO L134 CoverageAnalysis]: Checked inductivity of 6232 backedges. 1402 proven. 2450 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2022-04-05 05:21:55,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508911956] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:21:55,715 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:21:55,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 41, 41] total 46 [2022-04-05 05:21:55,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395185360] [2022-04-05 05:21:55,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:21:55,716 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-04-05 05:21:55,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:21:55,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-04-05 05:21:55,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=796, Invalid=1274, Unknown=0, NotChecked=0, Total=2070 [2022-04-05 05:21:55,717 INFO L87 Difference]: Start difference. First operand 345 states and 355 transitions. Second operand has 46 states, 46 states have (on average 4.695652173913044) internal successors, (216), 43 states have internal predecessors, (216), 38 states have call successors, (42), 4 states have call predecessors, (42), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-04-05 05:21:56,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:21:56,642 INFO L93 Difference]: Finished difference Result 364 states and 376 transitions. [2022-04-05 05:21:56,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-04-05 05:21:56,643 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 4.695652173913044) internal successors, (216), 43 states have internal predecessors, (216), 38 states have call successors, (42), 4 states have call predecessors, (42), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Word has length 370 [2022-04-05 05:21:56,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:21:56,644 INFO L225 Difference]: With dead ends: 364 [2022-04-05 05:21:56,644 INFO L226 Difference]: Without dead ends: 362 [2022-04-05 05:21:56,644 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 930 GetRequests, 843 SyntacticMatches, 1 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1542 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=2380, Invalid=5276, Unknown=0, NotChecked=0, Total=7656 [2022-04-05 05:21:56,644 INFO L913 BasicCegarLoop]: 57 mSDtfsCounter, 190 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1170 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 1367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 1170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-05 05:21:56,645 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 104 Invalid, 1367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 1170 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-05 05:21:56,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2022-04-05 05:21:56,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 357. [2022-04-05 05:21:56,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 285 states have (on average 1.0140350877192983) internal successors, (289), 286 states have internal predecessors, (289), 40 states have call successors, (40), 32 states have call predecessors, (40), 31 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2022-04-05 05:21:56,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 368 transitions. [2022-04-05 05:21:56,664 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 368 transitions. Word has length 370 [2022-04-05 05:21:56,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:21:56,664 INFO L478 AbstractCegarLoop]: Abstraction has 357 states and 368 transitions. [2022-04-05 05:21:56,664 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 4.695652173913044) internal successors, (216), 43 states have internal predecessors, (216), 38 states have call successors, (42), 4 states have call predecessors, (42), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-04-05 05:21:56,664 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 368 transitions. [2022-04-05 05:21:56,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2022-04-05 05:21:56,666 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:21:56,666 INFO L499 BasicCegarLoop]: trace histogram [38, 38, 38, 37, 37, 37, 37, 37, 37, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:21:56,685 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 05:21:56,883 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:21:56,883 INFO L403 AbstractCegarLoop]: === Iteration 46 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:21:56,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:21:56,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1645128731, now seen corresponding path program 43 times [2022-04-05 05:21:56,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:21:56,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556063026] [2022-04-05 05:21:56,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:21:56,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:21:56,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:58,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:21:58,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:58,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-04-05 05:21:58,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:58,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-04-05 05:21:58,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:58,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-04-05 05:21:58,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:58,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-04-05 05:21:58,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:58,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-04-05 05:21:58,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:58,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-04-05 05:21:58,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:58,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-04-05 05:21:58,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:58,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-04-05 05:21:58,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:58,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-04-05 05:21:58,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:58,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-04-05 05:21:58,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:58,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-04-05 05:21:58,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:58,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-04-05 05:21:58,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:58,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-04-05 05:21:58,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:58,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-04-05 05:21:58,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:58,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-04-05 05:21:58,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:58,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-04-05 05:21:58,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:58,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-04-05 05:21:58,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:58,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-04-05 05:21:58,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:58,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-04-05 05:21:58,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:58,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-04-05 05:21:58,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:58,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-04-05 05:21:58,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:58,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-04-05 05:21:58,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:58,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-04-05 05:21:58,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:58,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-04-05 05:21:58,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:58,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-04-05 05:21:58,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:58,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-04-05 05:21:58,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:58,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-04-05 05:21:58,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:58,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-04-05 05:21:58,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:58,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-04-05 05:21:58,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:58,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-04-05 05:21:58,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:58,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-04-05 05:21:58,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:58,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-04-05 05:21:58,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:58,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-04-05 05:21:58,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:58,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-04-05 05:21:58,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:58,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-04-05 05:21:58,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:58,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-04-05 05:21:58,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:58,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-04-05 05:21:58,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:58,281 INFO L134 CoverageAnalysis]: Checked inductivity of 6808 backedges. 2704 proven. 1440 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2022-04-05 05:21:58,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:21:58,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556063026] [2022-04-05 05:21:58,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556063026] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:21:58,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278537474] [2022-04-05 05:21:58,281 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-05 05:21:58,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:21:58,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:21:58,282 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 05:21:58,284 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 05:21:58,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:21:58,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 1057 conjuncts, 76 conjunts are in the unsatisfiable core [2022-04-05 05:21:58,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:22:00,542 INFO L134 CoverageAnalysis]: Checked inductivity of 6808 backedges. 2952 proven. 1332 refuted. 0 times theorem prover too weak. 2524 trivial. 0 not checked. [2022-04-05 05:22:00,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:22:01,045 INFO L134 CoverageAnalysis]: Checked inductivity of 6808 backedges. 2810 proven. 1332 refuted. 0 times theorem prover too weak. 2666 trivial. 0 not checked. [2022-04-05 05:22:01,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [278537474] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:22:01,046 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:22:01,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 76, 76] total 117 [2022-04-05 05:22:01,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060223057] [2022-04-05 05:22:01,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:22:01,046 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 117 states [2022-04-05 05:22:01,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:22:01,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2022-04-05 05:22:01,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3008, Invalid=10564, Unknown=0, NotChecked=0, Total=13572 [2022-04-05 05:22:01,048 INFO L87 Difference]: Start difference. First operand 357 states and 368 transitions. Second operand has 117 states, 117 states have (on average 2.7435897435897436) internal successors, (321), 116 states have internal predecessors, (321), 76 states have call successors, (79), 3 states have call predecessors, (79), 2 states have return successors, (77), 76 states have call predecessors, (77), 76 states have call successors, (77) [2022-04-05 05:22:03,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:22:03,600 INFO L93 Difference]: Finished difference Result 668 states and 790 transitions. [2022-04-05 05:22:03,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-04-05 05:22:03,601 INFO L78 Accepts]: Start accepts. Automaton has has 117 states, 117 states have (on average 2.7435897435897436) internal successors, (321), 116 states have internal predecessors, (321), 76 states have call successors, (79), 3 states have call predecessors, (79), 2 states have return successors, (77), 76 states have call predecessors, (77), 76 states have call successors, (77) Word has length 386 [2022-04-05 05:22:03,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:22:03,602 INFO L225 Difference]: With dead ends: 668 [2022-04-05 05:22:03,602 INFO L226 Difference]: Without dead ends: 507 [2022-04-05 05:22:03,604 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1035 GetRequests, 846 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9936 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=8042, Invalid=28248, Unknown=0, NotChecked=0, Total=36290 [2022-04-05 05:22:03,605 INFO L913 BasicCegarLoop]: 86 mSDtfsCounter, 709 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 2576 mSolverCounterSat, 462 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 710 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 3038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 462 IncrementalHoareTripleChecker+Valid, 2576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-05 05:22:03,605 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [710 Valid, 148 Invalid, 3038 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [462 Valid, 2576 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-05 05:22:03,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2022-04-05 05:22:03,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 359. [2022-04-05 05:22:03,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 287 states have (on average 1.0139372822299653) internal successors, (291), 288 states have internal predecessors, (291), 40 states have call successors, (40), 32 states have call predecessors, (40), 31 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2022-04-05 05:22:03,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 370 transitions. [2022-04-05 05:22:03,625 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 370 transitions. Word has length 386 [2022-04-05 05:22:03,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:22:03,625 INFO L478 AbstractCegarLoop]: Abstraction has 359 states and 370 transitions. [2022-04-05 05:22:03,625 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 117 states, 117 states have (on average 2.7435897435897436) internal successors, (321), 116 states have internal predecessors, (321), 76 states have call successors, (79), 3 states have call predecessors, (79), 2 states have return successors, (77), 76 states have call predecessors, (77), 76 states have call successors, (77) [2022-04-05 05:22:03,625 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 370 transitions. [2022-04-05 05:22:03,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2022-04-05 05:22:03,627 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:22:03,627 INFO L499 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 37, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:22:03,648 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2022-04-05 05:22:03,842 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,SelfDestructingSolverStorable45 [2022-04-05 05:22:03,842 INFO L403 AbstractCegarLoop]: === Iteration 47 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:22:03,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:22:03,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1522029048, now seen corresponding path program 44 times [2022-04-05 05:22:03,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:22:03,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897849152] [2022-04-05 05:22:03,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:22:03,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:22:03,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:05,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:22:05,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:05,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-04-05 05:22:05,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:05,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-04-05 05:22:05,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:05,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-04-05 05:22:05,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:05,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-04-05 05:22:05,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:05,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-04-05 05:22:05,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:05,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-04-05 05:22:05,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:05,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-04-05 05:22:05,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:05,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-04-05 05:22:05,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:05,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-04-05 05:22:05,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:05,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-04-05 05:22:05,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:05,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-04-05 05:22:05,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:05,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-04-05 05:22:05,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:05,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-04-05 05:22:05,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:05,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-04-05 05:22:05,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:05,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-04-05 05:22:05,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:05,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-04-05 05:22:05,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:05,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-04-05 05:22:05,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:05,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-04-05 05:22:05,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:05,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-04-05 05:22:05,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:05,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-04-05 05:22:05,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:05,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-04-05 05:22:05,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:05,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-04-05 05:22:05,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:05,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-04-05 05:22:05,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:05,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-04-05 05:22:05,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:05,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-04-05 05:22:05,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:05,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-04-05 05:22:05,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:05,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-04-05 05:22:05,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:05,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-04-05 05:22:05,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:05,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-04-05 05:22:05,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:05,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-04-05 05:22:05,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:05,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-04-05 05:22:05,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:05,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-04-05 05:22:05,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:05,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-04-05 05:22:05,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:05,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-04-05 05:22:05,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:05,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-04-05 05:22:05,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:05,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-04-05 05:22:05,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:05,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-04-05 05:22:05,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:05,262 INFO L134 CoverageAnalysis]: Checked inductivity of 6882 backedges. 2704 proven. 1514 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2022-04-05 05:22:05,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:22:05,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897849152] [2022-04-05 05:22:05,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897849152] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:22:05,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610558399] [2022-04-05 05:22:05,263 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 05:22:05,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:22:05,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:22:05,264 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 05:22:05,264 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 05:22:05,374 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 05:22:05,374 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:22:05,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 1067 conjuncts, 78 conjunts are in the unsatisfiable core [2022-04-05 05:22:05,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:22:07,138 INFO L134 CoverageAnalysis]: Checked inductivity of 6882 backedges. 1480 proven. 2738 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2022-04-05 05:22:07,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:22:07,641 INFO L134 CoverageAnalysis]: Checked inductivity of 6882 backedges. 1480 proven. 2738 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2022-04-05 05:22:07,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610558399] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:22:07,641 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:22:07,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 42, 42] total 119 [2022-04-05 05:22:07,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239865403] [2022-04-05 05:22:07,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:22:07,642 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 119 states [2022-04-05 05:22:07,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:22:07,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2022-04-05 05:22:07,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2307, Invalid=11735, Unknown=0, NotChecked=0, Total=14042 [2022-04-05 05:22:07,647 INFO L87 Difference]: Start difference. First operand 359 states and 370 transitions. Second operand has 119 states, 119 states have (on average 3.3529411764705883) internal successors, (399), 117 states have internal predecessors, (399), 77 states have call successors, (79), 4 states have call predecessors, (79), 1 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2022-04-05 05:22:12,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:22:12,721 INFO L93 Difference]: Finished difference Result 681 states and 807 transitions. [2022-04-05 05:22:12,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2022-04-05 05:22:12,727 INFO L78 Accepts]: Start accepts. Automaton has has 119 states, 119 states have (on average 3.3529411764705883) internal successors, (399), 117 states have internal predecessors, (399), 77 states have call successors, (79), 4 states have call predecessors, (79), 1 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) Word has length 388 [2022-04-05 05:22:12,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:22:12,729 INFO L225 Difference]: With dead ends: 681 [2022-04-05 05:22:12,729 INFO L226 Difference]: Without dead ends: 522 [2022-04-05 05:22:12,734 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1122 GetRequests, 851 SyntacticMatches, 1 SemanticMatches, 270 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25639 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=12323, Invalid=61389, Unknown=0, NotChecked=0, Total=73712 [2022-04-05 05:22:12,734 INFO L913 BasicCegarLoop]: 123 mSDtfsCounter, 1276 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 4445 mSolverCounterSat, 1093 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1277 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 5538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1093 IncrementalHoareTripleChecker+Valid, 4445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-04-05 05:22:12,734 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1277 Valid, 205 Invalid, 5538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1093 Valid, 4445 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-04-05 05:22:12,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2022-04-05 05:22:12,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 369. [2022-04-05 05:22:12,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 295 states have (on average 1.0135593220338983) internal successors, (299), 296 states have internal predecessors, (299), 41 states have call successors, (41), 33 states have call predecessors, (41), 32 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2022-04-05 05:22:12,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 380 transitions. [2022-04-05 05:22:12,769 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 380 transitions. Word has length 388 [2022-04-05 05:22:12,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:22:12,770 INFO L478 AbstractCegarLoop]: Abstraction has 369 states and 380 transitions. [2022-04-05 05:22:12,770 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 119 states, 119 states have (on average 3.3529411764705883) internal successors, (399), 117 states have internal predecessors, (399), 77 states have call successors, (79), 4 states have call predecessors, (79), 1 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2022-04-05 05:22:12,770 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 380 transitions. [2022-04-05 05:22:12,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2022-04-05 05:22:12,772 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:22:12,772 INFO L499 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 38, 38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:22:12,791 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 05:22:12,975 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,SelfDestructingSolverStorable46 [2022-04-05 05:22:12,975 INFO L403 AbstractCegarLoop]: === Iteration 48 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:22:12,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:22:12,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1213907201, now seen corresponding path program 45 times [2022-04-05 05:22:12,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:22:12,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737224345] [2022-04-05 05:22:12,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:22:12,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:22:13,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:14,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:22:14,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:14,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-04-05 05:22:14,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:14,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-04-05 05:22:14,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:14,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-04-05 05:22:14,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:14,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-04-05 05:22:14,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:14,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-04-05 05:22:14,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:14,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-04-05 05:22:14,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:14,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-04-05 05:22:14,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:14,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-04-05 05:22:14,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:14,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-04-05 05:22:14,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:14,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-04-05 05:22:14,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:14,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-04-05 05:22:14,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:14,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-04-05 05:22:14,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:14,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-04-05 05:22:14,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:14,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-04-05 05:22:14,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:14,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-04-05 05:22:14,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:14,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-04-05 05:22:14,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:14,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-04-05 05:22:14,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:14,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-04-05 05:22:14,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:14,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-04-05 05:22:14,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:14,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-04-05 05:22:14,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:14,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-04-05 05:22:14,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:14,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-04-05 05:22:14,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:14,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-04-05 05:22:14,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:14,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-04-05 05:22:14,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:14,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-04-05 05:22:14,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:14,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-04-05 05:22:14,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:14,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-04-05 05:22:14,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:14,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-04-05 05:22:14,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:14,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-04-05 05:22:14,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:14,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-04-05 05:22:14,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:14,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-04-05 05:22:14,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:14,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-04-05 05:22:14,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:14,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-04-05 05:22:14,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:14,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-04-05 05:22:14,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:14,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-04-05 05:22:14,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:14,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-04-05 05:22:14,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:14,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-04-05 05:22:14,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:14,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-04-05 05:22:14,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:14,537 INFO L134 CoverageAnalysis]: Checked inductivity of 7258 backedges. 2853 proven. 1593 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2022-04-05 05:22:14,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:22:14,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737224345] [2022-04-05 05:22:14,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737224345] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:22:14,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420365946] [2022-04-05 05:22:14,537 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-05 05:22:14,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:22:14,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:22:14,545 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 05:22:14,546 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 05:22:14,718 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 39 check-sat command(s) [2022-04-05 05:22:14,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:22:14,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 1094 conjuncts, 80 conjunts are in the unsatisfiable core [2022-04-05 05:22:14,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:22:16,646 INFO L134 CoverageAnalysis]: Checked inductivity of 7258 backedges. 1558 proven. 2888 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2022-04-05 05:22:16,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:22:17,214 INFO L134 CoverageAnalysis]: Checked inductivity of 7258 backedges. 1558 proven. 2888 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2022-04-05 05:22:17,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420365946] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:22:17,215 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:22:17,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 43, 43] total 122 [2022-04-05 05:22:17,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483326766] [2022-04-05 05:22:17,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:22:17,216 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 122 states [2022-04-05 05:22:17,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:22:17,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2022-04-05 05:22:17,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2426, Invalid=12336, Unknown=0, NotChecked=0, Total=14762 [2022-04-05 05:22:17,217 INFO L87 Difference]: Start difference. First operand 369 states and 380 transitions. Second operand has 122 states, 122 states have (on average 3.3524590163934427) internal successors, (409), 120 states have internal predecessors, (409), 79 states have call successors, (81), 4 states have call predecessors, (81), 1 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) [2022-04-05 05:22:22,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:22:22,514 INFO L93 Difference]: Finished difference Result 699 states and 828 transitions. [2022-04-05 05:22:22,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2022-04-05 05:22:22,515 INFO L78 Accepts]: Start accepts. Automaton has has 122 states, 122 states have (on average 3.3524590163934427) internal successors, (409), 120 states have internal predecessors, (409), 79 states have call successors, (81), 4 states have call predecessors, (81), 1 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) Word has length 398 [2022-04-05 05:22:22,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:22:22,517 INFO L225 Difference]: With dead ends: 699 [2022-04-05 05:22:22,517 INFO L226 Difference]: Without dead ends: 536 [2022-04-05 05:22:22,522 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1151 GetRequests, 873 SyntacticMatches, 1 SemanticMatches, 277 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27016 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=12959, Invalid=64603, Unknown=0, NotChecked=0, Total=77562 [2022-04-05 05:22:22,522 INFO L913 BasicCegarLoop]: 126 mSDtfsCounter, 1057 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 4994 mSolverCounterSat, 957 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1058 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 5951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 957 IncrementalHoareTripleChecker+Valid, 4994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-04-05 05:22:22,522 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1058 Valid, 213 Invalid, 5951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [957 Valid, 4994 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-04-05 05:22:22,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2022-04-05 05:22:22,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 379. [2022-04-05 05:22:22,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 303 states have (on average 1.0132013201320131) internal successors, (307), 304 states have internal predecessors, (307), 42 states have call successors, (42), 34 states have call predecessors, (42), 33 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) [2022-04-05 05:22:22,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 390 transitions. [2022-04-05 05:22:22,557 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 390 transitions. Word has length 398 [2022-04-05 05:22:22,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:22:22,557 INFO L478 AbstractCegarLoop]: Abstraction has 379 states and 390 transitions. [2022-04-05 05:22:22,557 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 122 states, 122 states have (on average 3.3524590163934427) internal successors, (409), 120 states have internal predecessors, (409), 79 states have call successors, (81), 4 states have call predecessors, (81), 1 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) [2022-04-05 05:22:22,557 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 390 transitions. [2022-04-05 05:22:22,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2022-04-05 05:22:22,559 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:22:22,560 INFO L499 BasicCegarLoop]: trace histogram [40, 40, 40, 40, 39, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:22:22,601 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 05:22:22,775 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,SelfDestructingSolverStorable47 [2022-04-05 05:22:22,776 INFO L403 AbstractCegarLoop]: === Iteration 49 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:22:22,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:22:22,776 INFO L85 PathProgramCache]: Analyzing trace with hash 320244022, now seen corresponding path program 46 times [2022-04-05 05:22:22,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:22:22,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011533669] [2022-04-05 05:22:22,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:22:22,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:22:22,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:24,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:22:24,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:24,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-04-05 05:22:24,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:24,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-04-05 05:22:24,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:24,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-04-05 05:22:24,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:24,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-04-05 05:22:24,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:24,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-04-05 05:22:24,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:24,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-04-05 05:22:24,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:24,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-04-05 05:22:24,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:24,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-04-05 05:22:24,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:24,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-04-05 05:22:24,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:24,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-04-05 05:22:24,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:24,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-04-05 05:22:24,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:24,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-04-05 05:22:24,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:24,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-04-05 05:22:24,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:24,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-04-05 05:22:24,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:24,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-04-05 05:22:24,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:24,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-04-05 05:22:24,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:24,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-04-05 05:22:24,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:24,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-04-05 05:22:24,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:24,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-04-05 05:22:24,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:24,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-04-05 05:22:24,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:24,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-04-05 05:22:24,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:24,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-04-05 05:22:24,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:24,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-04-05 05:22:24,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:24,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-04-05 05:22:24,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:24,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-04-05 05:22:24,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:24,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-04-05 05:22:24,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:24,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-04-05 05:22:24,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:24,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-04-05 05:22:24,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:24,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-04-05 05:22:24,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:24,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-04-05 05:22:24,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:24,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-04-05 05:22:24,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:24,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-04-05 05:22:24,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:24,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-04-05 05:22:24,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:24,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-04-05 05:22:24,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:24,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-04-05 05:22:24,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:24,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-04-05 05:22:24,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:24,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-04-05 05:22:24,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:24,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-04-05 05:22:24,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:24,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-04-05 05:22:24,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:24,500 INFO L134 CoverageAnalysis]: Checked inductivity of 7644 backedges. 3006 proven. 1674 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2022-04-05 05:22:24,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:22:24,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011533669] [2022-04-05 05:22:24,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011533669] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:22:24,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478702218] [2022-04-05 05:22:24,500 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-05 05:22:24,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:22:24,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:22:24,501 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 05:22:24,504 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 05:22:24,646 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-05 05:22:24,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:22:24,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 1121 conjuncts, 82 conjunts are in the unsatisfiable core [2022-04-05 05:22:24,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:22:26,629 INFO L134 CoverageAnalysis]: Checked inductivity of 7644 backedges. 1638 proven. 3042 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2022-04-05 05:22:26,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:22:27,210 INFO L134 CoverageAnalysis]: Checked inductivity of 7644 backedges. 1638 proven. 3042 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2022-04-05 05:22:27,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478702218] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:22:27,210 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:22:27,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 44, 44] total 125 [2022-04-05 05:22:27,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776576157] [2022-04-05 05:22:27,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:22:27,211 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 125 states [2022-04-05 05:22:27,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:22:27,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2022-04-05 05:22:27,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2548, Invalid=12952, Unknown=0, NotChecked=0, Total=15500 [2022-04-05 05:22:27,212 INFO L87 Difference]: Start difference. First operand 379 states and 390 transitions. Second operand has 125 states, 125 states have (on average 3.352) internal successors, (419), 123 states have internal predecessors, (419), 81 states have call successors, (83), 4 states have call predecessors, (83), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) [2022-04-05 05:22:32,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:22:32,512 INFO L93 Difference]: Finished difference Result 717 states and 849 transitions. [2022-04-05 05:22:32,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2022-04-05 05:22:32,513 INFO L78 Accepts]: Start accepts. Automaton has has 125 states, 125 states have (on average 3.352) internal successors, (419), 123 states have internal predecessors, (419), 81 states have call successors, (83), 4 states have call predecessors, (83), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) Word has length 408 [2022-04-05 05:22:32,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:22:32,514 INFO L225 Difference]: With dead ends: 717 [2022-04-05 05:22:32,514 INFO L226 Difference]: Without dead ends: 550 [2022-04-05 05:22:32,519 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1180 GetRequests, 895 SyntacticMatches, 1 SemanticMatches, 284 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28429 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=13611, Invalid=67899, Unknown=0, NotChecked=0, Total=81510 [2022-04-05 05:22:32,520 INFO L913 BasicCegarLoop]: 129 mSDtfsCounter, 1232 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 4335 mSolverCounterSat, 1052 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1233 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 5387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1052 IncrementalHoareTripleChecker+Valid, 4335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-04-05 05:22:32,520 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1233 Valid, 196 Invalid, 5387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1052 Valid, 4335 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-04-05 05:22:32,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2022-04-05 05:22:32,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 389. [2022-04-05 05:22:32,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 311 states have (on average 1.0128617363344052) internal successors, (315), 312 states have internal predecessors, (315), 43 states have call successors, (43), 35 states have call predecessors, (43), 34 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2022-04-05 05:22:32,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 400 transitions. [2022-04-05 05:22:32,543 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 400 transitions. Word has length 408 [2022-04-05 05:22:32,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:22:32,543 INFO L478 AbstractCegarLoop]: Abstraction has 389 states and 400 transitions. [2022-04-05 05:22:32,543 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 125 states, 125 states have (on average 3.352) internal successors, (419), 123 states have internal predecessors, (419), 81 states have call successors, (83), 4 states have call predecessors, (83), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) [2022-04-05 05:22:32,543 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 400 transitions. [2022-04-05 05:22:32,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2022-04-05 05:22:32,545 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:22:32,545 INFO L499 BasicCegarLoop]: trace histogram [41, 41, 41, 41, 40, 40, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:22:32,565 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 05:22:32,759 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:22:32,759 INFO L403 AbstractCegarLoop]: === Iteration 50 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:22:32,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:22:32,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1339227309, now seen corresponding path program 47 times [2022-04-05 05:22:32,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:22:32,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757380124] [2022-04-05 05:22:32,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:22:32,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:22:32,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:34,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:22:34,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:34,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-04-05 05:22:34,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:34,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-04-05 05:22:34,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:34,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-04-05 05:22:34,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:34,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-04-05 05:22:34,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:34,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-04-05 05:22:34,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:34,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-04-05 05:22:34,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:34,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-04-05 05:22:34,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:34,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-04-05 05:22:34,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:34,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-04-05 05:22:34,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:34,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-04-05 05:22:34,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:34,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-04-05 05:22:34,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:34,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-04-05 05:22:34,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:34,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-04-05 05:22:34,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:34,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-04-05 05:22:34,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:34,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-04-05 05:22:34,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:34,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-04-05 05:22:34,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:34,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-04-05 05:22:34,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:34,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-04-05 05:22:34,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:34,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-04-05 05:22:34,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:34,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-04-05 05:22:34,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:34,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-04-05 05:22:34,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:34,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-04-05 05:22:34,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:34,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-04-05 05:22:34,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:34,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-04-05 05:22:34,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:34,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-04-05 05:22:34,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:34,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-04-05 05:22:34,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:34,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-04-05 05:22:34,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:34,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-04-05 05:22:34,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:34,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-04-05 05:22:34,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:34,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-04-05 05:22:34,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:34,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-04-05 05:22:34,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:34,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-04-05 05:22:34,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:34,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-04-05 05:22:34,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:34,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-04-05 05:22:34,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:34,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-04-05 05:22:34,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:34,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-04-05 05:22:34,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:34,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-04-05 05:22:34,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:34,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-04-05 05:22:34,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:34,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-04-05 05:22:34,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:34,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-04-05 05:22:34,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:34,580 INFO L134 CoverageAnalysis]: Checked inductivity of 8040 backedges. 3163 proven. 1757 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2022-04-05 05:22:34,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:22:34,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757380124] [2022-04-05 05:22:34,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757380124] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:22:34,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983121046] [2022-04-05 05:22:34,581 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-05 05:22:34,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:22:34,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:22:34,596 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 05:22:34,631 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 05:22:34,805 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 41 check-sat command(s) [2022-04-05 05:22:34,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:22:34,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 1148 conjuncts, 84 conjunts are in the unsatisfiable core [2022-04-05 05:22:34,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:22:37,471 INFO L134 CoverageAnalysis]: Checked inductivity of 8040 backedges. 3280 proven. 1640 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2022-04-05 05:22:37,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:22:38,105 INFO L134 CoverageAnalysis]: Checked inductivity of 8040 backedges. 3280 proven. 1640 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2022-04-05 05:22:38,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983121046] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:22:38,105 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:22:38,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 84, 84] total 128 [2022-04-05 05:22:38,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166412958] [2022-04-05 05:22:38,105 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:22:38,106 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2022-04-05 05:22:38,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:22:38,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2022-04-05 05:22:38,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3617, Invalid=12639, Unknown=0, NotChecked=0, Total=16256 [2022-04-05 05:22:38,108 INFO L87 Difference]: Start difference. First operand 389 states and 400 transitions. Second operand has 128 states, 128 states have (on average 2.6953125) internal successors, (345), 127 states have internal predecessors, (345), 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 05:22:41,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:22:41,085 INFO L93 Difference]: Finished difference Result 726 states and 860 transitions. [2022-04-05 05:22:41,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-04-05 05:22:41,085 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 128 states have (on average 2.6953125) internal successors, (345), 127 states have internal predecessors, (345), 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 418 [2022-04-05 05:22:41,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:22:41,087 INFO L225 Difference]: With dead ends: 726 [2022-04-05 05:22:41,087 INFO L226 Difference]: Without dead ends: 555 [2022-04-05 05:22:41,090 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1124 GetRequests, 916 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11995 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=9769, Invalid=34121, Unknown=0, NotChecked=0, Total=43890 [2022-04-05 05:22:41,090 INFO L913 BasicCegarLoop]: 94 mSDtfsCounter, 880 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 2559 mSolverCounterSat, 598 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 3157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 598 IncrementalHoareTripleChecker+Valid, 2559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-04-05 05:22:41,091 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [881 Valid, 151 Invalid, 3157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [598 Valid, 2559 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-04-05 05:22:41,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2022-04-05 05:22:41,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 391. [2022-04-05 05:22:41,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 313 states have (on average 1.012779552715655) internal successors, (317), 314 states have internal predecessors, (317), 43 states have call successors, (43), 35 states have call predecessors, (43), 34 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2022-04-05 05:22:41,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 402 transitions. [2022-04-05 05:22:41,114 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 402 transitions. Word has length 418 [2022-04-05 05:22:41,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:22:41,115 INFO L478 AbstractCegarLoop]: Abstraction has 391 states and 402 transitions. [2022-04-05 05:22:41,115 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 128 states have (on average 2.6953125) internal successors, (345), 127 states have internal predecessors, (345), 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 05:22:41,115 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 402 transitions. [2022-04-05 05:22:41,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2022-04-05 05:22:41,116 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:22:41,117 INFO L499 BasicCegarLoop]: trace histogram [42, 41, 41, 41, 41, 40, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:22:41,135 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 05:22:41,329 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,SelfDestructingSolverStorable49 [2022-04-05 05:22:41,330 INFO L403 AbstractCegarLoop]: === Iteration 51 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:22:41,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:22:41,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1950348592, now seen corresponding path program 48 times [2022-04-05 05:22:41,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:22:41,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474430710] [2022-04-05 05:22:41,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:22:41,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:22:41,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:42,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:22:42,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:42,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-04-05 05:22:42,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:42,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-04-05 05:22:42,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:42,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-04-05 05:22:42,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:42,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-04-05 05:22:42,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:42,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-04-05 05:22:42,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:42,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-04-05 05:22:42,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:42,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-04-05 05:22:42,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:42,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-04-05 05:22:42,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:42,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-04-05 05:22:42,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:42,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-04-05 05:22:42,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:42,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-04-05 05:22:42,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:42,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-04-05 05:22:42,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:42,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-04-05 05:22:42,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:42,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-04-05 05:22:42,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:42,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-04-05 05:22:42,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:42,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-04-05 05:22:42,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:42,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-04-05 05:22:42,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:42,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-04-05 05:22:42,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:42,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-04-05 05:22:42,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:42,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-04-05 05:22:42,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:42,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-04-05 05:22:42,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:42,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-04-05 05:22:42,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:42,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-04-05 05:22:42,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:42,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-04-05 05:22:42,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:42,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-04-05 05:22:42,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:42,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-04-05 05:22:42,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:42,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-04-05 05:22:42,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:42,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-04-05 05:22:42,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:42,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-04-05 05:22:42,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:42,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-04-05 05:22:42,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:42,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-04-05 05:22:42,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:42,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-04-05 05:22:42,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:42,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-04-05 05:22:42,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:42,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-04-05 05:22:42,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:42,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-04-05 05:22:42,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:42,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-04-05 05:22:42,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:42,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-04-05 05:22:42,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:42,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-04-05 05:22:42,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:42,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-04-05 05:22:42,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:42,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-04-05 05:22:42,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:42,082 INFO L134 CoverageAnalysis]: Checked inductivity of 8122 backedges. 1720 proven. 3282 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2022-04-05 05:22:42,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:22:42,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474430710] [2022-04-05 05:22:42,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474430710] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:22:42,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632657349] [2022-04-05 05:22:42,082 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-05 05:22:42,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:22:42,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:22:42,083 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 05:22:42,084 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 05:22:42,273 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 42 check-sat command(s) [2022-04-05 05:22:42,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:22:42,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 1158 conjuncts, 85 conjunts are in the unsatisfiable core [2022-04-05 05:22:42,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:22:42,794 INFO L134 CoverageAnalysis]: Checked inductivity of 8122 backedges. 1802 proven. 3200 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2022-04-05 05:22:42,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:22:43,332 INFO L134 CoverageAnalysis]: Checked inductivity of 8122 backedges. 1802 proven. 3200 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2022-04-05 05:22:43,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632657349] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:22:43,333 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:22:43,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 46, 46] total 51 [2022-04-05 05:22:43,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884615471] [2022-04-05 05:22:43,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:22:43,333 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-04-05 05:22:43,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:22:43,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-04-05 05:22:43,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1006, Invalid=1544, Unknown=0, NotChecked=0, Total=2550 [2022-04-05 05:22:43,334 INFO L87 Difference]: Start difference. First operand 391 states and 402 transitions. Second operand has 51 states, 51 states have (on average 4.7254901960784315) internal successors, (241), 48 states have internal predecessors, (241), 43 states have call successors, (47), 4 states have call predecessors, (47), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-04-05 05:22:44,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:22:44,363 INFO L93 Difference]: Finished difference Result 410 states and 423 transitions. [2022-04-05 05:22:44,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-04-05 05:22:44,363 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 4.7254901960784315) internal successors, (241), 48 states have internal predecessors, (241), 43 states have call successors, (47), 4 states have call predecessors, (47), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Word has length 420 [2022-04-05 05:22:44,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:22:44,365 INFO L225 Difference]: With dead ends: 410 [2022-04-05 05:22:44,365 INFO L226 Difference]: Without dead ends: 408 [2022-04-05 05:22:44,366 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1055 GetRequests, 958 SyntacticMatches, 1 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1857 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=3010, Invalid=6496, Unknown=0, NotChecked=0, Total=9506 [2022-04-05 05:22:44,366 INFO L913 BasicCegarLoop]: 62 mSDtfsCounter, 217 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1091 mSolverCounterSat, 264 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 1355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 264 IncrementalHoareTripleChecker+Valid, 1091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-05 05:22:44,366 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 94 Invalid, 1355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [264 Valid, 1091 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-05 05:22:44,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2022-04-05 05:22:44,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 403. [2022-04-05 05:22:44,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 322 states have (on average 1.0124223602484472) internal successors, (326), 323 states have internal predecessors, (326), 45 states have call successors, (45), 36 states have call predecessors, (45), 35 states have return successors, (44), 43 states have call predecessors, (44), 44 states have call successors, (44) [2022-04-05 05:22:44,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 415 transitions. [2022-04-05 05:22:44,390 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 415 transitions. Word has length 420 [2022-04-05 05:22:44,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:22:44,390 INFO L478 AbstractCegarLoop]: Abstraction has 403 states and 415 transitions. [2022-04-05 05:22:44,390 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 4.7254901960784315) internal successors, (241), 48 states have internal predecessors, (241), 43 states have call successors, (47), 4 states have call predecessors, (47), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-04-05 05:22:44,390 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 415 transitions. [2022-04-05 05:22:44,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2022-04-05 05:22:44,392 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:22:44,392 INFO L499 BasicCegarLoop]: trace histogram [43, 43, 43, 42, 42, 42, 42, 42, 42, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:22:44,410 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2022-04-05 05:22:44,607 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:22:44,607 INFO L403 AbstractCegarLoop]: === Iteration 52 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:22:44,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:22:44,608 INFO L85 PathProgramCache]: Analyzing trace with hash 2013148152, now seen corresponding path program 49 times [2022-04-05 05:22:44,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:22:44,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119842586] [2022-04-05 05:22:44,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:22:44,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:22:44,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:46,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:22:46,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:46,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-04-05 05:22:46,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:46,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-04-05 05:22:46,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:46,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-04-05 05:22:46,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:46,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-04-05 05:22:46,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:46,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-04-05 05:22:46,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:46,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-04-05 05:22:46,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:46,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-04-05 05:22:46,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:46,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-04-05 05:22:46,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:46,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-04-05 05:22:46,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:46,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-04-05 05:22:46,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:46,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-04-05 05:22:46,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:46,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-04-05 05:22:46,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:46,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-04-05 05:22:46,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:46,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-04-05 05:22:46,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:46,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-04-05 05:22:46,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:46,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-04-05 05:22:46,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:46,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-04-05 05:22:46,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:46,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-04-05 05:22:46,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:46,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-04-05 05:22:46,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:46,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-04-05 05:22:46,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:46,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-04-05 05:22:46,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:46,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-04-05 05:22:46,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:46,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-04-05 05:22:46,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:46,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-04-05 05:22:46,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:46,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-04-05 05:22:46,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:46,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-04-05 05:22:46,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:46,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-04-05 05:22:46,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:46,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-04-05 05:22:46,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:46,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-04-05 05:22:46,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:46,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-04-05 05:22:46,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:46,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-04-05 05:22:46,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:46,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-04-05 05:22:46,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:46,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-04-05 05:22:46,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:46,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-04-05 05:22:46,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:46,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-04-05 05:22:46,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:46,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-04-05 05:22:46,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:46,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-04-05 05:22:46,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:46,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-04-05 05:22:46,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:46,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-04-05 05:22:46,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:46,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-04-05 05:22:46,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:46,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2022-04-05 05:22:46,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:46,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2022-04-05 05:22:46,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:46,511 INFO L134 CoverageAnalysis]: Checked inductivity of 8778 backedges. 3489 proven. 1845 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2022-04-05 05:22:46,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:22:46,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119842586] [2022-04-05 05:22:46,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119842586] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:22:46,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470159109] [2022-04-05 05:22:46,512 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-05 05:22:46,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:22:46,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:22:46,513 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 05:22:46,514 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 05:22:46,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:46,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 1192 conjuncts, 86 conjunts are in the unsatisfiable core [2022-04-05 05:22:46,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:22:49,545 INFO L134 CoverageAnalysis]: Checked inductivity of 8778 backedges. 3772 proven. 1722 refuted. 0 times theorem prover too weak. 3284 trivial. 0 not checked. [2022-04-05 05:22:49,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:22:50,171 INFO L134 CoverageAnalysis]: Checked inductivity of 8778 backedges. 3610 proven. 1722 refuted. 0 times theorem prover too weak. 3446 trivial. 0 not checked. [2022-04-05 05:22:50,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1470159109] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:22:50,172 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:22:50,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 86, 86] total 132 [2022-04-05 05:22:50,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469062692] [2022-04-05 05:22:50,172 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:22:50,172 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 132 states [2022-04-05 05:22:50,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:22:50,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2022-04-05 05:22:50,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3833, Invalid=13459, Unknown=0, NotChecked=0, Total=17292 [2022-04-05 05:22:50,174 INFO L87 Difference]: Start difference. First operand 403 states and 415 transitions. Second operand has 132 states, 132 states have (on average 2.734848484848485) internal successors, (361), 131 states have internal predecessors, (361), 86 states have call successors, (89), 3 states have call predecessors, (89), 2 states have return successors, (87), 86 states have call predecessors, (87), 86 states have call successors, (87) [2022-04-05 05:22:53,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:22:53,478 INFO L93 Difference]: Finished difference Result 754 states and 892 transitions. [2022-04-05 05:22:53,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-04-05 05:22:53,479 INFO L78 Accepts]: Start accepts. Automaton has has 132 states, 132 states have (on average 2.734848484848485) internal successors, (361), 131 states have internal predecessors, (361), 86 states have call successors, (89), 3 states have call predecessors, (89), 2 states have return successors, (87), 86 states have call predecessors, (87), 86 states have call successors, (87) Word has length 436 [2022-04-05 05:22:53,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:22:53,480 INFO L225 Difference]: With dead ends: 754 [2022-04-05 05:22:53,480 INFO L226 Difference]: Without dead ends: 573 [2022-04-05 05:22:53,483 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1170 GetRequests, 956 SyntacticMatches, 0 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12751 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=10282, Invalid=36158, Unknown=0, NotChecked=0, Total=46440 [2022-04-05 05:22:53,483 INFO L913 BasicCegarLoop]: 96 mSDtfsCounter, 896 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 2605 mSolverCounterSat, 610 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 897 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 3215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 610 IncrementalHoareTripleChecker+Valid, 2605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-04-05 05:22:53,484 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [897 Valid, 158 Invalid, 3215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [610 Valid, 2605 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-04-05 05:22:53,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2022-04-05 05:22:53,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 405. [2022-04-05 05:22:53,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 324 states have (on average 1.0123456790123457) internal successors, (328), 325 states have internal predecessors, (328), 45 states have call successors, (45), 36 states have call predecessors, (45), 35 states have return successors, (44), 43 states have call predecessors, (44), 44 states have call successors, (44) [2022-04-05 05:22:53,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 417 transitions. [2022-04-05 05:22:53,508 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 417 transitions. Word has length 436 [2022-04-05 05:22:53,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:22:53,508 INFO L478 AbstractCegarLoop]: Abstraction has 405 states and 417 transitions. [2022-04-05 05:22:53,509 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 132 states, 132 states have (on average 2.734848484848485) internal successors, (361), 131 states have internal predecessors, (361), 86 states have call successors, (89), 3 states have call predecessors, (89), 2 states have return successors, (87), 86 states have call predecessors, (87), 86 states have call successors, (87) [2022-04-05 05:22:53,509 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 417 transitions. [2022-04-05 05:22:53,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2022-04-05 05:22:53,510 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:22:53,510 INFO L499 BasicCegarLoop]: trace histogram [43, 43, 43, 43, 42, 42, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:22:53,545 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 05:22:53,723 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2022-04-05 05:22:53,723 INFO L403 AbstractCegarLoop]: === Iteration 53 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:22:53,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:22:53,724 INFO L85 PathProgramCache]: Analyzing trace with hash -498131109, now seen corresponding path program 50 times [2022-04-05 05:22:53,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:22:53,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087928558] [2022-04-05 05:22:53,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:22:53,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:22:53,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:55,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:22:55,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:55,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-04-05 05:22:55,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:55,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-04-05 05:22:55,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:55,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-04-05 05:22:55,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:55,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-04-05 05:22:55,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:55,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-04-05 05:22:55,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:55,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-04-05 05:22:55,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:55,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-04-05 05:22:55,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:55,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-04-05 05:22:55,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:55,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-04-05 05:22:55,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:55,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-04-05 05:22:55,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:55,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-04-05 05:22:55,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:55,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-04-05 05:22:55,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:55,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-04-05 05:22:55,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:55,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-04-05 05:22:55,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:55,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-04-05 05:22:55,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:55,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-04-05 05:22:55,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:55,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-04-05 05:22:55,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:55,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-04-05 05:22:55,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:55,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-04-05 05:22:55,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:55,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-04-05 05:22:55,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:55,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-04-05 05:22:55,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:55,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-04-05 05:22:55,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:55,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-04-05 05:22:55,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:55,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-04-05 05:22:55,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:55,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-04-05 05:22:55,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:55,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-04-05 05:22:55,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:55,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-04-05 05:22:55,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:55,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-04-05 05:22:55,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:55,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-04-05 05:22:55,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:55,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-04-05 05:22:55,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:55,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-04-05 05:22:55,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:55,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-04-05 05:22:55,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:55,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-04-05 05:22:55,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:55,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-04-05 05:22:55,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:55,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-04-05 05:22:55,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:55,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-04-05 05:22:55,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:55,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-04-05 05:22:55,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:55,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-04-05 05:22:55,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:55,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-04-05 05:22:55,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:55,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-04-05 05:22:55,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:55,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-04-05 05:22:55,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:55,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-04-05 05:22:55,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:22:55,601 INFO L134 CoverageAnalysis]: Checked inductivity of 8862 backedges. 3489 proven. 1929 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2022-04-05 05:22:55,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:22:55,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087928558] [2022-04-05 05:22:55,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087928558] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:22:55,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622190213] [2022-04-05 05:22:55,602 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 05:22:55,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:22:55,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:22:55,603 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 05:22:55,603 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 05:22:55,730 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 05:22:55,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:22:55,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 1202 conjuncts, 88 conjunts are in the unsatisfiable core [2022-04-05 05:22:55,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:22:57,847 INFO L134 CoverageAnalysis]: Checked inductivity of 8862 backedges. 1890 proven. 3528 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2022-04-05 05:22:57,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:22:58,438 INFO L134 CoverageAnalysis]: Checked inductivity of 8862 backedges. 1890 proven. 3528 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2022-04-05 05:22:58,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622190213] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:22:58,439 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:22:58,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 47, 47] total 134 [2022-04-05 05:22:58,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762982035] [2022-04-05 05:22:58,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:22:58,440 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 134 states [2022-04-05 05:22:58,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:22:58,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2022-04-05 05:22:58,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2932, Invalid=14890, Unknown=0, NotChecked=0, Total=17822 [2022-04-05 05:22:58,441 INFO L87 Difference]: Start difference. First operand 405 states and 417 transitions. Second operand has 134 states, 134 states have (on average 3.3507462686567164) internal successors, (449), 132 states have internal predecessors, (449), 87 states have call successors, (89), 4 states have call predecessors, (89), 1 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2022-04-05 05:23:04,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:23:04,149 INFO L93 Difference]: Finished difference Result 767 states and 909 transitions. [2022-04-05 05:23:04,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 176 states. [2022-04-05 05:23:04,150 INFO L78 Accepts]: Start accepts. Automaton has has 134 states, 134 states have (on average 3.3507462686567164) internal successors, (449), 132 states have internal predecessors, (449), 87 states have call successors, (89), 4 states have call predecessors, (89), 1 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) Word has length 438 [2022-04-05 05:23:04,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:23:04,151 INFO L225 Difference]: With dead ends: 767 [2022-04-05 05:23:04,151 INFO L226 Difference]: Without dead ends: 588 [2022-04-05 05:23:04,156 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1267 GetRequests, 961 SyntacticMatches, 1 SemanticMatches, 305 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32884 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=15663, Invalid=78279, Unknown=0, NotChecked=0, Total=93942 [2022-04-05 05:23:04,156 INFO L913 BasicCegarLoop]: 138 mSDtfsCounter, 1301 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 5355 mSolverCounterSat, 1131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1302 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 6486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1131 IncrementalHoareTripleChecker+Valid, 5355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-04-05 05:23:04,156 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1302 Valid, 215 Invalid, 6486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1131 Valid, 5355 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-04-05 05:23:04,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2022-04-05 05:23:04,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 415. [2022-04-05 05:23:04,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 332 states have (on average 1.0120481927710843) internal successors, (336), 333 states have internal predecessors, (336), 46 states have call successors, (46), 37 states have call predecessors, (46), 36 states have return successors, (45), 44 states have call predecessors, (45), 45 states have call successors, (45) [2022-04-05 05:23:04,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 427 transitions. [2022-04-05 05:23:04,181 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 427 transitions. Word has length 438 [2022-04-05 05:23:04,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:23:04,182 INFO L478 AbstractCegarLoop]: Abstraction has 415 states and 427 transitions. [2022-04-05 05:23:04,182 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 134 states, 134 states have (on average 3.3507462686567164) internal successors, (449), 132 states have internal predecessors, (449), 87 states have call successors, (89), 4 states have call predecessors, (89), 1 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2022-04-05 05:23:04,182 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 427 transitions. [2022-04-05 05:23:04,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2022-04-05 05:23:04,184 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:23:04,184 INFO L499 BasicCegarLoop]: trace histogram [44, 44, 44, 44, 43, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:23:04,201 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 05:23:04,384 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,SelfDestructingSolverStorable52 [2022-04-05 05:23:04,384 INFO L403 AbstractCegarLoop]: === Iteration 54 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:23:04,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:23:04,385 INFO L85 PathProgramCache]: Analyzing trace with hash 2042736274, now seen corresponding path program 51 times [2022-04-05 05:23:04,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:23:04,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111344825] [2022-04-05 05:23:04,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:23:04,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:23:04,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:06,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:23:06,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:06,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-04-05 05:23:06,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:06,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-04-05 05:23:06,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:06,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-04-05 05:23:06,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:06,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-04-05 05:23:06,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:06,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-04-05 05:23:06,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:06,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-04-05 05:23:06,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:06,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-04-05 05:23:06,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:06,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-04-05 05:23:06,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:06,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-04-05 05:23:06,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:06,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-04-05 05:23:06,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:06,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-04-05 05:23:06,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:06,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-04-05 05:23:06,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:06,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-04-05 05:23:06,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:06,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-04-05 05:23:06,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:06,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-04-05 05:23:06,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:06,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-04-05 05:23:06,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:06,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-04-05 05:23:06,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:06,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-04-05 05:23:06,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:06,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-04-05 05:23:06,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:06,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-04-05 05:23:06,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:06,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-04-05 05:23:06,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:06,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-04-05 05:23:06,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:06,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-04-05 05:23:06,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:06,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-04-05 05:23:06,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:06,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-04-05 05:23:06,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:06,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-04-05 05:23:06,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:06,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-04-05 05:23:06,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:06,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-04-05 05:23:06,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:06,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-04-05 05:23:06,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:06,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-04-05 05:23:06,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:06,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-04-05 05:23:06,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:06,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-04-05 05:23:06,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:06,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-04-05 05:23:06,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:06,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-04-05 05:23:06,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:06,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-04-05 05:23:06,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:06,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-04-05 05:23:06,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:06,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-04-05 05:23:06,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:06,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-04-05 05:23:06,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:06,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-04-05 05:23:06,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:06,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-04-05 05:23:06,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:06,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2022-04-05 05:23:06,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:06,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2022-04-05 05:23:06,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:06,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2022-04-05 05:23:06,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:06,323 INFO L134 CoverageAnalysis]: Checked inductivity of 9288 backedges. 3658 proven. 2018 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2022-04-05 05:23:06,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:23:06,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111344825] [2022-04-05 05:23:06,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111344825] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:23:06,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063119630] [2022-04-05 05:23:06,324 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-05 05:23:06,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:23:06,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:23:06,325 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 05:23:06,325 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 05:23:06,515 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 44 check-sat command(s) [2022-04-05 05:23:06,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:23:06,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 1229 conjuncts, 90 conjunts are in the unsatisfiable core [2022-04-05 05:23:06,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:23:08,728 INFO L134 CoverageAnalysis]: Checked inductivity of 9288 backedges. 1978 proven. 3698 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2022-04-05 05:23:08,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:23:09,306 INFO L134 CoverageAnalysis]: Checked inductivity of 9288 backedges. 1978 proven. 3698 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2022-04-05 05:23:09,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063119630] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:23:09,307 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:23:09,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 48, 48] total 137 [2022-04-05 05:23:09,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078504991] [2022-04-05 05:23:09,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:23:09,308 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 137 states [2022-04-05 05:23:09,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:23:09,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2022-04-05 05:23:09,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3066, Invalid=15566, Unknown=0, NotChecked=0, Total=18632 [2022-04-05 05:23:09,309 INFO L87 Difference]: Start difference. First operand 415 states and 427 transitions. Second operand has 137 states, 137 states have (on average 3.3503649635036497) internal successors, (459), 135 states have internal predecessors, (459), 89 states have call successors, (91), 4 states have call predecessors, (91), 1 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2022-04-05 05:23:15,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:23:15,393 INFO L93 Difference]: Finished difference Result 785 states and 930 transitions. [2022-04-05 05:23:15,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states. [2022-04-05 05:23:15,393 INFO L78 Accepts]: Start accepts. Automaton has has 137 states, 137 states have (on average 3.3503649635036497) internal successors, (459), 135 states have internal predecessors, (459), 89 states have call successors, (91), 4 states have call predecessors, (91), 1 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) Word has length 448 [2022-04-05 05:23:15,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:23:15,396 INFO L225 Difference]: With dead ends: 785 [2022-04-05 05:23:15,396 INFO L226 Difference]: Without dead ends: 602 [2022-04-05 05:23:15,404 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1296 GetRequests, 983 SyntacticMatches, 1 SemanticMatches, 312 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34441 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=16379, Invalid=81903, Unknown=0, NotChecked=0, Total=98282 [2022-04-05 05:23:15,409 INFO L913 BasicCegarLoop]: 141 mSDtfsCounter, 1406 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 5344 mSolverCounterSat, 1325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1407 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 6669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1325 IncrementalHoareTripleChecker+Valid, 5344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-04-05 05:23:15,411 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1407 Valid, 238 Invalid, 6669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1325 Valid, 5344 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-04-05 05:23:15,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2022-04-05 05:23:15,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 425. [2022-04-05 05:23:15,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 340 states have (on average 1.011764705882353) internal successors, (344), 341 states have internal predecessors, (344), 47 states have call successors, (47), 38 states have call predecessors, (47), 37 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2022-04-05 05:23:15,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 437 transitions. [2022-04-05 05:23:15,438 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 437 transitions. Word has length 448 [2022-04-05 05:23:15,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:23:15,438 INFO L478 AbstractCegarLoop]: Abstraction has 425 states and 437 transitions. [2022-04-05 05:23:15,438 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 137 states, 137 states have (on average 3.3503649635036497) internal successors, (459), 135 states have internal predecessors, (459), 89 states have call successors, (91), 4 states have call predecessors, (91), 1 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2022-04-05 05:23:15,438 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 437 transitions. [2022-04-05 05:23:15,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2022-04-05 05:23:15,440 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:23:15,440 INFO L499 BasicCegarLoop]: trace histogram [45, 45, 45, 45, 44, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:23:15,465 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 05:23:15,640 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:23:15,640 INFO L403 AbstractCegarLoop]: === Iteration 55 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:23:15,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:23:15,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1276827895, now seen corresponding path program 52 times [2022-04-05 05:23:15,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:23:15,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897947783] [2022-04-05 05:23:15,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:23:15,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:23:15,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:17,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:23:17,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:17,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-04-05 05:23:17,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:17,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-04-05 05:23:17,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:17,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-04-05 05:23:17,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:17,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-04-05 05:23:17,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:17,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-04-05 05:23:17,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:17,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-04-05 05:23:17,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:17,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-04-05 05:23:17,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:17,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-04-05 05:23:17,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:17,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-04-05 05:23:17,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:17,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-04-05 05:23:17,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:17,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-04-05 05:23:17,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:17,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-04-05 05:23:17,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:17,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-04-05 05:23:17,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:17,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-04-05 05:23:17,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:17,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-04-05 05:23:17,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:17,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-04-05 05:23:17,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:17,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-04-05 05:23:17,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:17,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-04-05 05:23:17,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:17,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-04-05 05:23:17,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:17,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-04-05 05:23:17,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:17,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-04-05 05:23:17,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:17,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-04-05 05:23:17,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:17,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-04-05 05:23:17,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:17,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-04-05 05:23:17,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:17,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-04-05 05:23:17,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:17,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-04-05 05:23:17,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:17,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-04-05 05:23:17,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:17,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-04-05 05:23:17,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:17,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-04-05 05:23:17,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:17,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-04-05 05:23:17,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:17,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-04-05 05:23:17,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:17,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-04-05 05:23:17,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:17,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-04-05 05:23:17,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:17,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-04-05 05:23:17,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:17,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-04-05 05:23:17,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:17,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-04-05 05:23:17,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:17,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-04-05 05:23:17,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:17,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-04-05 05:23:17,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:17,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-04-05 05:23:17,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:17,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-04-05 05:23:17,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:17,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-04-05 05:23:17,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:17,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-04-05 05:23:17,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:17,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-04-05 05:23:17,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:17,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2022-04-05 05:23:17,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:17,759 INFO L134 CoverageAnalysis]: Checked inductivity of 9724 backedges. 3831 proven. 2109 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2022-04-05 05:23:17,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:23:17,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897947783] [2022-04-05 05:23:17,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897947783] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:23:17,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258142655] [2022-04-05 05:23:17,759 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-05 05:23:17,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:23:17,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:23:17,760 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 05:23:17,760 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 05:23:17,889 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-05 05:23:17,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:23:17,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 1256 conjuncts, 92 conjunts are in the unsatisfiable core [2022-04-05 05:23:17,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:23:20,237 INFO L134 CoverageAnalysis]: Checked inductivity of 9724 backedges. 2068 proven. 3872 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2022-04-05 05:23:20,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:23:20,818 INFO L134 CoverageAnalysis]: Checked inductivity of 9724 backedges. 2068 proven. 3872 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2022-04-05 05:23:20,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [258142655] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:23:20,819 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:23:20,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 49, 49] total 140 [2022-04-05 05:23:20,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524675710] [2022-04-05 05:23:20,819 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:23:20,820 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 140 states [2022-04-05 05:23:20,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:23:20,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2022-04-05 05:23:20,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3203, Invalid=16257, Unknown=0, NotChecked=0, Total=19460 [2022-04-05 05:23:20,822 INFO L87 Difference]: Start difference. First operand 425 states and 437 transitions. Second operand has 140 states, 140 states have (on average 3.35) internal successors, (469), 138 states have internal predecessors, (469), 91 states have call successors, (93), 4 states have call predecessors, (93), 1 states have return successors, (89), 89 states have call predecessors, (89), 89 states have call successors, (89) [2022-04-05 05:23:27,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:23:27,542 INFO L93 Difference]: Finished difference Result 803 states and 951 transitions. [2022-04-05 05:23:27,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2022-04-05 05:23:27,543 INFO L78 Accepts]: Start accepts. Automaton has has 140 states, 140 states have (on average 3.35) internal successors, (469), 138 states have internal predecessors, (469), 91 states have call successors, (93), 4 states have call predecessors, (93), 1 states have return successors, (89), 89 states have call predecessors, (89), 89 states have call successors, (89) Word has length 458 [2022-04-05 05:23:27,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:23:27,545 INFO L225 Difference]: With dead ends: 803 [2022-04-05 05:23:27,545 INFO L226 Difference]: Without dead ends: 616 [2022-04-05 05:23:27,550 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1325 GetRequests, 1005 SyntacticMatches, 1 SemanticMatches, 319 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36034 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=17111, Invalid=85609, Unknown=0, NotChecked=0, Total=102720 [2022-04-05 05:23:27,550 INFO L913 BasicCegarLoop]: 144 mSDtfsCounter, 1269 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 6674 mSolverCounterSat, 1081 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1270 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 7755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1081 IncrementalHoareTripleChecker+Valid, 6674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-04-05 05:23:27,550 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1270 Valid, 256 Invalid, 7755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1081 Valid, 6674 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-04-05 05:23:27,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2022-04-05 05:23:27,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 435. [2022-04-05 05:23:27,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 348 states have (on average 1.0114942528735633) internal successors, (352), 349 states have internal predecessors, (352), 48 states have call successors, (48), 39 states have call predecessors, (48), 38 states have return successors, (47), 46 states have call predecessors, (47), 47 states have call successors, (47) [2022-04-05 05:23:27,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 447 transitions. [2022-04-05 05:23:27,579 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 447 transitions. Word has length 458 [2022-04-05 05:23:27,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:23:27,579 INFO L478 AbstractCegarLoop]: Abstraction has 435 states and 447 transitions. [2022-04-05 05:23:27,579 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 140 states, 140 states have (on average 3.35) internal successors, (469), 138 states have internal predecessors, (469), 91 states have call successors, (93), 4 states have call predecessors, (93), 1 states have return successors, (89), 89 states have call predecessors, (89), 89 states have call successors, (89) [2022-04-05 05:23:27,579 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 447 transitions. [2022-04-05 05:23:27,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2022-04-05 05:23:27,581 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:23:27,581 INFO L499 BasicCegarLoop]: trace histogram [46, 46, 46, 46, 45, 45, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:23:27,600 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 05:23:27,793 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,SelfDestructingSolverStorable54 [2022-04-05 05:23:27,793 INFO L403 AbstractCegarLoop]: === Iteration 56 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:23:27,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:23:27,793 INFO L85 PathProgramCache]: Analyzing trace with hash -197855040, now seen corresponding path program 53 times [2022-04-05 05:23:27,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:23:27,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731263365] [2022-04-05 05:23:27,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:23:27,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:23:27,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:29,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:23:29,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:29,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-04-05 05:23:29,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:29,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-04-05 05:23:29,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:29,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-04-05 05:23:29,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:29,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-04-05 05:23:29,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:29,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-04-05 05:23:29,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:29,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-04-05 05:23:29,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:29,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-04-05 05:23:29,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:29,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-04-05 05:23:29,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:29,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-04-05 05:23:29,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:29,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-04-05 05:23:29,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:29,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-04-05 05:23:29,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:29,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-04-05 05:23:29,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:29,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-04-05 05:23:29,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:29,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-04-05 05:23:29,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:29,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-04-05 05:23:29,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:29,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-04-05 05:23:29,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:29,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-04-05 05:23:29,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:29,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-04-05 05:23:29,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:29,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-04-05 05:23:29,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:29,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-04-05 05:23:29,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:29,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-04-05 05:23:29,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:29,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-04-05 05:23:29,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:29,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-04-05 05:23:29,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:29,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-04-05 05:23:29,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:29,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-04-05 05:23:29,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:29,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-04-05 05:23:29,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:29,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-04-05 05:23:29,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:29,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-04-05 05:23:29,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:29,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-04-05 05:23:29,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:29,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-04-05 05:23:29,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:29,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-04-05 05:23:29,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:29,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-04-05 05:23:29,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:29,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-04-05 05:23:29,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:29,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-04-05 05:23:29,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:29,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-04-05 05:23:29,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:29,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-04-05 05:23:29,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:29,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-04-05 05:23:29,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:29,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-04-05 05:23:29,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:29,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-04-05 05:23:29,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:29,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2022-04-05 05:23:29,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:29,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2022-04-05 05:23:29,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:29,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2022-04-05 05:23:29,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:29,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2022-04-05 05:23:29,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:29,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2022-04-05 05:23:29,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:29,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2022-04-05 05:23:29,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:29,915 INFO L134 CoverageAnalysis]: Checked inductivity of 10170 backedges. 4008 proven. 2202 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2022-04-05 05:23:29,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:23:29,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731263365] [2022-04-05 05:23:29,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731263365] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:23:29,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105970142] [2022-04-05 05:23:29,916 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-05 05:23:29,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:23:29,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:23:29,917 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 05:23:29,918 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 05:23:30,117 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2022-04-05 05:23:30,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:23:30,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 1283 conjuncts, 94 conjunts are in the unsatisfiable core [2022-04-05 05:23:30,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:23:33,319 INFO L134 CoverageAnalysis]: Checked inductivity of 10170 backedges. 4140 proven. 2070 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2022-04-05 05:23:33,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:23:33,980 INFO L134 CoverageAnalysis]: Checked inductivity of 10170 backedges. 4140 proven. 2070 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2022-04-05 05:23:33,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105970142] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:23:33,980 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:23:33,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 94, 94] total 143 [2022-04-05 05:23:33,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128659303] [2022-04-05 05:23:33,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:23:33,981 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 143 states [2022-04-05 05:23:33,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:23:33,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2022-04-05 05:23:33,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4517, Invalid=15789, Unknown=0, NotChecked=0, Total=20306 [2022-04-05 05:23:33,984 INFO L87 Difference]: Start difference. First operand 435 states and 447 transitions. Second operand has 143 states, 143 states have (on average 2.6923076923076925) internal successors, (385), 142 states have internal predecessors, (385), 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 05:23:37,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:23:37,681 INFO L93 Difference]: Finished difference Result 812 states and 962 transitions. [2022-04-05 05:23:37,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-04-05 05:23:37,682 INFO L78 Accepts]: Start accepts. Automaton has has 143 states, 143 states have (on average 2.6923076923076925) internal successors, (385), 142 states have internal predecessors, (385), 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 468 [2022-04-05 05:23:37,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:23:37,684 INFO L225 Difference]: With dead ends: 812 [2022-04-05 05:23:37,684 INFO L226 Difference]: Without dead ends: 621 [2022-04-05 05:23:37,687 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1259 GetRequests, 1026 SyntacticMatches, 0 SemanticMatches, 233 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15070 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=12224, Invalid=42766, Unknown=0, NotChecked=0, Total=54990 [2022-04-05 05:23:37,687 INFO L913 BasicCegarLoop]: 104 mSDtfsCounter, 1199 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 2493 mSolverCounterSat, 873 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1200 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 3366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 873 IncrementalHoareTripleChecker+Valid, 2493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-04-05 05:23:37,688 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1200 Valid, 141 Invalid, 3366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [873 Valid, 2493 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-04-05 05:23:37,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2022-04-05 05:23:37,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 437. [2022-04-05 05:23:37,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 350 states have (on average 1.0114285714285713) internal successors, (354), 351 states have internal predecessors, (354), 48 states have call successors, (48), 39 states have call predecessors, (48), 38 states have return successors, (47), 46 states have call predecessors, (47), 47 states have call successors, (47) [2022-04-05 05:23:37,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 449 transitions. [2022-04-05 05:23:37,715 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 449 transitions. Word has length 468 [2022-04-05 05:23:37,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:23:37,716 INFO L478 AbstractCegarLoop]: Abstraction has 437 states and 449 transitions. [2022-04-05 05:23:37,716 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 143 states, 143 states have (on average 2.6923076923076925) internal successors, (385), 142 states have internal predecessors, (385), 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 05:23:37,716 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 449 transitions. [2022-04-05 05:23:37,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2022-04-05 05:23:37,718 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:23:37,718 INFO L499 BasicCegarLoop]: trace histogram [47, 46, 46, 46, 46, 45, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:23:37,735 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2022-04-05 05:23:37,918 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,SelfDestructingSolverStorable55 [2022-04-05 05:23:37,918 INFO L403 AbstractCegarLoop]: === Iteration 57 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:23:37,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:23:37,919 INFO L85 PathProgramCache]: Analyzing trace with hash -762865629, now seen corresponding path program 54 times [2022-04-05 05:23:37,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:23:37,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999088175] [2022-04-05 05:23:37,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:23:37,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:23:37,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:38,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:23:38,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:38,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-04-05 05:23:38,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:38,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-04-05 05:23:38,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:38,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-04-05 05:23:38,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:38,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-04-05 05:23:38,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:38,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-04-05 05:23:38,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:38,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-04-05 05:23:38,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:38,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-04-05 05:23:38,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:38,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-04-05 05:23:38,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:38,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-04-05 05:23:38,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:38,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-04-05 05:23:38,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:38,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-04-05 05:23:38,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:38,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-04-05 05:23:38,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:38,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-04-05 05:23:38,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:38,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-04-05 05:23:38,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:38,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-04-05 05:23:38,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:38,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-04-05 05:23:38,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:38,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-04-05 05:23:38,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:38,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-04-05 05:23:38,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:38,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-04-05 05:23:38,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:38,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-04-05 05:23:38,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:38,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-04-05 05:23:38,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:38,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-04-05 05:23:38,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:38,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-04-05 05:23:38,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:38,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-04-05 05:23:38,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:38,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-04-05 05:23:38,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:38,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-04-05 05:23:38,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:38,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-04-05 05:23:38,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:38,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-04-05 05:23:38,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:38,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-04-05 05:23:38,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:38,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-04-05 05:23:38,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:38,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-04-05 05:23:38,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:38,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-04-05 05:23:38,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:38,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-04-05 05:23:38,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:38,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-04-05 05:23:38,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:38,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-04-05 05:23:38,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:38,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-04-05 05:23:38,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:38,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-04-05 05:23:38,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:38,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-04-05 05:23:38,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:38,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-04-05 05:23:38,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:38,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-04-05 05:23:38,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:38,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-04-05 05:23:38,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:38,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-04-05 05:23:38,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:38,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2022-04-05 05:23:38,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:38,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2022-04-05 05:23:38,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:38,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2022-04-05 05:23:38,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:38,868 INFO L134 CoverageAnalysis]: Checked inductivity of 10262 backedges. 2160 proven. 4142 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2022-04-05 05:23:38,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:23:38,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999088175] [2022-04-05 05:23:38,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999088175] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:23:38,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047693349] [2022-04-05 05:23:38,868 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-05 05:23:38,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:23:38,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:23:38,869 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 05:23:38,870 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 05:23:39,095 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 47 check-sat command(s) [2022-04-05 05:23:39,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:23:39,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 1293 conjuncts, 95 conjunts are in the unsatisfiable core [2022-04-05 05:23:39,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:23:39,656 INFO L134 CoverageAnalysis]: Checked inductivity of 10262 backedges. 2252 proven. 4050 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2022-04-05 05:23:39,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:23:40,256 INFO L134 CoverageAnalysis]: Checked inductivity of 10262 backedges. 2252 proven. 4050 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2022-04-05 05:23:40,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047693349] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:23:40,257 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:23:40,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 51, 51] total 56 [2022-04-05 05:23:40,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441621528] [2022-04-05 05:23:40,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:23:40,258 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-04-05 05:23:40,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:23:40,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-04-05 05:23:40,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1241, Invalid=1839, Unknown=0, NotChecked=0, Total=3080 [2022-04-05 05:23:40,258 INFO L87 Difference]: Start difference. First operand 437 states and 449 transitions. Second operand has 56 states, 56 states have (on average 4.75) internal successors, (266), 53 states have internal predecessors, (266), 48 states have call successors, (52), 4 states have call predecessors, (52), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2022-04-05 05:23:41,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:23:41,439 INFO L93 Difference]: Finished difference Result 456 states and 470 transitions. [2022-04-05 05:23:41,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-04-05 05:23:41,440 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 4.75) internal successors, (266), 53 states have internal predecessors, (266), 48 states have call successors, (52), 4 states have call predecessors, (52), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) Word has length 470 [2022-04-05 05:23:41,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:23:41,441 INFO L225 Difference]: With dead ends: 456 [2022-04-05 05:23:41,441 INFO L226 Difference]: Without dead ends: 454 [2022-04-05 05:23:41,442 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1180 GetRequests, 1073 SyntacticMatches, 1 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2197 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=3715, Invalid=7841, Unknown=0, NotChecked=0, Total=11556 [2022-04-05 05:23:41,443 INFO L913 BasicCegarLoop]: 67 mSDtfsCounter, 236 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1468 mSolverCounterSat, 247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 1715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 1468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-05 05:23:41,443 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [237 Valid, 104 Invalid, 1715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [247 Valid, 1468 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-05 05:23:41,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2022-04-05 05:23:41,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 449. [2022-04-05 05:23:41,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 359 states have (on average 1.011142061281337) internal successors, (363), 360 states have internal predecessors, (363), 50 states have call successors, (50), 40 states have call predecessors, (50), 39 states have return successors, (49), 48 states have call predecessors, (49), 49 states have call successors, (49) [2022-04-05 05:23:41,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 462 transitions. [2022-04-05 05:23:41,471 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 462 transitions. Word has length 470 [2022-04-05 05:23:41,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:23:41,471 INFO L478 AbstractCegarLoop]: Abstraction has 449 states and 462 transitions. [2022-04-05 05:23:41,471 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 4.75) internal successors, (266), 53 states have internal predecessors, (266), 48 states have call successors, (52), 4 states have call predecessors, (52), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2022-04-05 05:23:41,471 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 462 transitions. [2022-04-05 05:23:41,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2022-04-05 05:23:41,473 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:23:41,473 INFO L499 BasicCegarLoop]: trace histogram [48, 48, 48, 47, 47, 47, 47, 47, 47, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:23:41,492 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 05:23:41,674 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:23:41,674 INFO L403 AbstractCegarLoop]: === Iteration 58 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:23:41,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:23:41,674 INFO L85 PathProgramCache]: Analyzing trace with hash 119454539, now seen corresponding path program 55 times [2022-04-05 05:23:41,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:23:41,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737829066] [2022-04-05 05:23:41,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:23:41,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:23:41,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:43,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:23:43,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:43,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-04-05 05:23:43,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:43,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-04-05 05:23:43,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:43,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-04-05 05:23:43,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:43,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-04-05 05:23:43,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:43,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-04-05 05:23:43,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:43,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-04-05 05:23:43,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:43,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-04-05 05:23:43,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:43,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-04-05 05:23:43,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:43,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-04-05 05:23:43,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:43,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-04-05 05:23:43,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:43,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-04-05 05:23:43,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:43,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-04-05 05:23:43,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:43,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-04-05 05:23:43,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:43,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-04-05 05:23:43,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:43,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-04-05 05:23:43,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:43,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-04-05 05:23:43,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:43,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-04-05 05:23:43,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:43,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-04-05 05:23:43,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:43,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-04-05 05:23:43,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:43,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-04-05 05:23:43,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:43,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-04-05 05:23:43,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:43,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-04-05 05:23:43,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:43,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-04-05 05:23:43,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:43,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-04-05 05:23:43,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:43,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-04-05 05:23:43,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:43,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-04-05 05:23:43,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:43,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-04-05 05:23:43,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:43,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-04-05 05:23:43,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:43,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-04-05 05:23:43,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:43,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-04-05 05:23:43,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:43,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-04-05 05:23:43,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:43,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-04-05 05:23:43,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:43,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-04-05 05:23:43,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:43,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-04-05 05:23:43,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:43,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-04-05 05:23:43,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:43,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-04-05 05:23:43,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:43,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-04-05 05:23:43,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:43,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-04-05 05:23:43,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:43,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-04-05 05:23:43,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:43,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-04-05 05:23:43,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:43,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-04-05 05:23:43,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:43,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-04-05 05:23:43,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:43,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2022-04-05 05:23:43,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:43,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2022-04-05 05:23:43,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:43,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2022-04-05 05:23:43,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:43,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2022-04-05 05:23:43,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:43,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2022-04-05 05:23:43,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:43,858 INFO L134 CoverageAnalysis]: Checked inductivity of 10998 backedges. 4374 proven. 2300 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2022-04-05 05:23:43,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:23:43,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737829066] [2022-04-05 05:23:43,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737829066] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:23:43,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932582883] [2022-04-05 05:23:43,859 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-05 05:23:43,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:23:43,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:23:43,859 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 05:23:43,860 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 05:23:43,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:43,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 1327 conjuncts, 96 conjunts are in the unsatisfiable core [2022-04-05 05:23:44,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:23:47,181 INFO L134 CoverageAnalysis]: Checked inductivity of 10998 backedges. 4692 proven. 2162 refuted. 0 times theorem prover too weak. 4144 trivial. 0 not checked. [2022-04-05 05:23:47,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:23:47,853 INFO L134 CoverageAnalysis]: Checked inductivity of 10998 backedges. 4510 proven. 2162 refuted. 0 times theorem prover too weak. 4326 trivial. 0 not checked. [2022-04-05 05:23:47,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932582883] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:23:47,854 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:23:47,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 96, 96] total 147 [2022-04-05 05:23:47,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264875212] [2022-04-05 05:23:47,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:23:47,855 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 147 states [2022-04-05 05:23:47,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:23:47,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 147 interpolants. [2022-04-05 05:23:47,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4758, Invalid=16704, Unknown=0, NotChecked=0, Total=21462 [2022-04-05 05:23:47,856 INFO L87 Difference]: Start difference. First operand 449 states and 462 transitions. Second operand has 147 states, 147 states have (on average 2.727891156462585) internal successors, (401), 146 states have internal predecessors, (401), 96 states have call successors, (99), 3 states have call predecessors, (99), 2 states have return successors, (97), 96 states have call predecessors, (97), 96 states have call successors, (97) [2022-04-05 05:23:51,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:23:51,602 INFO L93 Difference]: Finished difference Result 840 states and 994 transitions. [2022-04-05 05:23:51,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-04-05 05:23:51,603 INFO L78 Accepts]: Start accepts. Automaton has has 147 states, 147 states have (on average 2.727891156462585) internal successors, (401), 146 states have internal predecessors, (401), 96 states have call successors, (99), 3 states have call predecessors, (99), 2 states have return successors, (97), 96 states have call predecessors, (97), 96 states have call successors, (97) Word has length 486 [2022-04-05 05:23:51,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:23:51,604 INFO L225 Difference]: With dead ends: 840 [2022-04-05 05:23:51,604 INFO L226 Difference]: Without dead ends: 639 [2022-04-05 05:23:51,607 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1305 GetRequests, 1066 SyntacticMatches, 0 SemanticMatches, 239 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15916 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=12797, Invalid=45043, Unknown=0, NotChecked=0, Total=57840 [2022-04-05 05:23:51,608 INFO L913 BasicCegarLoop]: 106 mSDtfsCounter, 1060 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 2798 mSolverCounterSat, 763 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1061 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 3561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 763 IncrementalHoareTripleChecker+Valid, 2798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-04-05 05:23:51,608 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1061 Valid, 163 Invalid, 3561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [763 Valid, 2798 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-04-05 05:23:51,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2022-04-05 05:23:51,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 451. [2022-04-05 05:23:51,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 361 states have (on average 1.0110803324099722) internal successors, (365), 362 states have internal predecessors, (365), 50 states have call successors, (50), 40 states have call predecessors, (50), 39 states have return successors, (49), 48 states have call predecessors, (49), 49 states have call successors, (49) [2022-04-05 05:23:51,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 464 transitions. [2022-04-05 05:23:51,638 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 464 transitions. Word has length 486 [2022-04-05 05:23:51,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:23:51,638 INFO L478 AbstractCegarLoop]: Abstraction has 451 states and 464 transitions. [2022-04-05 05:23:51,638 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 147 states, 147 states have (on average 2.727891156462585) internal successors, (401), 146 states have internal predecessors, (401), 96 states have call successors, (99), 3 states have call predecessors, (99), 2 states have return successors, (97), 96 states have call predecessors, (97), 96 states have call successors, (97) [2022-04-05 05:23:51,638 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 464 transitions. [2022-04-05 05:23:51,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2022-04-05 05:23:51,640 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:23:51,641 INFO L499 BasicCegarLoop]: trace histogram [48, 48, 48, 48, 47, 47, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:23:51,657 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 05:23:51,855 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:23:51,855 INFO L403 AbstractCegarLoop]: === Iteration 59 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:23:51,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:23:51,856 INFO L85 PathProgramCache]: Analyzing trace with hash 277571566, now seen corresponding path program 56 times [2022-04-05 05:23:51,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:23:51,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191449634] [2022-04-05 05:23:51,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:23:51,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:23:51,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:53,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:23:53,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:53,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-04-05 05:23:53,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:53,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-04-05 05:23:53,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:53,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-04-05 05:23:53,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:53,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-04-05 05:23:53,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:53,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-04-05 05:23:53,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:53,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-04-05 05:23:53,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:53,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-04-05 05:23:53,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:53,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-04-05 05:23:53,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:53,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-04-05 05:23:54,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:54,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-04-05 05:23:54,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:54,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-04-05 05:23:54,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:54,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-04-05 05:23:54,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:54,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-04-05 05:23:54,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:54,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-04-05 05:23:54,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:54,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-04-05 05:23:54,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:54,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-04-05 05:23:54,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:54,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-04-05 05:23:54,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:54,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-04-05 05:23:54,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:54,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-04-05 05:23:54,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:54,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-04-05 05:23:54,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:54,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-04-05 05:23:54,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:54,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-04-05 05:23:54,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:54,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-04-05 05:23:54,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:54,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-04-05 05:23:54,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:54,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-04-05 05:23:54,017 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 308 [2022-04-05 05:23:54,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:54,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-04-05 05:23:54,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:54,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-04-05 05:23:54,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:54,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-04-05 05:23:54,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:54,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-04-05 05:23:54,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:54,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-04-05 05:23:54,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:54,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-04-05 05:23:54,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:54,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-04-05 05:23:54,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:54,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-04-05 05:23:54,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:54,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-04-05 05:23:54,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:54,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-04-05 05:23:54,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:54,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-04-05 05:23:54,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:54,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-04-05 05:23:54,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:54,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-04-05 05:23:54,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:54,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2022-04-05 05:23:54,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:54,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2022-04-05 05:23:54,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:54,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2022-04-05 05:23:54,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:54,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2022-04-05 05:23:54,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:54,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2022-04-05 05:23:54,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:54,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2022-04-05 05:23:54,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:54,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2022-04-05 05:23:54,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:54,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2022-04-05 05:23:54,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:23:54,044 INFO L134 CoverageAnalysis]: Checked inductivity of 11092 backedges. 4374 proven. 2394 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2022-04-05 05:23:54,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:23:54,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191449634] [2022-04-05 05:23:54,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191449634] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:23:54,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733138594] [2022-04-05 05:23:54,045 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 05:23:54,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:23:54,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:23:54,046 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 05:23:54,047 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 05:23:54,179 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 05:23:54,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:23:54,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 1337 conjuncts, 98 conjunts are in the unsatisfiable core [2022-04-05 05:23:54,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:23:56,757 INFO L134 CoverageAnalysis]: Checked inductivity of 11092 backedges. 2350 proven. 4418 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2022-04-05 05:23:56,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:23:57,383 INFO L134 CoverageAnalysis]: Checked inductivity of 11092 backedges. 2350 proven. 4418 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2022-04-05 05:23:57,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733138594] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:23:57,384 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:23:57,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 52, 52] total 149 [2022-04-05 05:23:57,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982901228] [2022-04-05 05:23:57,384 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:23:57,385 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 149 states [2022-04-05 05:23:57,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:23:57,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2022-04-05 05:23:57,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3632, Invalid=18420, Unknown=0, NotChecked=0, Total=22052 [2022-04-05 05:23:57,386 INFO L87 Difference]: Start difference. First operand 451 states and 464 transitions. Second operand has 149 states, 149 states have (on average 3.348993288590604) internal successors, (499), 147 states have internal predecessors, (499), 97 states have call successors, (99), 4 states have call predecessors, (99), 1 states have return successors, (95), 95 states have call predecessors, (95), 95 states have call successors, (95) [2022-04-05 05:24:04,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:24:04,098 INFO L93 Difference]: Finished difference Result 853 states and 1011 transitions. [2022-04-05 05:24:04,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2022-04-05 05:24:04,099 INFO L78 Accepts]: Start accepts. Automaton has has 149 states, 149 states have (on average 3.348993288590604) internal successors, (499), 147 states have internal predecessors, (499), 97 states have call successors, (99), 4 states have call predecessors, (99), 1 states have return successors, (95), 95 states have call predecessors, (95), 95 states have call successors, (95) Word has length 488 [2022-04-05 05:24:04,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:24:04,101 INFO L225 Difference]: With dead ends: 853 [2022-04-05 05:24:04,101 INFO L226 Difference]: Without dead ends: 654 [2022-04-05 05:24:04,107 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1412 GetRequests, 1071 SyntacticMatches, 1 SemanticMatches, 340 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41029 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=19403, Invalid=97219, Unknown=0, NotChecked=0, Total=116622 [2022-04-05 05:24:04,107 INFO L913 BasicCegarLoop]: 153 mSDtfsCounter, 1522 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 5550 mSolverCounterSat, 1339 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1523 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 6889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1339 IncrementalHoareTripleChecker+Valid, 5550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-04-05 05:24:04,107 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1523 Valid, 220 Invalid, 6889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1339 Valid, 5550 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-04-05 05:24:04,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2022-04-05 05:24:04,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 461. [2022-04-05 05:24:04,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 369 states have (on average 1.010840108401084) internal successors, (373), 370 states have internal predecessors, (373), 51 states have call successors, (51), 41 states have call predecessors, (51), 40 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) [2022-04-05 05:24:04,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 474 transitions. [2022-04-05 05:24:04,138 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 474 transitions. Word has length 488 [2022-04-05 05:24:04,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:24:04,138 INFO L478 AbstractCegarLoop]: Abstraction has 461 states and 474 transitions. [2022-04-05 05:24:04,138 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 149 states, 149 states have (on average 3.348993288590604) internal successors, (499), 147 states have internal predecessors, (499), 97 states have call successors, (99), 4 states have call predecessors, (99), 1 states have return successors, (95), 95 states have call predecessors, (95), 95 states have call successors, (95) [2022-04-05 05:24:04,138 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 474 transitions. [2022-04-05 05:24:04,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2022-04-05 05:24:04,140 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:24:04,140 INFO L499 BasicCegarLoop]: trace histogram [49, 49, 49, 49, 48, 48, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:24:04,157 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2022-04-05 05:24:04,342 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:24:04,343 INFO L403 AbstractCegarLoop]: === Iteration 60 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:24:04,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:24:04,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1808590181, now seen corresponding path program 57 times [2022-04-05 05:24:04,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:24:04,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436047784] [2022-04-05 05:24:04,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:24:04,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:24:04,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:06,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:24:06,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:06,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-04-05 05:24:06,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:06,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-04-05 05:24:06,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:06,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-04-05 05:24:06,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:06,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-04-05 05:24:06,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:06,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-04-05 05:24:06,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:06,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-04-05 05:24:06,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:06,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-04-05 05:24:06,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:06,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-04-05 05:24:06,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:06,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-04-05 05:24:06,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:06,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-04-05 05:24:06,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:06,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-04-05 05:24:06,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:06,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-04-05 05:24:06,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:06,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-04-05 05:24:06,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:06,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-04-05 05:24:06,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:06,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-04-05 05:24:06,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:06,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-04-05 05:24:06,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:06,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-04-05 05:24:06,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:06,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-04-05 05:24:06,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:06,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-04-05 05:24:06,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:06,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-04-05 05:24:06,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:06,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-04-05 05:24:06,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:06,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-04-05 05:24:06,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:06,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-04-05 05:24:06,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:06,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-04-05 05:24:06,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:06,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-04-05 05:24:06,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:06,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-04-05 05:24:06,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:06,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-04-05 05:24:06,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:06,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-04-05 05:24:06,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:06,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-04-05 05:24:06,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:06,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-04-05 05:24:06,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:06,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-04-05 05:24:06,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:06,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-04-05 05:24:06,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:06,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-04-05 05:24:06,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:06,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-04-05 05:24:06,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:06,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-04-05 05:24:06,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:06,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-04-05 05:24:06,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:06,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-04-05 05:24:06,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:06,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-04-05 05:24:06,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:06,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-04-05 05:24:06,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:06,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-04-05 05:24:06,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:06,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-04-05 05:24:06,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:06,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-04-05 05:24:06,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:06,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2022-04-05 05:24:06,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:06,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2022-04-05 05:24:06,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:06,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2022-04-05 05:24:06,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:06,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2022-04-05 05:24:06,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:06,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2022-04-05 05:24:06,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:06,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2022-04-05 05:24:06,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:06,731 INFO L134 CoverageAnalysis]: Checked inductivity of 11568 backedges. 4563 proven. 2493 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2022-04-05 05:24:06,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:24:06,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436047784] [2022-04-05 05:24:06,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436047784] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:24:06,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405289890] [2022-04-05 05:24:06,731 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-05 05:24:06,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:24:06,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:24:06,732 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 05:24:06,733 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 05:24:06,939 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 49 check-sat command(s) [2022-04-05 05:24:06,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:24:06,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 1364 conjuncts, 100 conjunts are in the unsatisfiable core [2022-04-05 05:24:06,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:24:09,678 INFO L134 CoverageAnalysis]: Checked inductivity of 11568 backedges. 2448 proven. 4608 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2022-04-05 05:24:09,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:24:10,400 INFO L134 CoverageAnalysis]: Checked inductivity of 11568 backedges. 2448 proven. 4608 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2022-04-05 05:24:10,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405289890] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:24:10,400 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:24:10,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 53, 53] total 152 [2022-04-05 05:24:10,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494931265] [2022-04-05 05:24:10,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:24:10,402 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 152 states [2022-04-05 05:24:10,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:24:10,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2022-04-05 05:24:10,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3781, Invalid=19171, Unknown=0, NotChecked=0, Total=22952 [2022-04-05 05:24:10,405 INFO L87 Difference]: Start difference. First operand 461 states and 474 transitions. Second operand has 152 states, 152 states have (on average 3.348684210526316) internal successors, (509), 150 states have internal predecessors, (509), 99 states have call successors, (101), 4 states have call predecessors, (101), 1 states have return successors, (97), 97 states have call predecessors, (97), 97 states have call successors, (97) [2022-04-05 05:24:17,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:24:17,903 INFO L93 Difference]: Finished difference Result 871 states and 1032 transitions. [2022-04-05 05:24:17,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2022-04-05 05:24:17,904 INFO L78 Accepts]: Start accepts. Automaton has has 152 states, 152 states have (on average 3.348684210526316) internal successors, (509), 150 states have internal predecessors, (509), 99 states have call successors, (101), 4 states have call predecessors, (101), 1 states have return successors, (97), 97 states have call predecessors, (97), 97 states have call successors, (97) Word has length 498 [2022-04-05 05:24:17,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:24:17,906 INFO L225 Difference]: With dead ends: 871 [2022-04-05 05:24:17,906 INFO L226 Difference]: Without dead ends: 668 [2022-04-05 05:24:17,911 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1441 GetRequests, 1093 SyntacticMatches, 1 SemanticMatches, 347 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42766 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=20199, Invalid=101253, Unknown=0, NotChecked=0, Total=121452 [2022-04-05 05:24:17,911 INFO L913 BasicCegarLoop]: 156 mSDtfsCounter, 1531 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 6499 mSolverCounterSat, 1359 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1532 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 7858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1359 IncrementalHoareTripleChecker+Valid, 6499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-04-05 05:24:17,911 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1532 Valid, 243 Invalid, 7858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1359 Valid, 6499 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-04-05 05:24:17,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2022-04-05 05:24:17,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 471. [2022-04-05 05:24:17,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 377 states have (on average 1.0106100795755968) internal successors, (381), 378 states have internal predecessors, (381), 52 states have call successors, (52), 42 states have call predecessors, (52), 41 states have return successors, (51), 50 states have call predecessors, (51), 51 states have call successors, (51) [2022-04-05 05:24:17,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 484 transitions. [2022-04-05 05:24:17,942 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 484 transitions. Word has length 498 [2022-04-05 05:24:17,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:24:17,942 INFO L478 AbstractCegarLoop]: Abstraction has 471 states and 484 transitions. [2022-04-05 05:24:17,943 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 152 states, 152 states have (on average 3.348684210526316) internal successors, (509), 150 states have internal predecessors, (509), 99 states have call successors, (101), 4 states have call predecessors, (101), 1 states have return successors, (97), 97 states have call predecessors, (97), 97 states have call successors, (97) [2022-04-05 05:24:17,943 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 484 transitions. [2022-04-05 05:24:17,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2022-04-05 05:24:17,945 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:24:17,945 INFO L499 BasicCegarLoop]: trace histogram [50, 50, 50, 50, 49, 49, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:24:17,962 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 05:24:18,145 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,SelfDestructingSolverStorable59 [2022-04-05 05:24:18,145 INFO L403 AbstractCegarLoop]: === Iteration 61 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:24:18,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:24:18,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1984922596, now seen corresponding path program 58 times [2022-04-05 05:24:18,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:24:18,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493100036] [2022-04-05 05:24:18,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:24:18,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:24:18,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:20,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:24:20,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:20,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-04-05 05:24:20,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:20,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-04-05 05:24:20,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:20,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-04-05 05:24:20,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:20,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-04-05 05:24:20,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:20,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-04-05 05:24:20,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:20,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-04-05 05:24:20,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:20,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-04-05 05:24:20,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:20,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-04-05 05:24:20,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:20,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-04-05 05:24:20,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:20,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-04-05 05:24:20,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:20,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-04-05 05:24:20,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:20,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-04-05 05:24:20,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:20,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-04-05 05:24:20,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:20,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-04-05 05:24:20,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:20,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-04-05 05:24:20,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:20,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-04-05 05:24:20,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:20,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-04-05 05:24:20,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:20,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-04-05 05:24:20,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:20,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-04-05 05:24:20,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:20,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-04-05 05:24:20,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:20,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-04-05 05:24:20,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:20,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-04-05 05:24:20,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:20,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-04-05 05:24:20,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:20,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-04-05 05:24:20,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:20,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-04-05 05:24:20,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:20,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-04-05 05:24:20,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:20,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-04-05 05:24:20,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:20,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-04-05 05:24:20,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:20,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-04-05 05:24:20,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:20,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-04-05 05:24:20,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:20,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-04-05 05:24:20,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:20,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-04-05 05:24:20,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:20,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-04-05 05:24:20,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:20,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-04-05 05:24:20,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:20,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-04-05 05:24:20,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:20,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-04-05 05:24:20,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:20,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-04-05 05:24:20,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:20,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-04-05 05:24:20,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:20,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2022-04-05 05:24:20,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:20,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2022-04-05 05:24:20,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:20,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2022-04-05 05:24:20,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:20,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2022-04-05 05:24:20,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:20,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2022-04-05 05:24:20,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:20,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2022-04-05 05:24:20,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:20,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2022-04-05 05:24:20,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:20,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2022-04-05 05:24:20,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:20,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2022-04-05 05:24:20,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:20,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2022-04-05 05:24:20,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:20,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2022-04-05 05:24:20,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:20,520 INFO L134 CoverageAnalysis]: Checked inductivity of 12054 backedges. 4756 proven. 2594 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2022-04-05 05:24:20,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:24:20,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493100036] [2022-04-05 05:24:20,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493100036] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:24:20,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096116616] [2022-04-05 05:24:20,520 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-05 05:24:20,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:24:20,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:24:20,522 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 05:24:20,522 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 05:24:20,673 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-05 05:24:20,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:24:20,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 1391 conjuncts, 102 conjunts are in the unsatisfiable core [2022-04-05 05:24:20,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:24:23,435 INFO L134 CoverageAnalysis]: Checked inductivity of 12054 backedges. 2548 proven. 4802 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2022-04-05 05:24:23,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:24:24,128 INFO L134 CoverageAnalysis]: Checked inductivity of 12054 backedges. 2548 proven. 4802 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2022-04-05 05:24:24,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096116616] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:24:24,128 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:24:24,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 54, 54] total 155 [2022-04-05 05:24:24,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415578200] [2022-04-05 05:24:24,129 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:24:24,130 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 155 states [2022-04-05 05:24:24,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:24:24,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 155 interpolants. [2022-04-05 05:24:24,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3933, Invalid=19937, Unknown=0, NotChecked=0, Total=23870 [2022-04-05 05:24:24,132 INFO L87 Difference]: Start difference. First operand 471 states and 484 transitions. Second operand has 155 states, 155 states have (on average 3.3483870967741933) internal successors, (519), 153 states have internal predecessors, (519), 101 states have call successors, (103), 4 states have call predecessors, (103), 1 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2022-04-05 05:24:32,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:24:32,056 INFO L93 Difference]: Finished difference Result 889 states and 1053 transitions. [2022-04-05 05:24:32,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 204 states. [2022-04-05 05:24:32,057 INFO L78 Accepts]: Start accepts. Automaton has has 155 states, 155 states have (on average 3.3483870967741933) internal successors, (519), 153 states have internal predecessors, (519), 101 states have call successors, (103), 4 states have call predecessors, (103), 1 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) Word has length 508 [2022-04-05 05:24:32,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:24:32,060 INFO L225 Difference]: With dead ends: 889 [2022-04-05 05:24:32,060 INFO L226 Difference]: Without dead ends: 682 [2022-04-05 05:24:32,065 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1470 GetRequests, 1115 SyntacticMatches, 1 SemanticMatches, 354 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44539 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=21011, Invalid=105369, Unknown=0, NotChecked=0, Total=126380 [2022-04-05 05:24:32,065 INFO L913 BasicCegarLoop]: 159 mSDtfsCounter, 1570 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 7005 mSolverCounterSat, 1392 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1571 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 8397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1392 IncrementalHoareTripleChecker+Valid, 7005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-04-05 05:24:32,065 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1571 Valid, 266 Invalid, 8397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1392 Valid, 7005 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-04-05 05:24:32,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2022-04-05 05:24:32,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 481. [2022-04-05 05:24:32,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 385 states have (on average 1.0103896103896104) internal successors, (389), 386 states have internal predecessors, (389), 53 states have call successors, (53), 43 states have call predecessors, (53), 42 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2022-04-05 05:24:32,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 494 transitions. [2022-04-05 05:24:32,098 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 494 transitions. Word has length 508 [2022-04-05 05:24:32,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:24:32,098 INFO L478 AbstractCegarLoop]: Abstraction has 481 states and 494 transitions. [2022-04-05 05:24:32,099 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 155 states, 155 states have (on average 3.3483870967741933) internal successors, (519), 153 states have internal predecessors, (519), 101 states have call successors, (103), 4 states have call predecessors, (103), 1 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2022-04-05 05:24:32,099 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 494 transitions. [2022-04-05 05:24:32,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2022-04-05 05:24:32,101 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:24:32,101 INFO L499 BasicCegarLoop]: trace histogram [51, 51, 51, 51, 50, 50, 50, 50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:24:32,120 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 05:24:32,301 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,SelfDestructingSolverStorable60 [2022-04-05 05:24:32,301 INFO L403 AbstractCegarLoop]: === Iteration 62 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:24:32,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:24:32,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1074422765, now seen corresponding path program 59 times [2022-04-05 05:24:32,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:24:32,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909049769] [2022-04-05 05:24:32,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:24:32,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:24:32,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:34,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:24:34,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:34,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-04-05 05:24:34,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:34,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-04-05 05:24:34,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:34,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-04-05 05:24:34,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:34,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-04-05 05:24:34,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:34,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-04-05 05:24:34,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:34,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-04-05 05:24:34,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:34,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-04-05 05:24:34,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:34,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-04-05 05:24:34,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:34,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-04-05 05:24:34,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:34,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-04-05 05:24:34,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:34,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-04-05 05:24:34,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:34,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-04-05 05:24:34,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:34,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-04-05 05:24:34,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:34,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-04-05 05:24:34,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:34,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-04-05 05:24:34,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:34,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-04-05 05:24:34,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:34,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-04-05 05:24:34,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:34,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-04-05 05:24:34,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:34,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-04-05 05:24:34,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:34,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-04-05 05:24:34,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:34,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-04-05 05:24:34,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:34,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-04-05 05:24:34,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:34,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-04-05 05:24:34,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:34,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-04-05 05:24:34,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:34,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-04-05 05:24:34,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:34,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-04-05 05:24:34,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:34,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-04-05 05:24:34,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:34,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-04-05 05:24:34,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:34,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-04-05 05:24:34,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:34,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-04-05 05:24:34,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:34,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-04-05 05:24:34,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:34,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-04-05 05:24:34,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:34,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-04-05 05:24:34,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:34,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-04-05 05:24:34,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:34,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-04-05 05:24:34,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:34,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-04-05 05:24:34,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:34,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-04-05 05:24:34,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:34,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-04-05 05:24:34,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:34,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-04-05 05:24:34,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:34,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-04-05 05:24:34,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:34,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-04-05 05:24:34,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:34,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2022-04-05 05:24:34,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:34,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2022-04-05 05:24:34,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:34,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2022-04-05 05:24:34,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:34,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2022-04-05 05:24:34,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:34,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2022-04-05 05:24:34,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:34,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2022-04-05 05:24:34,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:34,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2022-04-05 05:24:34,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:34,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2022-04-05 05:24:34,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:34,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2022-04-05 05:24:34,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:34,791 INFO L134 CoverageAnalysis]: Checked inductivity of 12550 backedges. 4953 proven. 2697 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2022-04-05 05:24:34,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:24:34,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909049769] [2022-04-05 05:24:34,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909049769] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:24:34,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035823151] [2022-04-05 05:24:34,791 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-05 05:24:34,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:24:34,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:24:34,793 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 05:24:34,794 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 05:24:35,019 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 51 check-sat command(s) [2022-04-05 05:24:35,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:24:35,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 1418 conjuncts, 104 conjunts are in the unsatisfiable core [2022-04-05 05:24:35,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:24:38,658 INFO L134 CoverageAnalysis]: Checked inductivity of 12550 backedges. 5100 proven. 2550 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2022-04-05 05:24:38,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:24:39,351 INFO L134 CoverageAnalysis]: Checked inductivity of 12550 backedges. 5100 proven. 2550 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2022-04-05 05:24:39,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035823151] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:24:39,351 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:24:39,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 104, 104] total 158 [2022-04-05 05:24:39,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656875827] [2022-04-05 05:24:39,352 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:24:39,353 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 158 states [2022-04-05 05:24:39,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:24:39,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants. [2022-04-05 05:24:39,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5517, Invalid=19289, Unknown=0, NotChecked=0, Total=24806 [2022-04-05 05:24:39,355 INFO L87 Difference]: Start difference. First operand 481 states and 494 transitions. Second operand has 158 states, 158 states have (on average 2.689873417721519) internal successors, (425), 157 states have internal predecessors, (425), 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 05:24:43,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:24:43,703 INFO L93 Difference]: Finished difference Result 898 states and 1064 transitions. [2022-04-05 05:24:43,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-04-05 05:24:43,703 INFO L78 Accepts]: Start accepts. Automaton has has 158 states, 158 states have (on average 2.689873417721519) internal successors, (425), 157 states have internal predecessors, (425), 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 518 [2022-04-05 05:24:43,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:24:43,705 INFO L225 Difference]: With dead ends: 898 [2022-04-05 05:24:43,705 INFO L226 Difference]: Without dead ends: 687 [2022-04-05 05:24:43,710 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1394 GetRequests, 1136 SyntacticMatches, 0 SemanticMatches, 258 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18495 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=14954, Invalid=52386, Unknown=0, NotChecked=0, Total=67340 [2022-04-05 05:24:43,710 INFO L913 BasicCegarLoop]: 114 mSDtfsCounter, 1036 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 3200 mSolverCounterSat, 613 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1037 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 3813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 613 IncrementalHoareTripleChecker+Valid, 3200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-04-05 05:24:43,710 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1037 Valid, 166 Invalid, 3813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [613 Valid, 3200 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-04-05 05:24:43,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2022-04-05 05:24:43,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 483. [2022-04-05 05:24:43,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 387 states have (on average 1.0103359173126616) internal successors, (391), 388 states have internal predecessors, (391), 53 states have call successors, (53), 43 states have call predecessors, (53), 42 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2022-04-05 05:24:43,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 496 transitions. [2022-04-05 05:24:43,744 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 496 transitions. Word has length 518 [2022-04-05 05:24:43,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:24:43,744 INFO L478 AbstractCegarLoop]: Abstraction has 483 states and 496 transitions. [2022-04-05 05:24:43,744 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 158 states, 158 states have (on average 2.689873417721519) internal successors, (425), 157 states have internal predecessors, (425), 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 05:24:43,744 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 496 transitions. [2022-04-05 05:24:43,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2022-04-05 05:24:43,760 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:24:43,760 INFO L499 BasicCegarLoop]: trace histogram [52, 51, 51, 51, 51, 50, 50, 50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:24:43,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2022-04-05 05:24:43,960 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2022-04-05 05:24:43,960 INFO L403 AbstractCegarLoop]: === Iteration 63 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:24:43,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:24:43,961 INFO L85 PathProgramCache]: Analyzing trace with hash 739179702, now seen corresponding path program 60 times [2022-04-05 05:24:43,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:24:43,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104783447] [2022-04-05 05:24:43,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:24:43,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:24:44,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:44,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:24:44,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:44,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-04-05 05:24:44,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:44,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-04-05 05:24:44,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:44,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-04-05 05:24:44,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:44,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-04-05 05:24:44,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:44,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-04-05 05:24:44,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:44,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-04-05 05:24:44,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:44,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-04-05 05:24:44,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:44,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-04-05 05:24:44,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:44,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-04-05 05:24:44,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:44,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-04-05 05:24:44,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:44,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-04-05 05:24:44,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:44,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-04-05 05:24:44,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:44,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-04-05 05:24:44,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:44,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-04-05 05:24:44,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:44,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-04-05 05:24:44,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:44,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-04-05 05:24:44,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:44,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-04-05 05:24:44,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:44,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-04-05 05:24:44,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:44,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-04-05 05:24:44,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:44,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-04-05 05:24:44,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:44,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-04-05 05:24:44,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:44,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-04-05 05:24:44,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:44,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-04-05 05:24:44,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:44,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-04-05 05:24:44,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:44,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-04-05 05:24:44,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:44,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-04-05 05:24:44,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:44,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-04-05 05:24:44,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:44,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-04-05 05:24:44,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:44,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-04-05 05:24:44,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:44,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-04-05 05:24:44,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:44,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-04-05 05:24:44,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:44,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-04-05 05:24:44,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:44,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-04-05 05:24:44,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:44,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-04-05 05:24:44,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:44,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-04-05 05:24:44,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:44,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-04-05 05:24:44,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:44,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-04-05 05:24:44,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:44,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-04-05 05:24:44,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:44,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2022-04-05 05:24:44,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:44,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2022-04-05 05:24:44,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:44,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2022-04-05 05:24:44,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:44,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2022-04-05 05:24:44,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:44,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2022-04-05 05:24:44,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:44,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2022-04-05 05:24:44,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:44,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2022-04-05 05:24:44,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:44,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2022-04-05 05:24:44,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:44,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2022-04-05 05:24:44,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:44,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 492 [2022-04-05 05:24:44,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:44,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 500 [2022-04-05 05:24:44,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:44,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2022-04-05 05:24:44,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:45,001 INFO L134 CoverageAnalysis]: Checked inductivity of 12652 backedges. 2650 proven. 5102 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2022-04-05 05:24:45,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:24:45,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104783447] [2022-04-05 05:24:45,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104783447] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:24:45,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872160827] [2022-04-05 05:24:45,002 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-05 05:24:45,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:24:45,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:24:45,003 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 05:24:45,004 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 05:24:45,256 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 52 check-sat command(s) [2022-04-05 05:24:45,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:24:45,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 1428 conjuncts, 105 conjunts are in the unsatisfiable core [2022-04-05 05:24:45,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:24:45,939 INFO L134 CoverageAnalysis]: Checked inductivity of 12652 backedges. 2752 proven. 5000 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2022-04-05 05:24:45,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:24:46,646 INFO L134 CoverageAnalysis]: Checked inductivity of 12652 backedges. 2752 proven. 5000 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2022-04-05 05:24:46,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872160827] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:24:46,646 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:24:46,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 56, 56] total 61 [2022-04-05 05:24:46,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133494724] [2022-04-05 05:24:46,646 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:24:46,647 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-04-05 05:24:46,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:24:46,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-04-05 05:24:46,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1501, Invalid=2159, Unknown=0, NotChecked=0, Total=3660 [2022-04-05 05:24:46,648 INFO L87 Difference]: Start difference. First operand 483 states and 496 transitions. Second operand has 61 states, 61 states have (on average 4.770491803278689) internal successors, (291), 58 states have internal predecessors, (291), 53 states have call successors, (57), 4 states have call predecessors, (57), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-04-05 05:24:48,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:24:48,029 INFO L93 Difference]: Finished difference Result 502 states and 517 transitions. [2022-04-05 05:24:48,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-04-05 05:24:48,030 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 4.770491803278689) internal successors, (291), 58 states have internal predecessors, (291), 53 states have call successors, (57), 4 states have call predecessors, (57), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) Word has length 520 [2022-04-05 05:24:48,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:24:48,032 INFO L225 Difference]: With dead ends: 502 [2022-04-05 05:24:48,032 INFO L226 Difference]: Without dead ends: 500 [2022-04-05 05:24:48,033 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1305 GetRequests, 1188 SyntacticMatches, 1 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2562 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=4495, Invalid=9311, Unknown=0, NotChecked=0, Total=13806 [2022-04-05 05:24:48,034 INFO L913 BasicCegarLoop]: 72 mSDtfsCounter, 255 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1592 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 1916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 1592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-05 05:24:48,034 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [256 Valid, 124 Invalid, 1916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 1592 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-05 05:24:48,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2022-04-05 05:24:48,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 495. [2022-04-05 05:24:48,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 396 states have (on average 1.0101010101010102) internal successors, (400), 397 states have internal predecessors, (400), 55 states have call successors, (55), 44 states have call predecessors, (55), 43 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2022-04-05 05:24:48,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 509 transitions. [2022-04-05 05:24:48,068 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 509 transitions. Word has length 520 [2022-04-05 05:24:48,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:24:48,069 INFO L478 AbstractCegarLoop]: Abstraction has 495 states and 509 transitions. [2022-04-05 05:24:48,069 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 4.770491803278689) internal successors, (291), 58 states have internal predecessors, (291), 53 states have call successors, (57), 4 states have call predecessors, (57), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-04-05 05:24:48,069 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 509 transitions. [2022-04-05 05:24:48,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2022-04-05 05:24:48,071 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:24:48,071 INFO L499 BasicCegarLoop]: trace histogram [53, 53, 53, 52, 52, 52, 52, 52, 52, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:24:48,094 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 05:24:48,289 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:24:48,290 INFO L403 AbstractCegarLoop]: === Iteration 64 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:24:48,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:24:48,290 INFO L85 PathProgramCache]: Analyzing trace with hash 518560222, now seen corresponding path program 61 times [2022-04-05 05:24:48,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:24:48,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181182471] [2022-04-05 05:24:48,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:24:48,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:24:48,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:50,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:24:50,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:50,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-04-05 05:24:50,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:50,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-04-05 05:24:50,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:50,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-04-05 05:24:50,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:50,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-04-05 05:24:50,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:50,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-04-05 05:24:50,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:50,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-04-05 05:24:50,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:50,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-04-05 05:24:50,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:50,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-04-05 05:24:50,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:50,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-04-05 05:24:50,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:50,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-04-05 05:24:50,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:50,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-04-05 05:24:50,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:50,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-04-05 05:24:50,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:50,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-04-05 05:24:50,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:50,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-04-05 05:24:50,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:50,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-04-05 05:24:50,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:50,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-04-05 05:24:50,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:50,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-04-05 05:24:50,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:50,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-04-05 05:24:50,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:50,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-04-05 05:24:50,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:50,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-04-05 05:24:50,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:50,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-04-05 05:24:50,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:50,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-04-05 05:24:50,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:50,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-04-05 05:24:50,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:50,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-04-05 05:24:50,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:50,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-04-05 05:24:50,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:50,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-04-05 05:24:50,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:50,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-04-05 05:24:50,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:50,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-04-05 05:24:50,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:50,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-04-05 05:24:50,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:50,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-04-05 05:24:50,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:50,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-04-05 05:24:50,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:50,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-04-05 05:24:50,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:50,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-04-05 05:24:50,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:50,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-04-05 05:24:50,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:50,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-04-05 05:24:50,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:50,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-04-05 05:24:50,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:50,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-04-05 05:24:50,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:50,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-04-05 05:24:50,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:50,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2022-04-05 05:24:50,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:50,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2022-04-05 05:24:50,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:50,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2022-04-05 05:24:50,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:50,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2022-04-05 05:24:50,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:50,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2022-04-05 05:24:50,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:50,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2022-04-05 05:24:50,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:50,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2022-04-05 05:24:50,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:50,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2022-04-05 05:24:50,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:50,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2022-04-05 05:24:50,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:50,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 492 [2022-04-05 05:24:50,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:50,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 500 [2022-04-05 05:24:50,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:50,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2022-04-05 05:24:50,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:50,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2022-04-05 05:24:50,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:50,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 524 [2022-04-05 05:24:50,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:50,965 INFO L134 CoverageAnalysis]: Checked inductivity of 13468 backedges. 5359 proven. 2805 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2022-04-05 05:24:50,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:24:50,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181182471] [2022-04-05 05:24:50,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181182471] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:24:50,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652168612] [2022-04-05 05:24:50,965 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-05 05:24:50,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:24:50,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:24:50,966 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 05:24:50,967 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 05:24:51,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:24:51,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 1462 conjuncts, 106 conjunts are in the unsatisfiable core [2022-04-05 05:24:51,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:24:54,943 INFO L134 CoverageAnalysis]: Checked inductivity of 13468 backedges. 5712 proven. 2652 refuted. 0 times theorem prover too weak. 5104 trivial. 0 not checked. [2022-04-05 05:24:54,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:24:55,632 INFO L134 CoverageAnalysis]: Checked inductivity of 13468 backedges. 5510 proven. 2652 refuted. 0 times theorem prover too weak. 5306 trivial. 0 not checked. [2022-04-05 05:24:55,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652168612] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:24:55,633 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:24:55,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 106, 106] total 162 [2022-04-05 05:24:55,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278919020] [2022-04-05 05:24:55,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:24:55,634 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 162 states [2022-04-05 05:24:55,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:24:55,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 162 interpolants. [2022-04-05 05:24:55,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5783, Invalid=20299, Unknown=0, NotChecked=0, Total=26082 [2022-04-05 05:24:55,636 INFO L87 Difference]: Start difference. First operand 495 states and 509 transitions. Second operand has 162 states, 162 states have (on average 2.7222222222222223) internal successors, (441), 161 states have internal predecessors, (441), 106 states have call successors, (109), 3 states have call predecessors, (109), 2 states have return successors, (107), 106 states have call predecessors, (107), 106 states have call successors, (107) [2022-04-05 05:25:00,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:25:00,292 INFO L93 Difference]: Finished difference Result 926 states and 1096 transitions. [2022-04-05 05:25:00,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2022-04-05 05:25:00,292 INFO L78 Accepts]: Start accepts. Automaton has has 162 states, 162 states have (on average 2.7222222222222223) internal successors, (441), 161 states have internal predecessors, (441), 106 states have call successors, (109), 3 states have call predecessors, (109), 2 states have return successors, (107), 106 states have call predecessors, (107), 106 states have call successors, (107) Word has length 536 [2022-04-05 05:25:00,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:25:00,294 INFO L225 Difference]: With dead ends: 926 [2022-04-05 05:25:00,294 INFO L226 Difference]: Without dead ends: 705 [2022-04-05 05:25:00,298 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1440 GetRequests, 1176 SyntacticMatches, 0 SemanticMatches, 264 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19431 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=15587, Invalid=54903, Unknown=0, NotChecked=0, Total=70490 [2022-04-05 05:25:00,298 INFO L913 BasicCegarLoop]: 116 mSDtfsCounter, 1116 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 3354 mSolverCounterSat, 813 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1117 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 4167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 813 IncrementalHoareTripleChecker+Valid, 3354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-04-05 05:25:00,307 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1117 Valid, 188 Invalid, 4167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [813 Valid, 3354 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-04-05 05:25:00,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2022-04-05 05:25:00,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 497. [2022-04-05 05:25:00,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 398 states have (on average 1.0100502512562815) internal successors, (402), 399 states have internal predecessors, (402), 55 states have call successors, (55), 44 states have call predecessors, (55), 43 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2022-04-05 05:25:00,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 511 transitions. [2022-04-05 05:25:00,357 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 511 transitions. Word has length 536 [2022-04-05 05:25:00,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:25:00,357 INFO L478 AbstractCegarLoop]: Abstraction has 497 states and 511 transitions. [2022-04-05 05:25:00,357 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 162 states, 162 states have (on average 2.7222222222222223) internal successors, (441), 161 states have internal predecessors, (441), 106 states have call successors, (109), 3 states have call predecessors, (109), 2 states have return successors, (107), 106 states have call predecessors, (107), 106 states have call successors, (107) [2022-04-05 05:25:00,357 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 511 transitions. [2022-04-05 05:25:00,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 539 [2022-04-05 05:25:00,360 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:25:00,360 INFO L499 BasicCegarLoop]: trace histogram [53, 53, 53, 53, 52, 52, 52, 52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:25:00,377 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2022-04-05 05:25:00,560 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:25:00,560 INFO L403 AbstractCegarLoop]: === Iteration 65 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:25:00,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:25:00,561 INFO L85 PathProgramCache]: Analyzing trace with hash -286902335, now seen corresponding path program 62 times [2022-04-05 05:25:00,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:25:00,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612340764] [2022-04-05 05:25:00,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:25:00,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:25:00,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:03,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:25:03,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:03,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-04-05 05:25:03,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:03,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-04-05 05:25:03,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:03,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-04-05 05:25:03,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:03,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-04-05 05:25:03,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:03,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-04-05 05:25:03,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:03,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-04-05 05:25:03,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:03,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-04-05 05:25:03,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:03,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-04-05 05:25:03,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:03,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-04-05 05:25:03,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:03,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-04-05 05:25:03,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:03,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-04-05 05:25:03,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:03,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-04-05 05:25:03,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:03,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-04-05 05:25:03,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:03,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-04-05 05:25:03,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:03,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-04-05 05:25:03,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:03,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-04-05 05:25:03,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:03,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-04-05 05:25:03,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:03,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-04-05 05:25:03,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:03,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-04-05 05:25:03,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:03,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-04-05 05:25:03,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:03,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-04-05 05:25:03,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:03,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-04-05 05:25:03,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:03,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-04-05 05:25:03,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:03,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-04-05 05:25:03,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:03,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-04-05 05:25:03,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:03,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-04-05 05:25:03,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:03,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-04-05 05:25:03,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:03,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-04-05 05:25:03,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:03,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-04-05 05:25:03,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:03,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-04-05 05:25:03,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:03,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-04-05 05:25:03,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:03,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-04-05 05:25:03,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:03,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-04-05 05:25:03,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:03,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-04-05 05:25:03,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:03,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-04-05 05:25:03,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:03,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-04-05 05:25:03,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:03,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-04-05 05:25:03,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:03,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-04-05 05:25:03,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:03,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-04-05 05:25:03,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:03,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-04-05 05:25:03,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:03,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-04-05 05:25:03,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:03,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2022-04-05 05:25:03,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:03,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2022-04-05 05:25:03,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:03,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2022-04-05 05:25:03,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:03,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2022-04-05 05:25:03,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:03,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2022-04-05 05:25:03,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:03,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2022-04-05 05:25:03,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:03,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2022-04-05 05:25:03,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:03,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2022-04-05 05:25:03,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:03,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 510 [2022-04-05 05:25:03,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:03,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 518 [2022-04-05 05:25:03,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:03,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2022-04-05 05:25:03,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:03,250 INFO L134 CoverageAnalysis]: Checked inductivity of 13572 backedges. 5359 proven. 2909 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2022-04-05 05:25:03,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:25:03,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612340764] [2022-04-05 05:25:03,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612340764] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:25:03,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597201688] [2022-04-05 05:25:03,250 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 05:25:03,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:25:03,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:25:03,251 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 05:25:03,252 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 05:25:03,399 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 05:25:03,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:25:03,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 1472 conjuncts, 108 conjunts are in the unsatisfiable core [2022-04-05 05:25:03,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:25:06,488 INFO L134 CoverageAnalysis]: Checked inductivity of 13572 backedges. 2860 proven. 5408 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2022-04-05 05:25:06,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:25:07,215 INFO L134 CoverageAnalysis]: Checked inductivity of 13572 backedges. 2860 proven. 5408 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2022-04-05 05:25:07,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597201688] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:25:07,216 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:25:07,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 57, 57] total 164 [2022-04-05 05:25:07,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423230144] [2022-04-05 05:25:07,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:25:07,217 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 164 states [2022-04-05 05:25:07,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:25:07,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2022-04-05 05:25:07,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4407, Invalid=22325, Unknown=0, NotChecked=0, Total=26732 [2022-04-05 05:25:07,219 INFO L87 Difference]: Start difference. First operand 497 states and 511 transitions. Second operand has 164 states, 164 states have (on average 3.347560975609756) internal successors, (549), 162 states have internal predecessors, (549), 107 states have call successors, (109), 4 states have call predecessors, (109), 1 states have return successors, (105), 105 states have call predecessors, (105), 105 states have call successors, (105) [2022-04-05 05:25:15,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:25:15,529 INFO L93 Difference]: Finished difference Result 939 states and 1113 transitions. [2022-04-05 05:25:15,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 216 states. [2022-04-05 05:25:15,530 INFO L78 Accepts]: Start accepts. Automaton has has 164 states, 164 states have (on average 3.347560975609756) internal successors, (549), 162 states have internal predecessors, (549), 107 states have call successors, (109), 4 states have call predecessors, (109), 1 states have return successors, (105), 105 states have call predecessors, (105), 105 states have call successors, (105) Word has length 538 [2022-04-05 05:25:15,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:25:15,532 INFO L225 Difference]: With dead ends: 939 [2022-04-05 05:25:15,532 INFO L226 Difference]: Without dead ends: 720 [2022-04-05 05:25:15,541 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1557 GetRequests, 1181 SyntacticMatches, 1 SemanticMatches, 375 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50074 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=23543, Invalid=118209, Unknown=0, NotChecked=0, Total=141752 [2022-04-05 05:25:15,541 INFO L913 BasicCegarLoop]: 168 mSDtfsCounter, 1795 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 6601 mSolverCounterSat, 1546 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1796 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 8147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1546 IncrementalHoareTripleChecker+Valid, 6601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-04-05 05:25:15,541 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1796 Valid, 255 Invalid, 8147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1546 Valid, 6601 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-04-05 05:25:15,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2022-04-05 05:25:15,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 507. [2022-04-05 05:25:15,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 406 states have (on average 1.0098522167487685) internal successors, (410), 407 states have internal predecessors, (410), 56 states have call successors, (56), 45 states have call predecessors, (56), 44 states have return successors, (55), 54 states have call predecessors, (55), 55 states have call successors, (55) [2022-04-05 05:25:15,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 521 transitions. [2022-04-05 05:25:15,580 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 521 transitions. Word has length 538 [2022-04-05 05:25:15,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:25:15,580 INFO L478 AbstractCegarLoop]: Abstraction has 507 states and 521 transitions. [2022-04-05 05:25:15,581 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 164 states, 164 states have (on average 3.347560975609756) internal successors, (549), 162 states have internal predecessors, (549), 107 states have call successors, (109), 4 states have call predecessors, (109), 1 states have return successors, (105), 105 states have call predecessors, (105), 105 states have call successors, (105) [2022-04-05 05:25:15,581 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 521 transitions. [2022-04-05 05:25:15,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2022-04-05 05:25:15,583 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:25:15,583 INFO L499 BasicCegarLoop]: trace histogram [54, 54, 54, 54, 53, 53, 53, 53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:25:15,605 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 05:25:15,800 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2022-04-05 05:25:15,801 INFO L403 AbstractCegarLoop]: === Iteration 66 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:25:15,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:25:15,801 INFO L85 PathProgramCache]: Analyzing trace with hash 844403576, now seen corresponding path program 63 times [2022-04-05 05:25:15,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:25:15,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459560022] [2022-04-05 05:25:15,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:25:15,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:25:15,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:18,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:25:18,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:18,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-04-05 05:25:18,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:18,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-04-05 05:25:18,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:18,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-04-05 05:25:18,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:18,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-04-05 05:25:18,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:18,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-04-05 05:25:18,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:18,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-04-05 05:25:18,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:18,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-04-05 05:25:18,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:18,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-04-05 05:25:18,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:18,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-04-05 05:25:18,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:18,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-04-05 05:25:18,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:18,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-04-05 05:25:18,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:18,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-04-05 05:25:18,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:18,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-04-05 05:25:18,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:18,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-04-05 05:25:18,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:18,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-04-05 05:25:18,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:18,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-04-05 05:25:18,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:18,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-04-05 05:25:18,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:18,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-04-05 05:25:18,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:18,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-04-05 05:25:18,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:18,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-04-05 05:25:18,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:18,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-04-05 05:25:18,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:18,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-04-05 05:25:18,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:18,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-04-05 05:25:18,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:18,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-04-05 05:25:18,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:18,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-04-05 05:25:18,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:18,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-04-05 05:25:18,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:18,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-04-05 05:25:18,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:18,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-04-05 05:25:18,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:18,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-04-05 05:25:18,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:18,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-04-05 05:25:18,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:18,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-04-05 05:25:18,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:18,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-04-05 05:25:18,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:18,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-04-05 05:25:18,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:18,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-04-05 05:25:18,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:18,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-04-05 05:25:18,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:18,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-04-05 05:25:18,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:18,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-04-05 05:25:18,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:18,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2022-04-05 05:25:18,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:18,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2022-04-05 05:25:18,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:18,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2022-04-05 05:25:18,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:18,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2022-04-05 05:25:18,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:18,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2022-04-05 05:25:18,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:18,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2022-04-05 05:25:18,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:18,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2022-04-05 05:25:18,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:18,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2022-04-05 05:25:18,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:18,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2022-04-05 05:25:18,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:18,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2022-04-05 05:25:18,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:18,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2022-04-05 05:25:18,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:18,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2022-04-05 05:25:18,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:18,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 512 [2022-04-05 05:25:18,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:18,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 520 [2022-04-05 05:25:18,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:18,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 528 [2022-04-05 05:25:18,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:18,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 536 [2022-04-05 05:25:18,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:18,717 INFO L134 CoverageAnalysis]: Checked inductivity of 14098 backedges. 5568 proven. 3018 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2022-04-05 05:25:18,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:25:18,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459560022] [2022-04-05 05:25:18,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459560022] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:25:18,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475875859] [2022-04-05 05:25:18,717 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-05 05:25:18,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:25:18,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:25:18,718 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 05:25:18,719 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 05:25:18,970 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 54 check-sat command(s) [2022-04-05 05:25:18,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:25:18,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 1499 conjuncts, 110 conjunts are in the unsatisfiable core [2022-04-05 05:25:18,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:25:22,337 INFO L134 CoverageAnalysis]: Checked inductivity of 14098 backedges. 2968 proven. 5618 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2022-04-05 05:25:22,337 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:25:23,066 INFO L134 CoverageAnalysis]: Checked inductivity of 14098 backedges. 2968 proven. 5618 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2022-04-05 05:25:23,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475875859] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:25:23,066 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:25:23,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 58, 58] total 167 [2022-04-05 05:25:23,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485688816] [2022-04-05 05:25:23,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:25:23,067 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 167 states [2022-04-05 05:25:23,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:25:23,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 167 interpolants. [2022-04-05 05:25:23,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4571, Invalid=23151, Unknown=0, NotChecked=0, Total=27722 [2022-04-05 05:25:23,069 INFO L87 Difference]: Start difference. First operand 507 states and 521 transitions. Second operand has 167 states, 167 states have (on average 3.3473053892215567) internal successors, (559), 165 states have internal predecessors, (559), 109 states have call successors, (111), 4 states have call predecessors, (111), 1 states have return successors, (107), 107 states have call predecessors, (107), 107 states have call successors, (107) [2022-04-05 05:25:31,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:25:31,618 INFO L93 Difference]: Finished difference Result 957 states and 1134 transitions. [2022-04-05 05:25:31,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 220 states. [2022-04-05 05:25:31,618 INFO L78 Accepts]: Start accepts. Automaton has has 167 states, 167 states have (on average 3.3473053892215567) internal successors, (559), 165 states have internal predecessors, (559), 109 states have call successors, (111), 4 states have call predecessors, (111), 1 states have return successors, (107), 107 states have call predecessors, (107), 107 states have call successors, (107) Word has length 548 [2022-04-05 05:25:31,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:25:31,620 INFO L225 Difference]: With dead ends: 957 [2022-04-05 05:25:31,620 INFO L226 Difference]: Without dead ends: 734 [2022-04-05 05:25:31,628 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1586 GetRequests, 1203 SyntacticMatches, 1 SemanticMatches, 382 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51991 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=24419, Invalid=122653, Unknown=0, NotChecked=0, Total=147072 [2022-04-05 05:25:31,628 INFO L913 BasicCegarLoop]: 171 mSDtfsCounter, 2022 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 6767 mSolverCounterSat, 2004 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2023 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 8771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2004 IncrementalHoareTripleChecker+Valid, 6767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-04-05 05:25:31,628 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2023 Valid, 253 Invalid, 8771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2004 Valid, 6767 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-04-05 05:25:31,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2022-04-05 05:25:31,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 517. [2022-04-05 05:25:31,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 414 states have (on average 1.0096618357487923) internal successors, (418), 415 states have internal predecessors, (418), 57 states have call successors, (57), 46 states have call predecessors, (57), 45 states have return successors, (56), 55 states have call predecessors, (56), 56 states have call successors, (56) [2022-04-05 05:25:31,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 531 transitions. [2022-04-05 05:25:31,666 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 531 transitions. Word has length 548 [2022-04-05 05:25:31,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:25:31,666 INFO L478 AbstractCegarLoop]: Abstraction has 517 states and 531 transitions. [2022-04-05 05:25:31,666 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 167 states, 167 states have (on average 3.3473053892215567) internal successors, (559), 165 states have internal predecessors, (559), 109 states have call successors, (111), 4 states have call predecessors, (111), 1 states have return successors, (107), 107 states have call predecessors, (107), 107 states have call successors, (107) [2022-04-05 05:25:31,666 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 531 transitions. [2022-04-05 05:25:31,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 559 [2022-04-05 05:25:31,669 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:25:31,669 INFO L499 BasicCegarLoop]: trace histogram [55, 55, 55, 55, 54, 54, 54, 54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:25:31,688 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 05:25:31,869 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,SelfDestructingSolverStorable65 [2022-04-05 05:25:31,869 INFO L403 AbstractCegarLoop]: === Iteration 67 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:25:31,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:25:31,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1638545519, now seen corresponding path program 64 times [2022-04-05 05:25:31,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:25:31,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679903128] [2022-04-05 05:25:31,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:25:31,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:25:31,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:34,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:25:34,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:34,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-04-05 05:25:34,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:34,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-04-05 05:25:34,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:34,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-04-05 05:25:34,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:34,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-04-05 05:25:34,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:34,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-04-05 05:25:34,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:34,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-04-05 05:25:34,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:34,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-04-05 05:25:34,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:34,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-04-05 05:25:34,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:34,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-04-05 05:25:34,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:34,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-04-05 05:25:34,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:34,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-04-05 05:25:34,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:34,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-04-05 05:25:34,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:34,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-04-05 05:25:34,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:34,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-04-05 05:25:34,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:34,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-04-05 05:25:34,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:34,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-04-05 05:25:34,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:34,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-04-05 05:25:34,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:34,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-04-05 05:25:34,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:34,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-04-05 05:25:34,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:34,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-04-05 05:25:34,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:34,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-04-05 05:25:34,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:34,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-04-05 05:25:34,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:34,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-04-05 05:25:34,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:34,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-04-05 05:25:34,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:34,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-04-05 05:25:34,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:34,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-04-05 05:25:34,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:34,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-04-05 05:25:34,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:34,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-04-05 05:25:34,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:34,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-04-05 05:25:34,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:34,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-04-05 05:25:34,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:34,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-04-05 05:25:34,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:34,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-04-05 05:25:34,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:34,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-04-05 05:25:34,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:34,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-04-05 05:25:34,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:34,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-04-05 05:25:34,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:34,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-04-05 05:25:34,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:34,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-04-05 05:25:34,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:34,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-04-05 05:25:34,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:34,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-04-05 05:25:34,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:34,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-04-05 05:25:34,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:34,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2022-04-05 05:25:34,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:34,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2022-04-05 05:25:34,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:34,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2022-04-05 05:25:34,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:34,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2022-04-05 05:25:34,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:34,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2022-04-05 05:25:34,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:34,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2022-04-05 05:25:34,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:34,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2022-04-05 05:25:34,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:34,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2022-04-05 05:25:34,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:34,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2022-04-05 05:25:34,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:34,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2022-04-05 05:25:34,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:34,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 522 [2022-04-05 05:25:34,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:34,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 530 [2022-04-05 05:25:34,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:34,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2022-04-05 05:25:34,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:34,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 546 [2022-04-05 05:25:34,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:34,705 INFO L134 CoverageAnalysis]: Checked inductivity of 14634 backedges. 5781 proven. 3129 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2022-04-05 05:25:34,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:25:34,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679903128] [2022-04-05 05:25:34,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679903128] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:25:34,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866280024] [2022-04-05 05:25:34,705 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-05 05:25:34,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:25:34,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:25:34,706 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 05:25:34,707 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 05:25:34,865 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-05 05:25:34,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:25:34,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 1526 conjuncts, 112 conjunts are in the unsatisfiable core [2022-04-05 05:25:34,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:25:38,116 INFO L134 CoverageAnalysis]: Checked inductivity of 14634 backedges. 3078 proven. 5832 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2022-04-05 05:25:38,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:25:38,861 INFO L134 CoverageAnalysis]: Checked inductivity of 14634 backedges. 3078 proven. 5832 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2022-04-05 05:25:38,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [866280024] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:25:38,862 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:25:38,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 59, 59] total 170 [2022-04-05 05:25:38,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803391016] [2022-04-05 05:25:38,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:25:38,863 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 170 states [2022-04-05 05:25:38,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:25:38,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 170 interpolants. [2022-04-05 05:25:38,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4738, Invalid=23992, Unknown=0, NotChecked=0, Total=28730 [2022-04-05 05:25:38,865 INFO L87 Difference]: Start difference. First operand 517 states and 531 transitions. Second operand has 170 states, 170 states have (on average 3.347058823529412) internal successors, (569), 168 states have internal predecessors, (569), 111 states have call successors, (113), 4 states have call predecessors, (113), 1 states have return successors, (109), 109 states have call predecessors, (109), 109 states have call successors, (109) [2022-04-05 05:25:47,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:25:47,537 INFO L93 Difference]: Finished difference Result 975 states and 1155 transitions. [2022-04-05 05:25:47,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 224 states. [2022-04-05 05:25:47,537 INFO L78 Accepts]: Start accepts. Automaton has has 170 states, 170 states have (on average 3.347058823529412) internal successors, (569), 168 states have internal predecessors, (569), 111 states have call successors, (113), 4 states have call predecessors, (113), 1 states have return successors, (109), 109 states have call predecessors, (109), 109 states have call successors, (109) Word has length 558 [2022-04-05 05:25:47,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:25:47,539 INFO L225 Difference]: With dead ends: 975 [2022-04-05 05:25:47,539 INFO L226 Difference]: Without dead ends: 748 [2022-04-05 05:25:47,549 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1615 GetRequests, 1225 SyntacticMatches, 1 SemanticMatches, 389 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53944 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=25311, Invalid=127179, Unknown=0, NotChecked=0, Total=152490 [2022-04-05 05:25:47,549 INFO L913 BasicCegarLoop]: 174 mSDtfsCounter, 2161 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 6929 mSolverCounterSat, 1692 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2162 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 8621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1692 IncrementalHoareTripleChecker+Valid, 6929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-04-05 05:25:47,549 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2162 Valid, 256 Invalid, 8621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1692 Valid, 6929 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-04-05 05:25:47,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2022-04-05 05:25:47,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 527. [2022-04-05 05:25:47,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 422 states have (on average 1.009478672985782) internal successors, (426), 423 states have internal predecessors, (426), 58 states have call successors, (58), 47 states have call predecessors, (58), 46 states have return successors, (57), 56 states have call predecessors, (57), 57 states have call successors, (57) [2022-04-05 05:25:47,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 541 transitions. [2022-04-05 05:25:47,588 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 541 transitions. Word has length 558 [2022-04-05 05:25:47,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:25:47,588 INFO L478 AbstractCegarLoop]: Abstraction has 527 states and 541 transitions. [2022-04-05 05:25:47,589 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 170 states, 170 states have (on average 3.347058823529412) internal successors, (569), 168 states have internal predecessors, (569), 111 states have call successors, (113), 4 states have call predecessors, (113), 1 states have return successors, (109), 109 states have call predecessors, (109), 109 states have call successors, (109) [2022-04-05 05:25:47,589 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 541 transitions. [2022-04-05 05:25:47,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 569 [2022-04-05 05:25:47,617 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:25:47,617 INFO L499 BasicCegarLoop]: trace histogram [56, 56, 56, 56, 55, 55, 55, 55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:25:47,637 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 05:25:47,817 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:25:47,818 INFO L403 AbstractCegarLoop]: === Iteration 68 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:25:47,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:25:47,818 INFO L85 PathProgramCache]: Analyzing trace with hash 736794278, now seen corresponding path program 65 times [2022-04-05 05:25:47,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:25:47,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300565803] [2022-04-05 05:25:47,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:25:47,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:25:47,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:50,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:25:50,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:50,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-04-05 05:25:50,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:50,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-04-05 05:25:50,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:50,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-04-05 05:25:50,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:50,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-04-05 05:25:50,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:50,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-04-05 05:25:50,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:50,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-04-05 05:25:50,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:50,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-04-05 05:25:50,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:50,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-04-05 05:25:50,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:50,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-04-05 05:25:50,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:50,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-04-05 05:25:50,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:50,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-04-05 05:25:50,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:50,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-04-05 05:25:50,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:50,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-04-05 05:25:50,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:50,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-04-05 05:25:50,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:50,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-04-05 05:25:50,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:50,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-04-05 05:25:50,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:50,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-04-05 05:25:50,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:50,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-04-05 05:25:50,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:50,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-04-05 05:25:50,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:50,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-04-05 05:25:50,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:50,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-04-05 05:25:50,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:50,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-04-05 05:25:50,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:50,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-04-05 05:25:50,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:50,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-04-05 05:25:50,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:50,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-04-05 05:25:50,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:50,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-04-05 05:25:50,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:50,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-04-05 05:25:50,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:50,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-04-05 05:25:50,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:50,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-04-05 05:25:50,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:50,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-04-05 05:25:50,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:50,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-04-05 05:25:50,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:50,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-04-05 05:25:50,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:50,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-04-05 05:25:50,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:50,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-04-05 05:25:50,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:50,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-04-05 05:25:50,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:50,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-04-05 05:25:50,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:50,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-04-05 05:25:50,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:50,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2022-04-05 05:25:50,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:50,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2022-04-05 05:25:50,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:50,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2022-04-05 05:25:50,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:50,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2022-04-05 05:25:50,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:50,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2022-04-05 05:25:50,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:50,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2022-04-05 05:25:50,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:50,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2022-04-05 05:25:50,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:50,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2022-04-05 05:25:50,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:50,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2022-04-05 05:25:50,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:50,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 492 [2022-04-05 05:25:50,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:50,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 500 [2022-04-05 05:25:50,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:50,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2022-04-05 05:25:50,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:50,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2022-04-05 05:25:50,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:50,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 524 [2022-04-05 05:25:50,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:50,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 532 [2022-04-05 05:25:50,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:50,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2022-04-05 05:25:50,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:50,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 548 [2022-04-05 05:25:50,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:50,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 556 [2022-04-05 05:25:50,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:25:50,804 INFO L134 CoverageAnalysis]: Checked inductivity of 15180 backedges. 5998 proven. 3242 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2022-04-05 05:25:50,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:25:50,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300565803] [2022-04-05 05:25:50,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300565803] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:25:50,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170542807] [2022-04-05 05:25:50,805 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-05 05:25:50,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:25:50,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:25:50,806 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 05:25:50,806 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 05:25:51,062 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 56 check-sat command(s) [2022-04-05 05:25:51,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:25:51,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 1553 conjuncts, 114 conjunts are in the unsatisfiable core [2022-04-05 05:25:51,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:25:55,373 INFO L134 CoverageAnalysis]: Checked inductivity of 15180 backedges. 6160 proven. 3080 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2022-04-05 05:25:55,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:25:56,099 INFO L134 CoverageAnalysis]: Checked inductivity of 15180 backedges. 6160 proven. 3080 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2022-04-05 05:25:56,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1170542807] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:25:56,099 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:25:56,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [115, 114, 114] total 173 [2022-04-05 05:25:56,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146093985] [2022-04-05 05:25:56,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:25:56,100 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 173 states [2022-04-05 05:25:56,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:25:56,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 173 interpolants. [2022-04-05 05:25:56,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6617, Invalid=23139, Unknown=0, NotChecked=0, Total=29756 [2022-04-05 05:25:56,103 INFO L87 Difference]: Start difference. First operand 527 states and 541 transitions. Second operand has 173 states, 173 states have (on average 2.6878612716763004) internal successors, (465), 172 states have internal predecessors, (465), 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 05:26:01,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:26:01,322 INFO L93 Difference]: Finished difference Result 984 states and 1166 transitions. [2022-04-05 05:26:01,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2022-04-05 05:26:01,322 INFO L78 Accepts]: Start accepts. Automaton has has 173 states, 173 states have (on average 2.6878612716763004) internal successors, (465), 172 states have internal predecessors, (465), 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 568 [2022-04-05 05:26:01,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:26:01,324 INFO L225 Difference]: With dead ends: 984 [2022-04-05 05:26:01,324 INFO L226 Difference]: Without dead ends: 753 [2022-04-05 05:26:01,329 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1529 GetRequests, 1246 SyntacticMatches, 0 SemanticMatches, 283 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22270 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=17959, Invalid=62981, Unknown=0, NotChecked=0, Total=80940 [2022-04-05 05:26:01,329 INFO L913 BasicCegarLoop]: 124 mSDtfsCounter, 1226 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 3176 mSolverCounterSat, 832 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1227 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 4008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 832 IncrementalHoareTripleChecker+Valid, 3176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-04-05 05:26:01,329 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1227 Valid, 176 Invalid, 4008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [832 Valid, 3176 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-04-05 05:26:01,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2022-04-05 05:26:01,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 529. [2022-04-05 05:26:01,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 424 states have (on average 1.009433962264151) internal successors, (428), 425 states have internal predecessors, (428), 58 states have call successors, (58), 47 states have call predecessors, (58), 46 states have return successors, (57), 56 states have call predecessors, (57), 57 states have call successors, (57) [2022-04-05 05:26:01,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 543 transitions. [2022-04-05 05:26:01,369 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 543 transitions. Word has length 568 [2022-04-05 05:26:01,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:26:01,369 INFO L478 AbstractCegarLoop]: Abstraction has 529 states and 543 transitions. [2022-04-05 05:26:01,369 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 173 states, 173 states have (on average 2.6878612716763004) internal successors, (465), 172 states have internal predecessors, (465), 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 05:26:01,369 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 543 transitions. [2022-04-05 05:26:01,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 571 [2022-04-05 05:26:01,372 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:26:01,372 INFO L499 BasicCegarLoop]: trace histogram [57, 56, 56, 56, 56, 55, 55, 55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:26:01,389 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 05:26:01,572 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,SelfDestructingSolverStorable67 [2022-04-05 05:26:01,572 INFO L403 AbstractCegarLoop]: === Iteration 69 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:26:01,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:26:01,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1400903543, now seen corresponding path program 66 times [2022-04-05 05:26:01,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:26:01,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410200220] [2022-04-05 05:26:01,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:26:01,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:26:01,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:26:02,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-04-05 05:26:02,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-04-05 05:26:02,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-04-05 05:26:02,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-04-05 05:26:02,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-04-05 05:26:02,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-04-05 05:26:02,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-04-05 05:26:02,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-04-05 05:26:02,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-04-05 05:26:02,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-04-05 05:26:02,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-04-05 05:26:02,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-04-05 05:26:02,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-04-05 05:26:02,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-04-05 05:26:02,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-04-05 05:26:02,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-04-05 05:26:02,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-04-05 05:26:02,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-04-05 05:26:02,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-04-05 05:26:02,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-04-05 05:26:02,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-04-05 05:26:02,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-04-05 05:26:02,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-04-05 05:26:02,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-04-05 05:26:02,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-04-05 05:26:02,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-04-05 05:26:02,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-04-05 05:26:02,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-04-05 05:26:02,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-04-05 05:26:02,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-04-05 05:26:02,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-04-05 05:26:02,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-04-05 05:26:02,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-04-05 05:26:02,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-04-05 05:26:02,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-04-05 05:26:02,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-04-05 05:26:02,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-04-05 05:26:02,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-04-05 05:26:02,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-04-05 05:26:02,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-04-05 05:26:02,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2022-04-05 05:26:02,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2022-04-05 05:26:02,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2022-04-05 05:26:02,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2022-04-05 05:26:02,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2022-04-05 05:26:02,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2022-04-05 05:26:02,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2022-04-05 05:26:02,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2022-04-05 05:26:02,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 510 [2022-04-05 05:26:02,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 518 [2022-04-05 05:26:02,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2022-04-05 05:26:02,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 534 [2022-04-05 05:26:02,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 542 [2022-04-05 05:26:02,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 550 [2022-04-05 05:26:02,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 558 [2022-04-05 05:26:02,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:02,861 INFO L134 CoverageAnalysis]: Checked inductivity of 15292 backedges. 3190 proven. 6162 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2022-04-05 05:26:02,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:26:02,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410200220] [2022-04-05 05:26:02,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410200220] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:26:02,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826614760] [2022-04-05 05:26:02,862 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-05 05:26:02,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:26:02,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:26:02,863 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 05:26:02,865 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 05:26:03,118 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 57 check-sat command(s) [2022-04-05 05:26:03,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:26:03,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 1563 conjuncts, 115 conjunts are in the unsatisfiable core [2022-04-05 05:26:03,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:26:03,800 INFO L134 CoverageAnalysis]: Checked inductivity of 15292 backedges. 3302 proven. 6050 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2022-04-05 05:26:03,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:26:04,523 INFO L134 CoverageAnalysis]: Checked inductivity of 15292 backedges. 3302 proven. 6050 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2022-04-05 05:26:04,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1826614760] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:26:04,523 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:26:04,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 61, 61] total 66 [2022-04-05 05:26:04,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121486283] [2022-04-05 05:26:04,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:26:04,524 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-04-05 05:26:04,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:26:04,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-04-05 05:26:04,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1786, Invalid=2504, Unknown=0, NotChecked=0, Total=4290 [2022-04-05 05:26:04,525 INFO L87 Difference]: Start difference. First operand 529 states and 543 transitions. Second operand has 66 states, 66 states have (on average 4.787878787878788) internal successors, (316), 63 states have internal predecessors, (316), 58 states have call successors, (62), 4 states have call predecessors, (62), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2022-04-05 05:26:06,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:26:06,049 INFO L93 Difference]: Finished difference Result 548 states and 564 transitions. [2022-04-05 05:26:06,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-04-05 05:26:06,049 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 4.787878787878788) internal successors, (316), 63 states have internal predecessors, (316), 58 states have call successors, (62), 4 states have call predecessors, (62), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) Word has length 570 [2022-04-05 05:26:06,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:26:06,051 INFO L225 Difference]: With dead ends: 548 [2022-04-05 05:26:06,051 INFO L226 Difference]: Without dead ends: 546 [2022-04-05 05:26:06,053 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1430 GetRequests, 1303 SyntacticMatches, 1 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2952 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=5350, Invalid=10906, Unknown=0, NotChecked=0, Total=16256 [2022-04-05 05:26:06,053 INFO L913 BasicCegarLoop]: 77 mSDtfsCounter, 282 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 1630 mSolverCounterSat, 354 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 1984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 354 IncrementalHoareTripleChecker+Valid, 1630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-05 05:26:06,053 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [283 Valid, 99 Invalid, 1984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [354 Valid, 1630 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-05 05:26:06,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2022-04-05 05:26:06,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 541. [2022-04-05 05:26:06,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 433 states have (on average 1.0092378752886837) internal successors, (437), 434 states have internal predecessors, (437), 60 states have call successors, (60), 48 states have call predecessors, (60), 47 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2022-04-05 05:26:06,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 556 transitions. [2022-04-05 05:26:06,094 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 556 transitions. Word has length 570 [2022-04-05 05:26:06,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:26:06,095 INFO L478 AbstractCegarLoop]: Abstraction has 541 states and 556 transitions. [2022-04-05 05:26:06,095 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 4.787878787878788) internal successors, (316), 63 states have internal predecessors, (316), 58 states have call successors, (62), 4 states have call predecessors, (62), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2022-04-05 05:26:06,095 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 556 transitions. [2022-04-05 05:26:06,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2022-04-05 05:26:06,097 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:26:06,098 INFO L499 BasicCegarLoop]: trace histogram [58, 58, 58, 57, 57, 57, 57, 57, 57, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:26:06,115 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 05:26:06,298 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,SelfDestructingSolverStorable68 [2022-04-05 05:26:06,298 INFO L403 AbstractCegarLoop]: === Iteration 70 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:26:06,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:26:06,298 INFO L85 PathProgramCache]: Analyzing trace with hash 707100593, now seen corresponding path program 67 times [2022-04-05 05:26:06,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:26:06,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871511650] [2022-04-05 05:26:06,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:26:06,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:26:06,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:09,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:26:09,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:09,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-04-05 05:26:09,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:09,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-04-05 05:26:09,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:09,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-04-05 05:26:09,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:09,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-04-05 05:26:09,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:09,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-04-05 05:26:09,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:09,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-04-05 05:26:09,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:09,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-04-05 05:26:09,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:09,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-04-05 05:26:09,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:09,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-04-05 05:26:09,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:09,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-04-05 05:26:09,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:09,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-04-05 05:26:09,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:09,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-04-05 05:26:09,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:09,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-04-05 05:26:09,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:09,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-04-05 05:26:09,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:09,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-04-05 05:26:09,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:09,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-04-05 05:26:09,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:09,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-04-05 05:26:09,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:09,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-04-05 05:26:09,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:09,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-04-05 05:26:09,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:09,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-04-05 05:26:09,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:09,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-04-05 05:26:09,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:09,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-04-05 05:26:09,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:09,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-04-05 05:26:09,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:09,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-04-05 05:26:09,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:09,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-04-05 05:26:09,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:09,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-04-05 05:26:09,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:09,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-04-05 05:26:09,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:09,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-04-05 05:26:09,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:09,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-04-05 05:26:09,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:09,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-04-05 05:26:09,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:09,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-04-05 05:26:09,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:09,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-04-05 05:26:09,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:09,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-04-05 05:26:09,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:09,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-04-05 05:26:09,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:09,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-04-05 05:26:09,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:09,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-04-05 05:26:09,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:09,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-04-05 05:26:09,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:09,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-04-05 05:26:09,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:09,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-04-05 05:26:09,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:09,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-04-05 05:26:09,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:09,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2022-04-05 05:26:09,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:09,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2022-04-05 05:26:09,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:09,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2022-04-05 05:26:09,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:09,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2022-04-05 05:26:09,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:09,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2022-04-05 05:26:09,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:09,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2022-04-05 05:26:09,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:09,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2022-04-05 05:26:09,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:09,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2022-04-05 05:26:09,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:09,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 510 [2022-04-05 05:26:09,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:09,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 518 [2022-04-05 05:26:09,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:09,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2022-04-05 05:26:09,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:09,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 534 [2022-04-05 05:26:09,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:09,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 542 [2022-04-05 05:26:09,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:09,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 550 [2022-04-05 05:26:09,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:09,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 558 [2022-04-05 05:26:09,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:09,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 566 [2022-04-05 05:26:09,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:09,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 574 [2022-04-05 05:26:09,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:09,435 INFO L134 CoverageAnalysis]: Checked inductivity of 16188 backedges. 6444 proven. 3360 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2022-04-05 05:26:09,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:26:09,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871511650] [2022-04-05 05:26:09,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871511650] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:26:09,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136967185] [2022-04-05 05:26:09,436 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-05 05:26:09,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:26:09,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:26:09,437 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 05:26:09,437 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 05:26:09,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:09,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 1597 conjuncts, 116 conjunts are in the unsatisfiable core [2022-04-05 05:26:09,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:26:14,049 INFO L134 CoverageAnalysis]: Checked inductivity of 16188 backedges. 6832 proven. 3192 refuted. 0 times theorem prover too weak. 6164 trivial. 0 not checked. [2022-04-05 05:26:14,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:26:14,820 INFO L134 CoverageAnalysis]: Checked inductivity of 16188 backedges. 6610 proven. 3192 refuted. 0 times theorem prover too weak. 6386 trivial. 0 not checked. [2022-04-05 05:26:14,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136967185] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:26:14,821 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:26:14,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [118, 116, 116] total 177 [2022-04-05 05:26:14,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36165795] [2022-04-05 05:26:14,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:26:14,822 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 177 states [2022-04-05 05:26:14,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:26:14,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 177 interpolants. [2022-04-05 05:26:14,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6908, Invalid=24244, Unknown=0, NotChecked=0, Total=31152 [2022-04-05 05:26:14,825 INFO L87 Difference]: Start difference. First operand 541 states and 556 transitions. Second operand has 177 states, 177 states have (on average 2.7175141242937855) internal successors, (481), 176 states have internal predecessors, (481), 116 states have call successors, (119), 3 states have call predecessors, (119), 2 states have return successors, (117), 116 states have call predecessors, (117), 116 states have call successors, (117) [2022-04-05 05:26:20,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:26:20,406 INFO L93 Difference]: Finished difference Result 1012 states and 1198 transitions. [2022-04-05 05:26:20,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2022-04-05 05:26:20,406 INFO L78 Accepts]: Start accepts. Automaton has has 177 states, 177 states have (on average 2.7175141242937855) internal successors, (481), 176 states have internal predecessors, (481), 116 states have call successors, (119), 3 states have call predecessors, (119), 2 states have return successors, (117), 116 states have call predecessors, (117), 116 states have call successors, (117) Word has length 586 [2022-04-05 05:26:20,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:26:20,408 INFO L225 Difference]: With dead ends: 1012 [2022-04-05 05:26:20,408 INFO L226 Difference]: Without dead ends: 771 [2022-04-05 05:26:20,411 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1575 GetRequests, 1286 SyntacticMatches, 0 SemanticMatches, 289 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23296 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=18652, Invalid=65738, Unknown=0, NotChecked=0, Total=84390 [2022-04-05 05:26:20,412 INFO L913 BasicCegarLoop]: 126 mSDtfsCounter, 1388 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 4308 mSolverCounterSat, 1033 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1389 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 5341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1033 IncrementalHoareTripleChecker+Valid, 4308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-04-05 05:26:20,412 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1389 Valid, 213 Invalid, 5341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1033 Valid, 4308 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-04-05 05:26:20,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2022-04-05 05:26:20,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 543. [2022-04-05 05:26:20,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 435 states have (on average 1.0091954022988505) internal successors, (439), 436 states have internal predecessors, (439), 60 states have call successors, (60), 48 states have call predecessors, (60), 47 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2022-04-05 05:26:20,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 558 transitions. [2022-04-05 05:26:20,454 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 558 transitions. Word has length 586 [2022-04-05 05:26:20,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:26:20,454 INFO L478 AbstractCegarLoop]: Abstraction has 543 states and 558 transitions. [2022-04-05 05:26:20,454 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 177 states, 177 states have (on average 2.7175141242937855) internal successors, (481), 176 states have internal predecessors, (481), 116 states have call successors, (119), 3 states have call predecessors, (119), 2 states have return successors, (117), 116 states have call predecessors, (117), 116 states have call successors, (117) [2022-04-05 05:26:20,454 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 558 transitions. [2022-04-05 05:26:20,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 589 [2022-04-05 05:26:20,457 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:26:20,457 INFO L499 BasicCegarLoop]: trace histogram [58, 58, 58, 58, 57, 57, 57, 57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:26:20,477 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 05:26:20,671 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,SelfDestructingSolverStorable69 [2022-04-05 05:26:20,671 INFO L403 AbstractCegarLoop]: === Iteration 71 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:26:20,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:26:20,672 INFO L85 PathProgramCache]: Analyzing trace with hash -696434988, now seen corresponding path program 68 times [2022-04-05 05:26:20,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:26:20,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242749910] [2022-04-05 05:26:20,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:26:20,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:26:20,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:23,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:26:23,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:23,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-04-05 05:26:23,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:23,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-04-05 05:26:23,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:23,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-04-05 05:26:23,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:23,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-04-05 05:26:23,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:23,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-04-05 05:26:23,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:23,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-04-05 05:26:23,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:23,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-04-05 05:26:23,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:23,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-04-05 05:26:23,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:23,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-04-05 05:26:23,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:23,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-04-05 05:26:23,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:23,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-04-05 05:26:23,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:23,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-04-05 05:26:23,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:23,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-04-05 05:26:23,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:23,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-04-05 05:26:23,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:23,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-04-05 05:26:23,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:23,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-04-05 05:26:23,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:23,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-04-05 05:26:23,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:23,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-04-05 05:26:23,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:23,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-04-05 05:26:23,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:23,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-04-05 05:26:23,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:23,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-04-05 05:26:23,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:23,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-04-05 05:26:23,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:23,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-04-05 05:26:23,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:23,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-04-05 05:26:23,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:23,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-04-05 05:26:23,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:23,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-04-05 05:26:23,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:23,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-04-05 05:26:23,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:23,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-04-05 05:26:23,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:23,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-04-05 05:26:23,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:23,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-04-05 05:26:23,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:23,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-04-05 05:26:23,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:23,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-04-05 05:26:23,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:23,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-04-05 05:26:23,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:23,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-04-05 05:26:23,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:23,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-04-05 05:26:23,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:23,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-04-05 05:26:23,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:23,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2022-04-05 05:26:23,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:23,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2022-04-05 05:26:23,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:23,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2022-04-05 05:26:23,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:23,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2022-04-05 05:26:23,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:23,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2022-04-05 05:26:23,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:23,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2022-04-05 05:26:23,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:23,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2022-04-05 05:26:23,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:23,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2022-04-05 05:26:23,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:23,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2022-04-05 05:26:23,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:23,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2022-04-05 05:26:23,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:23,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2022-04-05 05:26:23,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:23,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2022-04-05 05:26:23,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:23,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 512 [2022-04-05 05:26:23,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:23,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 520 [2022-04-05 05:26:23,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:23,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 528 [2022-04-05 05:26:23,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:23,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 536 [2022-04-05 05:26:23,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:23,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 544 [2022-04-05 05:26:23,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:23,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 552 [2022-04-05 05:26:23,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:23,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 560 [2022-04-05 05:26:23,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:23,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2022-04-05 05:26:23,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:23,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 576 [2022-04-05 05:26:23,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:23,814 INFO L134 CoverageAnalysis]: Checked inductivity of 16302 backedges. 6444 proven. 3474 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2022-04-05 05:26:23,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:26:23,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242749910] [2022-04-05 05:26:23,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242749910] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:26:23,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497867465] [2022-04-05 05:26:23,814 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 05:26:23,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:26:23,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:26:23,816 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 05:26:23,817 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 05:26:23,976 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 05:26:23,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:26:23,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 1607 conjuncts, 118 conjunts are in the unsatisfiable core [2022-04-05 05:26:23,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:26:27,547 INFO L134 CoverageAnalysis]: Checked inductivity of 16302 backedges. 3420 proven. 6498 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2022-04-05 05:26:27,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:26:28,336 INFO L134 CoverageAnalysis]: Checked inductivity of 16302 backedges. 3420 proven. 6498 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2022-04-05 05:26:28,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497867465] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:26:28,337 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:26:28,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [119, 62, 62] total 179 [2022-04-05 05:26:28,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716982110] [2022-04-05 05:26:28,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:26:28,338 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 179 states [2022-04-05 05:26:28,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:26:28,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 179 interpolants. [2022-04-05 05:26:28,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5257, Invalid=26605, Unknown=0, NotChecked=0, Total=31862 [2022-04-05 05:26:28,340 INFO L87 Difference]: Start difference. First operand 543 states and 558 transitions. Second operand has 179 states, 179 states have (on average 3.346368715083799) internal successors, (599), 177 states have internal predecessors, (599), 117 states have call successors, (119), 4 states have call predecessors, (119), 1 states have return successors, (115), 115 states have call predecessors, (115), 115 states have call successors, (115) [2022-04-05 05:26:38,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:26:38,156 INFO L93 Difference]: Finished difference Result 1025 states and 1215 transitions. [2022-04-05 05:26:38,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 236 states. [2022-04-05 05:26:38,157 INFO L78 Accepts]: Start accepts. Automaton has has 179 states, 179 states have (on average 3.346368715083799) internal successors, (599), 177 states have internal predecessors, (599), 117 states have call successors, (119), 4 states have call predecessors, (119), 1 states have return successors, (115), 115 states have call predecessors, (115), 115 states have call successors, (115) Word has length 588 [2022-04-05 05:26:38,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:26:38,159 INFO L225 Difference]: With dead ends: 1025 [2022-04-05 05:26:38,159 INFO L226 Difference]: Without dead ends: 786 [2022-04-05 05:26:38,169 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1702 GetRequests, 1291 SyntacticMatches, 1 SemanticMatches, 410 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60019 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=28083, Invalid=141249, Unknown=0, NotChecked=0, Total=169332 [2022-04-05 05:26:38,170 INFO L913 BasicCegarLoop]: 183 mSDtfsCounter, 1984 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 7344 mSolverCounterSat, 1753 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1985 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 9097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1753 IncrementalHoareTripleChecker+Valid, 7344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-04-05 05:26:38,170 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1985 Valid, 275 Invalid, 9097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1753 Valid, 7344 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-04-05 05:26:38,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2022-04-05 05:26:38,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 553. [2022-04-05 05:26:38,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 443 states have (on average 1.0090293453724606) internal successors, (447), 444 states have internal predecessors, (447), 61 states have call successors, (61), 49 states have call predecessors, (61), 48 states have return successors, (60), 59 states have call predecessors, (60), 60 states have call successors, (60) [2022-04-05 05:26:38,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 568 transitions. [2022-04-05 05:26:38,242 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 568 transitions. Word has length 588 [2022-04-05 05:26:38,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:26:38,242 INFO L478 AbstractCegarLoop]: Abstraction has 553 states and 568 transitions. [2022-04-05 05:26:38,242 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 179 states, 179 states have (on average 3.346368715083799) internal successors, (599), 177 states have internal predecessors, (599), 117 states have call successors, (119), 4 states have call predecessors, (119), 1 states have return successors, (115), 115 states have call predecessors, (115), 115 states have call successors, (115) [2022-04-05 05:26:38,242 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 568 transitions. [2022-04-05 05:26:38,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 599 [2022-04-05 05:26:38,245 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:26:38,245 INFO L499 BasicCegarLoop]: trace histogram [59, 59, 59, 59, 58, 58, 58, 58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:26:38,271 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 05:26:38,445 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,SelfDestructingSolverStorable70 [2022-04-05 05:26:38,446 INFO L403 AbstractCegarLoop]: === Iteration 72 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:26:38,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:26:38,446 INFO L85 PathProgramCache]: Analyzing trace with hash -619026229, now seen corresponding path program 69 times [2022-04-05 05:26:38,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:26:38,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235225641] [2022-04-05 05:26:38,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:26:38,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:26:38,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:26:41,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-04-05 05:26:41,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-04-05 05:26:41,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-04-05 05:26:41,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-04-05 05:26:41,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-04-05 05:26:41,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-04-05 05:26:41,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-04-05 05:26:41,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-04-05 05:26:41,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-04-05 05:26:41,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-04-05 05:26:41,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-04-05 05:26:41,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-04-05 05:26:41,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-04-05 05:26:41,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-04-05 05:26:41,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-04-05 05:26:41,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-04-05 05:26:41,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-04-05 05:26:41,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-04-05 05:26:41,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-04-05 05:26:41,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-04-05 05:26:41,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-04-05 05:26:41,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-04-05 05:26:41,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-04-05 05:26:41,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-04-05 05:26:41,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-04-05 05:26:41,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-04-05 05:26:41,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-04-05 05:26:41,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-04-05 05:26:41,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-04-05 05:26:41,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-04-05 05:26:41,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-04-05 05:26:41,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-04-05 05:26:41,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-04-05 05:26:41,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-04-05 05:26:41,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-04-05 05:26:41,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-04-05 05:26:41,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-04-05 05:26:41,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-04-05 05:26:41,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-04-05 05:26:41,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2022-04-05 05:26:41,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2022-04-05 05:26:41,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2022-04-05 05:26:41,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2022-04-05 05:26:41,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2022-04-05 05:26:41,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2022-04-05 05:26:41,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2022-04-05 05:26:41,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2022-04-05 05:26:41,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2022-04-05 05:26:41,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2022-04-05 05:26:41,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 522 [2022-04-05 05:26:41,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 530 [2022-04-05 05:26:41,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2022-04-05 05:26:41,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 546 [2022-04-05 05:26:41,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2022-04-05 05:26:41,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 562 [2022-04-05 05:26:41,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 570 [2022-04-05 05:26:41,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 578 [2022-04-05 05:26:41,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 586 [2022-04-05 05:26:41,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:26:41,956 INFO L134 CoverageAnalysis]: Checked inductivity of 16878 backedges. 6673 proven. 3593 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2022-04-05 05:26:41,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:26:41,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235225641] [2022-04-05 05:26:41,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235225641] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:26:41,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791209477] [2022-04-05 05:26:41,956 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-05 05:26:41,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:26:41,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:26:41,957 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 05:26:41,958 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 05:26:42,286 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 59 check-sat command(s) [2022-04-05 05:26:42,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:26:42,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 1634 conjuncts, 120 conjunts are in the unsatisfiable core [2022-04-05 05:26:42,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:26:46,157 INFO L134 CoverageAnalysis]: Checked inductivity of 16878 backedges. 3538 proven. 6728 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2022-04-05 05:26:46,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:26:46,926 INFO L134 CoverageAnalysis]: Checked inductivity of 16878 backedges. 3538 proven. 6728 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2022-04-05 05:26:46,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791209477] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:26:46,926 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:26:46,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [121, 63, 63] total 182 [2022-04-05 05:26:46,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88368450] [2022-04-05 05:26:46,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:26:46,927 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 182 states [2022-04-05 05:26:46,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:26:46,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 182 interpolants. [2022-04-05 05:26:46,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5436, Invalid=27506, Unknown=0, NotChecked=0, Total=32942 [2022-04-05 05:26:46,929 INFO L87 Difference]: Start difference. First operand 553 states and 568 transitions. Second operand has 182 states, 182 states have (on average 3.3461538461538463) internal successors, (609), 180 states have internal predecessors, (609), 119 states have call successors, (121), 4 states have call predecessors, (121), 1 states have return successors, (117), 117 states have call predecessors, (117), 117 states have call successors, (117) [2022-04-05 05:26:57,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:26:57,366 INFO L93 Difference]: Finished difference Result 1043 states and 1236 transitions. [2022-04-05 05:26:57,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 240 states. [2022-04-05 05:26:57,367 INFO L78 Accepts]: Start accepts. Automaton has has 182 states, 182 states have (on average 3.3461538461538463) internal successors, (609), 180 states have internal predecessors, (609), 119 states have call successors, (121), 4 states have call predecessors, (121), 1 states have return successors, (117), 117 states have call predecessors, (117), 117 states have call successors, (117) Word has length 598 [2022-04-05 05:26:57,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:26:57,369 INFO L225 Difference]: With dead ends: 1043 [2022-04-05 05:26:57,369 INFO L226 Difference]: Without dead ends: 800 [2022-04-05 05:26:57,377 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1731 GetRequests, 1313 SyntacticMatches, 1 SemanticMatches, 417 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62116 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=29039, Invalid=146103, Unknown=0, NotChecked=0, Total=175142 [2022-04-05 05:26:57,377 INFO L913 BasicCegarLoop]: 186 mSDtfsCounter, 2043 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 7655 mSolverCounterSat, 1617 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2044 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 9272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1617 IncrementalHoareTripleChecker+Valid, 7655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-04-05 05:26:57,377 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2044 Valid, 273 Invalid, 9272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1617 Valid, 7655 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-04-05 05:26:57,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2022-04-05 05:26:57,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 563. [2022-04-05 05:26:57,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 451 states have (on average 1.0088691796008868) internal successors, (455), 452 states have internal predecessors, (455), 62 states have call successors, (62), 50 states have call predecessors, (62), 49 states have return successors, (61), 60 states have call predecessors, (61), 61 states have call successors, (61) [2022-04-05 05:26:57,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 578 transitions. [2022-04-05 05:26:57,435 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 578 transitions. Word has length 598 [2022-04-05 05:26:57,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:26:57,435 INFO L478 AbstractCegarLoop]: Abstraction has 563 states and 578 transitions. [2022-04-05 05:26:57,436 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 182 states, 182 states have (on average 3.3461538461538463) internal successors, (609), 180 states have internal predecessors, (609), 119 states have call successors, (121), 4 states have call predecessors, (121), 1 states have return successors, (117), 117 states have call predecessors, (117), 117 states have call successors, (117) [2022-04-05 05:26:57,436 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 578 transitions. [2022-04-05 05:26:57,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 609 [2022-04-05 05:26:57,438 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:26:57,439 INFO L499 BasicCegarLoop]: trace histogram [60, 60, 60, 60, 59, 59, 59, 59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:26:57,483 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 05:26:57,639 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:26:57,639 INFO L403 AbstractCegarLoop]: === Iteration 73 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:26:57,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:26:57,640 INFO L85 PathProgramCache]: Analyzing trace with hash -2127033342, now seen corresponding path program 70 times [2022-04-05 05:26:57,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:26:57,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549107238] [2022-04-05 05:26:57,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:26:57,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:26:57,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:01,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:27:01,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:01,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-04-05 05:27:01,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:01,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-04-05 05:27:01,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:01,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-04-05 05:27:01,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:01,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-04-05 05:27:01,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:01,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-04-05 05:27:01,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:01,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-04-05 05:27:01,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:01,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-04-05 05:27:01,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:01,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-04-05 05:27:01,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:01,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-04-05 05:27:01,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:01,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-04-05 05:27:01,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:01,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-04-05 05:27:01,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:01,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-04-05 05:27:01,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:01,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-04-05 05:27:01,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:01,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-04-05 05:27:01,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:01,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-04-05 05:27:01,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:01,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-04-05 05:27:01,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:01,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-04-05 05:27:01,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:01,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-04-05 05:27:01,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:01,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-04-05 05:27:01,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:01,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-04-05 05:27:01,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:01,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-04-05 05:27:01,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:01,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-04-05 05:27:01,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:01,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-04-05 05:27:01,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:01,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-04-05 05:27:01,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:01,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-04-05 05:27:01,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:01,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-04-05 05:27:01,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:01,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-04-05 05:27:01,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:01,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-04-05 05:27:01,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:01,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-04-05 05:27:01,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:01,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-04-05 05:27:01,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:01,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-04-05 05:27:01,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:01,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-04-05 05:27:01,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:01,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-04-05 05:27:01,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:01,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-04-05 05:27:01,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:01,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-04-05 05:27:01,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:01,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-04-05 05:27:01,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:01,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2022-04-05 05:27:01,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:01,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2022-04-05 05:27:01,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:01,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2022-04-05 05:27:01,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:01,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2022-04-05 05:27:01,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:01,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2022-04-05 05:27:01,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:01,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2022-04-05 05:27:01,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:01,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2022-04-05 05:27:01,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:01,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2022-04-05 05:27:01,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:01,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2022-04-05 05:27:01,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:01,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 492 [2022-04-05 05:27:01,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:01,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 500 [2022-04-05 05:27:01,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:01,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2022-04-05 05:27:01,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:01,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2022-04-05 05:27:01,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:01,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 524 [2022-04-05 05:27:01,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:01,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 532 [2022-04-05 05:27:01,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:01,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2022-04-05 05:27:01,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:01,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 548 [2022-04-05 05:27:01,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:01,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 556 [2022-04-05 05:27:01,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:01,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 564 [2022-04-05 05:27:01,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:01,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 572 [2022-04-05 05:27:01,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:01,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 580 [2022-04-05 05:27:01,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:01,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 588 [2022-04-05 05:27:01,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:01,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 596 [2022-04-05 05:27:01,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:01,263 INFO L134 CoverageAnalysis]: Checked inductivity of 17464 backedges. 6906 proven. 3714 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2022-04-05 05:27:01,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:27:01,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549107238] [2022-04-05 05:27:01,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549107238] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:27:01,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850379575] [2022-04-05 05:27:01,264 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-05 05:27:01,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:27:01,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:27:01,265 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 05:27:01,266 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 05:27:01,465 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-05 05:27:01,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:27:01,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 1661 conjuncts, 122 conjunts are in the unsatisfiable core [2022-04-05 05:27:01,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:27:05,504 INFO L134 CoverageAnalysis]: Checked inductivity of 17464 backedges. 3658 proven. 6962 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2022-04-05 05:27:05,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:27:06,389 INFO L134 CoverageAnalysis]: Checked inductivity of 17464 backedges. 3658 proven. 6962 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2022-04-05 05:27:06,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850379575] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:27:06,390 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:27:06,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [123, 64, 64] total 185 [2022-04-05 05:27:06,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340463554] [2022-04-05 05:27:06,390 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:27:06,391 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 185 states [2022-04-05 05:27:06,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:27:06,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 185 interpolants. [2022-04-05 05:27:06,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5618, Invalid=28422, Unknown=0, NotChecked=0, Total=34040 [2022-04-05 05:27:06,395 INFO L87 Difference]: Start difference. First operand 563 states and 578 transitions. Second operand has 185 states, 185 states have (on average 3.345945945945946) internal successors, (619), 183 states have internal predecessors, (619), 121 states have call successors, (123), 4 states have call predecessors, (123), 1 states have return successors, (119), 119 states have call predecessors, (119), 119 states have call successors, (119) [2022-04-05 05:27:17,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:27:17,498 INFO L93 Difference]: Finished difference Result 1061 states and 1257 transitions. [2022-04-05 05:27:17,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 244 states. [2022-04-05 05:27:17,498 INFO L78 Accepts]: Start accepts. Automaton has has 185 states, 185 states have (on average 3.345945945945946) internal successors, (619), 183 states have internal predecessors, (619), 121 states have call successors, (123), 4 states have call predecessors, (123), 1 states have return successors, (119), 119 states have call predecessors, (119), 119 states have call successors, (119) Word has length 608 [2022-04-05 05:27:17,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:27:17,501 INFO L225 Difference]: With dead ends: 1061 [2022-04-05 05:27:17,501 INFO L226 Difference]: Without dead ends: 814 [2022-04-05 05:27:17,510 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1760 GetRequests, 1335 SyntacticMatches, 1 SemanticMatches, 424 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64249 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=30011, Invalid=151039, Unknown=0, NotChecked=0, Total=181050 [2022-04-05 05:27:17,510 INFO L913 BasicCegarLoop]: 189 mSDtfsCounter, 2244 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 8387 mSolverCounterSat, 1720 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2245 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 10107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1720 IncrementalHoareTripleChecker+Valid, 8387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-04-05 05:27:17,510 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2245 Valid, 296 Invalid, 10107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1720 Valid, 8387 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-04-05 05:27:17,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2022-04-05 05:27:17,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 573. [2022-04-05 05:27:17,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 459 states have (on average 1.008714596949891) internal successors, (463), 460 states have internal predecessors, (463), 63 states have call successors, (63), 51 states have call predecessors, (63), 50 states have return successors, (62), 61 states have call predecessors, (62), 62 states have call successors, (62) [2022-04-05 05:27:17,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 588 transitions. [2022-04-05 05:27:17,555 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 588 transitions. Word has length 608 [2022-04-05 05:27:17,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:27:17,555 INFO L478 AbstractCegarLoop]: Abstraction has 573 states and 588 transitions. [2022-04-05 05:27:17,556 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 185 states, 185 states have (on average 3.345945945945946) internal successors, (619), 183 states have internal predecessors, (619), 121 states have call successors, (123), 4 states have call predecessors, (123), 1 states have return successors, (119), 119 states have call predecessors, (119), 119 states have call successors, (119) [2022-04-05 05:27:17,556 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 588 transitions. [2022-04-05 05:27:17,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 619 [2022-04-05 05:27:17,558 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:27:17,559 INFO L499 BasicCegarLoop]: trace histogram [61, 61, 61, 61, 60, 60, 60, 60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:27:17,576 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2022-04-05 05:27:17,759 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:27:17,759 INFO L403 AbstractCegarLoop]: === Iteration 74 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:27:17,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:27:17,759 INFO L85 PathProgramCache]: Analyzing trace with hash 2015205497, now seen corresponding path program 71 times [2022-04-05 05:27:17,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:27:17,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103599439] [2022-04-05 05:27:17,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:27:17,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:27:17,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:21,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:27:21,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:21,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-04-05 05:27:21,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:21,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-04-05 05:27:21,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:21,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-04-05 05:27:21,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:21,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-04-05 05:27:21,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:21,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-04-05 05:27:21,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:21,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-04-05 05:27:21,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:21,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-04-05 05:27:21,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:21,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-04-05 05:27:21,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:21,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-04-05 05:27:21,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:21,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-04-05 05:27:21,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:21,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-04-05 05:27:21,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:21,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-04-05 05:27:21,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:21,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-04-05 05:27:21,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:21,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-04-05 05:27:21,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:21,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-04-05 05:27:21,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:21,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-04-05 05:27:21,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:21,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-04-05 05:27:21,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:21,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-04-05 05:27:21,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:21,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-04-05 05:27:21,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:21,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-04-05 05:27:21,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:21,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-04-05 05:27:21,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:21,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-04-05 05:27:21,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:21,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-04-05 05:27:21,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:21,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-04-05 05:27:21,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:21,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-04-05 05:27:21,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:21,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-04-05 05:27:21,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:21,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-04-05 05:27:21,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:21,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-04-05 05:27:21,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:21,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-04-05 05:27:21,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:21,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-04-05 05:27:21,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:21,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-04-05 05:27:21,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:21,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-04-05 05:27:21,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:21,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-04-05 05:27:21,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:21,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-04-05 05:27:21,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:21,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-04-05 05:27:21,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:21,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-04-05 05:27:21,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:21,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-04-05 05:27:21,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:21,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-04-05 05:27:21,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:21,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-04-05 05:27:21,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:21,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2022-04-05 05:27:21,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:21,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2022-04-05 05:27:21,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:21,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2022-04-05 05:27:21,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:21,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2022-04-05 05:27:21,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:21,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2022-04-05 05:27:21,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:21,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2022-04-05 05:27:21,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:21,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2022-04-05 05:27:21,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:21,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2022-04-05 05:27:21,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:21,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 510 [2022-04-05 05:27:21,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:21,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 518 [2022-04-05 05:27:21,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:21,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2022-04-05 05:27:21,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:21,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 534 [2022-04-05 05:27:21,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:21,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 542 [2022-04-05 05:27:21,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:21,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 550 [2022-04-05 05:27:21,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:21,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 558 [2022-04-05 05:27:21,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:21,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 566 [2022-04-05 05:27:21,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:21,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 574 [2022-04-05 05:27:21,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:21,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 582 [2022-04-05 05:27:21,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:21,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 590 [2022-04-05 05:27:21,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:21,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 598 [2022-04-05 05:27:21,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:21,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 606 [2022-04-05 05:27:21,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:21,396 INFO L134 CoverageAnalysis]: Checked inductivity of 18060 backedges. 7143 proven. 3837 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2022-04-05 05:27:21,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:27:21,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103599439] [2022-04-05 05:27:21,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103599439] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:27:21,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696343273] [2022-04-05 05:27:21,396 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-05 05:27:21,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:27:21,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:27:21,397 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 05:27:21,398 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 05:27:21,714 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 61 check-sat command(s) [2022-04-05 05:27:21,714 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:27:21,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 1688 conjuncts, 124 conjunts are in the unsatisfiable core [2022-04-05 05:27:21,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:27:26,796 INFO L134 CoverageAnalysis]: Checked inductivity of 18060 backedges. 7320 proven. 3660 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2022-04-05 05:27:26,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:27:27,657 INFO L134 CoverageAnalysis]: Checked inductivity of 18060 backedges. 7320 proven. 3660 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2022-04-05 05:27:27,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696343273] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:27:27,658 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:27:27,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [125, 124, 124] total 188 [2022-04-05 05:27:27,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388765525] [2022-04-05 05:27:27,658 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:27:27,659 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 188 states [2022-04-05 05:27:27,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:27:27,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 188 interpolants. [2022-04-05 05:27:27,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7817, Invalid=27339, Unknown=0, NotChecked=0, Total=35156 [2022-04-05 05:27:27,661 INFO L87 Difference]: Start difference. First operand 573 states and 588 transitions. Second operand has 188 states, 188 states have (on average 2.6861702127659575) internal successors, (505), 187 states have internal predecessors, (505), 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 05:27:34,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:27:34,413 INFO L93 Difference]: Finished difference Result 1070 states and 1268 transitions. [2022-04-05 05:27:34,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2022-04-05 05:27:34,413 INFO L78 Accepts]: Start accepts. Automaton has has 188 states, 188 states have (on average 2.6861702127659575) internal successors, (505), 187 states have internal predecessors, (505), 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 618 [2022-04-05 05:27:34,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:27:34,415 INFO L225 Difference]: With dead ends: 1070 [2022-04-05 05:27:34,416 INFO L226 Difference]: Without dead ends: 819 [2022-04-05 05:27:34,420 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1664 GetRequests, 1356 SyntacticMatches, 0 SemanticMatches, 308 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26395 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=21239, Invalid=74551, Unknown=0, NotChecked=0, Total=95790 [2022-04-05 05:27:34,421 INFO L913 BasicCegarLoop]: 134 mSDtfsCounter, 1281 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 4096 mSolverCounterSat, 941 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1282 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 5037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 941 IncrementalHoareTripleChecker+Valid, 4096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-04-05 05:27:34,421 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1282 Valid, 191 Invalid, 5037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [941 Valid, 4096 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-04-05 05:27:34,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2022-04-05 05:27:34,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 575. [2022-04-05 05:27:34,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 461 states have (on average 1.0086767895878526) internal successors, (465), 462 states have internal predecessors, (465), 63 states have call successors, (63), 51 states have call predecessors, (63), 50 states have return successors, (62), 61 states have call predecessors, (62), 62 states have call successors, (62) [2022-04-05 05:27:34,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 590 transitions. [2022-04-05 05:27:34,466 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 590 transitions. Word has length 618 [2022-04-05 05:27:34,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:27:34,466 INFO L478 AbstractCegarLoop]: Abstraction has 575 states and 590 transitions. [2022-04-05 05:27:34,466 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 188 states, 188 states have (on average 2.6861702127659575) internal successors, (505), 187 states have internal predecessors, (505), 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 05:27:34,466 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 590 transitions. [2022-04-05 05:27:34,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 621 [2022-04-05 05:27:34,469 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:27:34,469 INFO L499 BasicCegarLoop]: trace histogram [62, 61, 61, 61, 61, 60, 60, 60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:27:34,487 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 05:27:34,669 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:27:34,670 INFO L403 AbstractCegarLoop]: === Iteration 75 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:27:34,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:27:34,670 INFO L85 PathProgramCache]: Analyzing trace with hash 842533788, now seen corresponding path program 72 times [2022-04-05 05:27:34,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:27:34,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107757280] [2022-04-05 05:27:34,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:27:34,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:27:34,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:36,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:27:36,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:36,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-04-05 05:27:36,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:36,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-04-05 05:27:36,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:36,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-04-05 05:27:36,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:36,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-04-05 05:27:36,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:36,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-04-05 05:27:36,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:36,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-04-05 05:27:36,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:36,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-04-05 05:27:36,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:36,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-04-05 05:27:36,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:36,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-04-05 05:27:36,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:36,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-04-05 05:27:36,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:36,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-04-05 05:27:36,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:36,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-04-05 05:27:36,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:36,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-04-05 05:27:36,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:36,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-04-05 05:27:36,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:36,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-04-05 05:27:36,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:36,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-04-05 05:27:36,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:36,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-04-05 05:27:36,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:36,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-04-05 05:27:36,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:36,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-04-05 05:27:36,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:36,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-04-05 05:27:36,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:36,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-04-05 05:27:36,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:36,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-04-05 05:27:36,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:36,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-04-05 05:27:36,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:36,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-04-05 05:27:36,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:36,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-04-05 05:27:36,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:36,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-04-05 05:27:36,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:36,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-04-05 05:27:36,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:36,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-04-05 05:27:36,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:36,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-04-05 05:27:36,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:36,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-04-05 05:27:36,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:36,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-04-05 05:27:36,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:36,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-04-05 05:27:36,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:36,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-04-05 05:27:36,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:36,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-04-05 05:27:36,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:36,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-04-05 05:27:36,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:36,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2022-04-05 05:27:36,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:36,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2022-04-05 05:27:36,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:36,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2022-04-05 05:27:36,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:36,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2022-04-05 05:27:36,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:36,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2022-04-05 05:27:36,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:36,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2022-04-05 05:27:36,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:36,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2022-04-05 05:27:36,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:36,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2022-04-05 05:27:36,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:36,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2022-04-05 05:27:36,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:36,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2022-04-05 05:27:36,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:36,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2022-04-05 05:27:36,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:36,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2022-04-05 05:27:36,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:36,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 512 [2022-04-05 05:27:36,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:36,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 520 [2022-04-05 05:27:36,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:36,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 528 [2022-04-05 05:27:36,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:36,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 536 [2022-04-05 05:27:36,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:36,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 544 [2022-04-05 05:27:36,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:36,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 552 [2022-04-05 05:27:36,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:36,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 560 [2022-04-05 05:27:36,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:36,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2022-04-05 05:27:36,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:36,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 576 [2022-04-05 05:27:36,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:36,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 584 [2022-04-05 05:27:36,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:36,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 592 [2022-04-05 05:27:36,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:36,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 600 [2022-04-05 05:27:36,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:36,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 608 [2022-04-05 05:27:36,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:36,155 INFO L134 CoverageAnalysis]: Checked inductivity of 18182 backedges. 3780 proven. 7322 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2022-04-05 05:27:36,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:27:36,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107757280] [2022-04-05 05:27:36,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107757280] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:27:36,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257570271] [2022-04-05 05:27:36,155 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-05 05:27:36,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:27:36,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:27:36,156 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 05:27:36,157 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 05:27:36,441 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 62 check-sat command(s) [2022-04-05 05:27:36,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:27:36,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 1698 conjuncts, 125 conjunts are in the unsatisfiable core [2022-04-05 05:27:36,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:27:37,202 INFO L134 CoverageAnalysis]: Checked inductivity of 18182 backedges. 3902 proven. 7200 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2022-04-05 05:27:37,202 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:27:37,965 INFO L134 CoverageAnalysis]: Checked inductivity of 18182 backedges. 3902 proven. 7200 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2022-04-05 05:27:37,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257570271] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:27:37,965 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:27:37,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 66, 66] total 71 [2022-04-05 05:27:37,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56760172] [2022-04-05 05:27:37,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:27:37,966 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2022-04-05 05:27:37,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:27:37,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2022-04-05 05:27:37,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2096, Invalid=2874, Unknown=0, NotChecked=0, Total=4970 [2022-04-05 05:27:37,967 INFO L87 Difference]: Start difference. First operand 575 states and 590 transitions. Second operand has 71 states, 71 states have (on average 4.802816901408451) internal successors, (341), 68 states have internal predecessors, (341), 63 states have call successors, (67), 4 states have call predecessors, (67), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2022-04-05 05:27:39,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:27:39,638 INFO L93 Difference]: Finished difference Result 594 states and 611 transitions. [2022-04-05 05:27:39,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-04-05 05:27:39,639 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 4.802816901408451) internal successors, (341), 68 states have internal predecessors, (341), 63 states have call successors, (67), 4 states have call predecessors, (67), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) Word has length 620 [2022-04-05 05:27:39,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:27:39,642 INFO L225 Difference]: With dead ends: 594 [2022-04-05 05:27:39,642 INFO L226 Difference]: Without dead ends: 592 [2022-04-05 05:27:39,644 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1555 GetRequests, 1418 SyntacticMatches, 1 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3367 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=6280, Invalid=12626, Unknown=0, NotChecked=0, Total=18906 [2022-04-05 05:27:39,645 INFO L913 BasicCegarLoop]: 82 mSDtfsCounter, 299 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1582 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 1904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 1582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-05 05:27:39,645 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 114 Invalid, 1904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 1582 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-05 05:27:39,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2022-04-05 05:27:39,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 587. [2022-04-05 05:27:39,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 470 states have (on average 1.0085106382978724) internal successors, (474), 471 states have internal predecessors, (474), 65 states have call successors, (65), 52 states have call predecessors, (65), 51 states have return successors, (64), 63 states have call predecessors, (64), 64 states have call successors, (64) [2022-04-05 05:27:39,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 603 transitions. [2022-04-05 05:27:39,718 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 603 transitions. Word has length 620 [2022-04-05 05:27:39,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:27:39,718 INFO L478 AbstractCegarLoop]: Abstraction has 587 states and 603 transitions. [2022-04-05 05:27:39,718 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 4.802816901408451) internal successors, (341), 68 states have internal predecessors, (341), 63 states have call successors, (67), 4 states have call predecessors, (67), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2022-04-05 05:27:39,719 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 603 transitions. [2022-04-05 05:27:39,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 637 [2022-04-05 05:27:39,722 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:27:39,723 INFO L499 BasicCegarLoop]: trace histogram [63, 63, 63, 62, 62, 62, 62, 62, 62, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:27:39,740 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2022-04-05 05:27:39,923 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,SelfDestructingSolverStorable74 [2022-04-05 05:27:39,923 INFO L403 AbstractCegarLoop]: === Iteration 76 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:27:39,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:27:39,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1976769732, now seen corresponding path program 73 times [2022-04-05 05:27:39,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:27:39,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214379391] [2022-04-05 05:27:39,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:27:39,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:27:40,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:43,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:27:43,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:43,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-04-05 05:27:43,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:43,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-04-05 05:27:43,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:43,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-04-05 05:27:43,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:43,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-04-05 05:27:43,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:43,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-04-05 05:27:43,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:43,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-04-05 05:27:43,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:43,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-04-05 05:27:43,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:43,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-04-05 05:27:43,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:43,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-04-05 05:27:43,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:43,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-04-05 05:27:43,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:43,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-04-05 05:27:43,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:43,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-04-05 05:27:43,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:43,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-04-05 05:27:43,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:43,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-04-05 05:27:43,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:43,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-04-05 05:27:43,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:43,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-04-05 05:27:43,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:43,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-04-05 05:27:43,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:43,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-04-05 05:27:43,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:43,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-04-05 05:27:43,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:43,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-04-05 05:27:43,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:43,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-04-05 05:27:43,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:43,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-04-05 05:27:43,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:43,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-04-05 05:27:43,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:43,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-04-05 05:27:43,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:43,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-04-05 05:27:43,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:43,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-04-05 05:27:43,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:43,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-04-05 05:27:43,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:43,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-04-05 05:27:43,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:43,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-04-05 05:27:43,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:43,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-04-05 05:27:43,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:43,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-04-05 05:27:43,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:43,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-04-05 05:27:43,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:43,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-04-05 05:27:43,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:43,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-04-05 05:27:43,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:43,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-04-05 05:27:43,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:43,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2022-04-05 05:27:43,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:43,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2022-04-05 05:27:43,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:43,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2022-04-05 05:27:43,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:43,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2022-04-05 05:27:43,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:43,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2022-04-05 05:27:43,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:43,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2022-04-05 05:27:43,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:43,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2022-04-05 05:27:43,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:43,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2022-04-05 05:27:43,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:43,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2022-04-05 05:27:43,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:43,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2022-04-05 05:27:43,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:43,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2022-04-05 05:27:43,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:43,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2022-04-05 05:27:43,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:43,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 512 [2022-04-05 05:27:43,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:43,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 520 [2022-04-05 05:27:43,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:43,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 528 [2022-04-05 05:27:43,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:43,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 536 [2022-04-05 05:27:43,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:43,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 544 [2022-04-05 05:27:43,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:43,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 552 [2022-04-05 05:27:43,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:43,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 560 [2022-04-05 05:27:43,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:43,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2022-04-05 05:27:43,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:43,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 576 [2022-04-05 05:27:43,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:43,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 584 [2022-04-05 05:27:43,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:43,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 592 [2022-04-05 05:27:43,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:43,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 600 [2022-04-05 05:27:43,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:43,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 608 [2022-04-05 05:27:43,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:43,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 616 [2022-04-05 05:27:43,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:43,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 624 [2022-04-05 05:27:43,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:43,777 INFO L134 CoverageAnalysis]: Checked inductivity of 19158 backedges. 7629 proven. 3965 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2022-04-05 05:27:43,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:27:43,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214379391] [2022-04-05 05:27:43,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214379391] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:27:43,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812663644] [2022-04-05 05:27:43,778 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-05 05:27:43,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:27:43,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:27:43,779 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 05:27:43,780 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 05:27:43,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:27:43,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 1732 conjuncts, 126 conjunts are in the unsatisfiable core [2022-04-05 05:27:43,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:27:49,180 INFO L134 CoverageAnalysis]: Checked inductivity of 19158 backedges. 8052 proven. 3782 refuted. 0 times theorem prover too weak. 7324 trivial. 0 not checked. [2022-04-05 05:27:49,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:27:50,056 INFO L134 CoverageAnalysis]: Checked inductivity of 19158 backedges. 7810 proven. 3782 refuted. 0 times theorem prover too weak. 7566 trivial. 0 not checked. [2022-04-05 05:27:50,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1812663644] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:27:50,056 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:27:50,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [128, 126, 126] total 192 [2022-04-05 05:27:50,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876604810] [2022-04-05 05:27:50,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:27:50,057 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2022-04-05 05:27:50,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:27:50,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2022-04-05 05:27:50,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8133, Invalid=28539, Unknown=0, NotChecked=0, Total=36672 [2022-04-05 05:27:50,059 INFO L87 Difference]: Start difference. First operand 587 states and 603 transitions. Second operand has 192 states, 192 states have (on average 2.7135416666666665) internal successors, (521), 191 states have internal predecessors, (521), 126 states have call successors, (129), 3 states have call predecessors, (129), 2 states have return successors, (127), 126 states have call predecessors, (127), 126 states have call successors, (127) [2022-04-05 05:27:56,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:27:56,596 INFO L93 Difference]: Finished difference Result 1098 states and 1300 transitions. [2022-04-05 05:27:56,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2022-04-05 05:27:56,597 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 192 states have (on average 2.7135416666666665) internal successors, (521), 191 states have internal predecessors, (521), 126 states have call successors, (129), 3 states have call predecessors, (129), 2 states have return successors, (127), 126 states have call predecessors, (127), 126 states have call successors, (127) Word has length 636 [2022-04-05 05:27:56,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:27:56,599 INFO L225 Difference]: With dead ends: 1098 [2022-04-05 05:27:56,599 INFO L226 Difference]: Without dead ends: 837 [2022-04-05 05:27:56,604 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1710 GetRequests, 1396 SyntacticMatches, 0 SemanticMatches, 314 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27511 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=21992, Invalid=77548, Unknown=0, NotChecked=0, Total=99540 [2022-04-05 05:27:56,604 INFO L913 BasicCegarLoop]: 136 mSDtfsCounter, 1291 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 4145 mSolverCounterSat, 955 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1292 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 5100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 955 IncrementalHoareTripleChecker+Valid, 4145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-04-05 05:27:56,604 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1292 Valid, 203 Invalid, 5100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [955 Valid, 4145 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-04-05 05:27:56,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2022-04-05 05:27:56,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 589. [2022-04-05 05:27:56,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 472 states have (on average 1.0084745762711864) internal successors, (476), 473 states have internal predecessors, (476), 65 states have call successors, (65), 52 states have call predecessors, (65), 51 states have return successors, (64), 63 states have call predecessors, (64), 64 states have call successors, (64) [2022-04-05 05:27:56,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 605 transitions. [2022-04-05 05:27:56,652 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 605 transitions. Word has length 636 [2022-04-05 05:27:56,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:27:56,653 INFO L478 AbstractCegarLoop]: Abstraction has 589 states and 605 transitions. [2022-04-05 05:27:56,653 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 192 states have (on average 2.7135416666666665) internal successors, (521), 191 states have internal predecessors, (521), 126 states have call successors, (129), 3 states have call predecessors, (129), 2 states have return successors, (127), 126 states have call predecessors, (127), 126 states have call successors, (127) [2022-04-05 05:27:56,653 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 605 transitions. [2022-04-05 05:27:56,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 639 [2022-04-05 05:27:56,656 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:27:56,656 INFO L499 BasicCegarLoop]: trace histogram [63, 63, 63, 63, 62, 62, 62, 62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:27:56,676 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2022-04-05 05:27:56,856 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:27:56,857 INFO L403 AbstractCegarLoop]: === Iteration 77 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:27:56,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:27:56,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1168256295, now seen corresponding path program 74 times [2022-04-05 05:27:56,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:27:56,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626717824] [2022-04-05 05:27:56,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:27:56,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:27:56,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:00,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:28:00,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:00,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-04-05 05:28:00,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:00,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-04-05 05:28:00,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:00,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-04-05 05:28:00,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:00,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-04-05 05:28:00,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:00,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-04-05 05:28:00,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:00,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-04-05 05:28:00,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:00,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-04-05 05:28:00,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:00,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-04-05 05:28:00,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:00,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-04-05 05:28:00,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:00,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-04-05 05:28:00,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:00,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-04-05 05:28:00,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:00,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-04-05 05:28:00,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:00,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-04-05 05:28:00,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:00,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-04-05 05:28:00,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:00,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-04-05 05:28:00,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:00,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-04-05 05:28:00,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:00,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-04-05 05:28:00,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:00,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-04-05 05:28:00,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:00,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-04-05 05:28:00,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:00,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-04-05 05:28:00,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:00,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-04-05 05:28:00,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:00,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-04-05 05:28:00,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:00,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-04-05 05:28:00,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:00,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-04-05 05:28:00,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:00,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-04-05 05:28:00,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:00,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-04-05 05:28:00,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:00,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-04-05 05:28:00,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:00,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-04-05 05:28:00,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:00,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-04-05 05:28:00,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:00,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-04-05 05:28:00,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:00,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-04-05 05:28:00,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:00,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-04-05 05:28:00,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:00,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-04-05 05:28:00,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:00,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-04-05 05:28:00,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:00,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-04-05 05:28:00,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:00,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-04-05 05:28:00,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:00,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-04-05 05:28:00,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:00,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-04-05 05:28:00,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:00,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2022-04-05 05:28:00,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:00,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2022-04-05 05:28:00,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:00,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2022-04-05 05:28:00,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:00,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2022-04-05 05:28:00,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:00,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2022-04-05 05:28:00,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:00,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2022-04-05 05:28:00,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:00,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2022-04-05 05:28:00,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:00,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2022-04-05 05:28:00,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:00,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2022-04-05 05:28:00,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:00,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2022-04-05 05:28:00,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:00,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 522 [2022-04-05 05:28:00,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:00,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 530 [2022-04-05 05:28:00,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:00,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2022-04-05 05:28:00,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:00,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 546 [2022-04-05 05:28:00,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:00,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2022-04-05 05:28:00,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:00,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 562 [2022-04-05 05:28:00,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:00,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 570 [2022-04-05 05:28:00,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:00,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 578 [2022-04-05 05:28:00,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:00,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 586 [2022-04-05 05:28:00,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:00,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 594 [2022-04-05 05:28:00,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:00,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2022-04-05 05:28:00,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:00,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 610 [2022-04-05 05:28:00,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:00,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 618 [2022-04-05 05:28:00,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:00,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 626 [2022-04-05 05:28:00,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:00,515 INFO L134 CoverageAnalysis]: Checked inductivity of 19282 backedges. 7629 proven. 4089 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2022-04-05 05:28:00,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:28:00,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626717824] [2022-04-05 05:28:00,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626717824] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:28:00,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2147332147] [2022-04-05 05:28:00,515 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 05:28:00,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:28:00,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:28:00,516 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 05:28:00,516 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 05:28:00,688 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 05:28:00,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:28:00,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 1742 conjuncts, 128 conjunts are in the unsatisfiable core [2022-04-05 05:28:00,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:28:04,793 INFO L134 CoverageAnalysis]: Checked inductivity of 19282 backedges. 4030 proven. 7688 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2022-04-05 05:28:04,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:28:05,624 INFO L134 CoverageAnalysis]: Checked inductivity of 19282 backedges. 4030 proven. 7688 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2022-04-05 05:28:05,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2147332147] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:28:05,624 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:28:05,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [129, 67, 67] total 194 [2022-04-05 05:28:05,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364862796] [2022-04-05 05:28:05,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:28:05,625 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 194 states [2022-04-05 05:28:05,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:28:05,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 194 interpolants. [2022-04-05 05:28:05,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6182, Invalid=31260, Unknown=0, NotChecked=0, Total=37442 [2022-04-05 05:28:05,630 INFO L87 Difference]: Start difference. First operand 589 states and 605 transitions. Second operand has 194 states, 194 states have (on average 3.345360824742268) internal successors, (649), 192 states have internal predecessors, (649), 127 states have call successors, (129), 4 states have call predecessors, (129), 1 states have return successors, (125), 125 states have call predecessors, (125), 125 states have call successors, (125) [2022-04-05 05:28:16,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:28:16,612 INFO L93 Difference]: Finished difference Result 1111 states and 1317 transitions. [2022-04-05 05:28:16,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 256 states. [2022-04-05 05:28:16,612 INFO L78 Accepts]: Start accepts. Automaton has has 194 states, 194 states have (on average 3.345360824742268) internal successors, (649), 192 states have internal predecessors, (649), 127 states have call successors, (129), 4 states have call predecessors, (129), 1 states have return successors, (125), 125 states have call predecessors, (125), 125 states have call successors, (125) Word has length 638 [2022-04-05 05:28:16,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:28:16,614 INFO L225 Difference]: With dead ends: 1111 [2022-04-05 05:28:16,614 INFO L226 Difference]: Without dead ends: 852 [2022-04-05 05:28:16,622 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1847 GetRequests, 1401 SyntacticMatches, 1 SemanticMatches, 445 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70864 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=33023, Invalid=166339, Unknown=0, NotChecked=0, Total=199362 [2022-04-05 05:28:16,623 INFO L913 BasicCegarLoop]: 198 mSDtfsCounter, 2241 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 7929 mSolverCounterSat, 1821 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2242 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 9750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1821 IncrementalHoareTripleChecker+Valid, 7929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-04-05 05:28:16,623 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2242 Valid, 265 Invalid, 9750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1821 Valid, 7929 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-04-05 05:28:16,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2022-04-05 05:28:16,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 599. [2022-04-05 05:28:16,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 480 states have (on average 1.0083333333333333) internal successors, (484), 481 states have internal predecessors, (484), 66 states have call successors, (66), 53 states have call predecessors, (66), 52 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) [2022-04-05 05:28:16,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 615 transitions. [2022-04-05 05:28:16,671 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 615 transitions. Word has length 638 [2022-04-05 05:28:16,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:28:16,671 INFO L478 AbstractCegarLoop]: Abstraction has 599 states and 615 transitions. [2022-04-05 05:28:16,671 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 194 states, 194 states have (on average 3.345360824742268) internal successors, (649), 192 states have internal predecessors, (649), 127 states have call successors, (129), 4 states have call predecessors, (129), 1 states have return successors, (125), 125 states have call predecessors, (125), 125 states have call successors, (125) [2022-04-05 05:28:16,671 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 615 transitions. [2022-04-05 05:28:16,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 649 [2022-04-05 05:28:16,674 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:28:16,674 INFO L499 BasicCegarLoop]: trace histogram [64, 64, 64, 64, 63, 63, 63, 63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:28:16,691 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 05:28:16,875 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:28:16,875 INFO L403 AbstractCegarLoop]: === Iteration 78 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:28:16,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:28:16,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1475078818, now seen corresponding path program 75 times [2022-04-05 05:28:16,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:28:16,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526406878] [2022-04-05 05:28:16,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:28:16,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:28:16,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:20,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:28:20,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:20,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-04-05 05:28:20,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:20,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-04-05 05:28:20,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:20,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-04-05 05:28:20,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:20,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-04-05 05:28:20,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:20,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-04-05 05:28:20,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:20,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-04-05 05:28:20,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:20,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-04-05 05:28:20,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:20,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-04-05 05:28:20,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:20,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-04-05 05:28:20,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:20,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-04-05 05:28:20,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:20,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-04-05 05:28:20,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:20,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-04-05 05:28:20,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:20,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-04-05 05:28:20,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:20,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-04-05 05:28:20,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:20,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-04-05 05:28:20,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:20,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-04-05 05:28:20,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:20,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-04-05 05:28:20,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:20,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-04-05 05:28:20,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:20,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-04-05 05:28:20,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:20,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-04-05 05:28:20,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:20,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-04-05 05:28:20,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:20,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-04-05 05:28:20,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:20,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-04-05 05:28:20,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:20,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-04-05 05:28:20,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:20,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-04-05 05:28:20,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:20,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-04-05 05:28:20,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:20,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-04-05 05:28:20,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:20,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-04-05 05:28:20,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:20,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-04-05 05:28:20,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:20,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-04-05 05:28:20,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:20,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-04-05 05:28:20,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:20,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-04-05 05:28:20,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:20,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-04-05 05:28:20,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:20,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-04-05 05:28:20,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:20,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-04-05 05:28:20,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:20,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2022-04-05 05:28:20,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:20,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2022-04-05 05:28:20,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:20,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2022-04-05 05:28:20,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:20,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2022-04-05 05:28:20,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:20,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2022-04-05 05:28:20,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:20,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2022-04-05 05:28:20,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:20,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2022-04-05 05:28:20,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:20,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2022-04-05 05:28:20,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:20,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2022-04-05 05:28:20,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:20,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 492 [2022-04-05 05:28:20,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:20,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 500 [2022-04-05 05:28:20,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:20,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2022-04-05 05:28:20,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:20,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2022-04-05 05:28:20,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:20,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 524 [2022-04-05 05:28:20,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:20,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 532 [2022-04-05 05:28:20,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:20,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2022-04-05 05:28:20,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:20,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 548 [2022-04-05 05:28:20,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:20,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 556 [2022-04-05 05:28:20,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:20,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 564 [2022-04-05 05:28:20,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:20,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 572 [2022-04-05 05:28:20,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:20,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 580 [2022-04-05 05:28:20,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:20,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 588 [2022-04-05 05:28:20,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:20,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 596 [2022-04-05 05:28:20,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:20,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 604 [2022-04-05 05:28:20,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:20,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 612 [2022-04-05 05:28:20,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:20,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 620 [2022-04-05 05:28:20,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:20,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 628 [2022-04-05 05:28:20,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:20,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 636 [2022-04-05 05:28:20,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:20,630 INFO L134 CoverageAnalysis]: Checked inductivity of 19908 backedges. 7878 proven. 4218 refuted. 0 times theorem prover too weak. 7812 trivial. 0 not checked. [2022-04-05 05:28:20,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:28:20,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526406878] [2022-04-05 05:28:20,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526406878] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:28:20,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723983157] [2022-04-05 05:28:20,630 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-05 05:28:20,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:28:20,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:28:20,631 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 05:28:20,632 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 05:28:20,929 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 64 check-sat command(s) [2022-04-05 05:28:20,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:28:20,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 1769 conjuncts, 130 conjunts are in the unsatisfiable core [2022-04-05 05:28:20,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:28:25,105 INFO L134 CoverageAnalysis]: Checked inductivity of 19908 backedges. 4158 proven. 7938 refuted. 0 times theorem prover too weak. 7812 trivial. 0 not checked. [2022-04-05 05:28:25,106 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:28:25,926 INFO L134 CoverageAnalysis]: Checked inductivity of 19908 backedges. 4158 proven. 7938 refuted. 0 times theorem prover too weak. 7812 trivial. 0 not checked. [2022-04-05 05:28:25,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1723983157] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:28:25,926 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:28:25,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [131, 68, 68] total 197 [2022-04-05 05:28:25,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430979077] [2022-04-05 05:28:25,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:28:25,927 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 197 states [2022-04-05 05:28:25,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:28:25,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 197 interpolants. [2022-04-05 05:28:25,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6376, Invalid=32236, Unknown=0, NotChecked=0, Total=38612 [2022-04-05 05:28:25,931 INFO L87 Difference]: Start difference. First operand 599 states and 615 transitions. Second operand has 197 states, 197 states have (on average 3.3451776649746194) internal successors, (659), 195 states have internal predecessors, (659), 129 states have call successors, (131), 4 states have call predecessors, (131), 1 states have return successors, (127), 127 states have call predecessors, (127), 127 states have call successors, (127) [2022-04-05 05:28:37,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:28:37,362 INFO L93 Difference]: Finished difference Result 1129 states and 1338 transitions. [2022-04-05 05:28:37,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 260 states. [2022-04-05 05:28:37,363 INFO L78 Accepts]: Start accepts. Automaton has has 197 states, 197 states have (on average 3.3451776649746194) internal successors, (659), 195 states have internal predecessors, (659), 129 states have call successors, (131), 4 states have call predecessors, (131), 1 states have return successors, (127), 127 states have call predecessors, (127), 127 states have call successors, (127) Word has length 648 [2022-04-05 05:28:37,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:28:37,364 INFO L225 Difference]: With dead ends: 1129 [2022-04-05 05:28:37,364 INFO L226 Difference]: Without dead ends: 866 [2022-04-05 05:28:37,375 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1876 GetRequests, 1423 SyntacticMatches, 1 SemanticMatches, 452 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73141 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=34059, Invalid=171603, Unknown=0, NotChecked=0, Total=205662 [2022-04-05 05:28:37,375 INFO L913 BasicCegarLoop]: 201 mSDtfsCounter, 2374 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 8715 mSolverCounterSat, 2229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2375 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 10944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2229 IncrementalHoareTripleChecker+Valid, 8715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-04-05 05:28:37,375 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2375 Valid, 293 Invalid, 10944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2229 Valid, 8715 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-04-05 05:28:37,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2022-04-05 05:28:37,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 609. [2022-04-05 05:28:37,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 609 states, 488 states have (on average 1.0081967213114753) internal successors, (492), 489 states have internal predecessors, (492), 67 states have call successors, (67), 54 states have call predecessors, (67), 53 states have return successors, (66), 65 states have call predecessors, (66), 66 states have call successors, (66) [2022-04-05 05:28:37,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 625 transitions. [2022-04-05 05:28:37,430 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 625 transitions. Word has length 648 [2022-04-05 05:28:37,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:28:37,430 INFO L478 AbstractCegarLoop]: Abstraction has 609 states and 625 transitions. [2022-04-05 05:28:37,430 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 197 states, 197 states have (on average 3.3451776649746194) internal successors, (659), 195 states have internal predecessors, (659), 129 states have call successors, (131), 4 states have call predecessors, (131), 1 states have return successors, (127), 127 states have call predecessors, (127), 127 states have call successors, (127) [2022-04-05 05:28:37,430 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 625 transitions. [2022-04-05 05:28:37,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 659 [2022-04-05 05:28:37,434 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:28:37,435 INFO L499 BasicCegarLoop]: trace histogram [65, 65, 65, 65, 64, 64, 64, 64, 64, 64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:28:37,478 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2022-04-05 05:28:37,647 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,SelfDestructingSolverStorable77 [2022-04-05 05:28:37,647 INFO L403 AbstractCegarLoop]: === Iteration 79 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:28:37,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:28:37,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1326209323, now seen corresponding path program 76 times [2022-04-05 05:28:37,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:28:37,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139656737] [2022-04-05 05:28:37,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:28:37,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:28:37,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:41,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:28:41,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:41,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-04-05 05:28:41,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:41,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-04-05 05:28:41,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:41,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-04-05 05:28:41,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:41,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-04-05 05:28:41,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:41,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-04-05 05:28:41,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:41,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-04-05 05:28:41,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:41,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-04-05 05:28:41,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:41,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-04-05 05:28:41,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:41,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-04-05 05:28:41,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:41,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-04-05 05:28:41,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:41,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-04-05 05:28:41,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:41,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-04-05 05:28:41,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:41,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-04-05 05:28:41,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:41,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-04-05 05:28:41,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:41,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-04-05 05:28:41,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:41,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-04-05 05:28:41,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:41,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-04-05 05:28:41,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:41,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-04-05 05:28:41,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:41,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-04-05 05:28:41,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:41,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-04-05 05:28:41,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:41,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-04-05 05:28:41,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:41,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-04-05 05:28:41,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:41,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-04-05 05:28:41,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:41,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-04-05 05:28:41,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:41,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-04-05 05:28:41,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:41,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-04-05 05:28:41,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:41,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-04-05 05:28:41,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:41,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-04-05 05:28:41,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:41,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-04-05 05:28:41,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:41,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-04-05 05:28:41,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:41,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-04-05 05:28:41,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:41,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-04-05 05:28:41,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:41,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-04-05 05:28:41,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:41,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-04-05 05:28:41,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:41,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-04-05 05:28:41,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:41,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-04-05 05:28:41,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:41,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-04-05 05:28:41,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:41,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-04-05 05:28:41,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:41,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2022-04-05 05:28:41,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:41,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2022-04-05 05:28:41,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:41,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2022-04-05 05:28:41,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:41,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2022-04-05 05:28:41,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:41,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2022-04-05 05:28:41,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:41,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2022-04-05 05:28:41,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:41,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2022-04-05 05:28:41,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:41,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2022-04-05 05:28:41,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:41,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 510 [2022-04-05 05:28:41,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:41,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 518 [2022-04-05 05:28:41,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:41,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2022-04-05 05:28:41,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:41,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 534 [2022-04-05 05:28:41,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:41,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 542 [2022-04-05 05:28:41,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:41,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 550 [2022-04-05 05:28:41,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:41,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 558 [2022-04-05 05:28:41,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:41,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 566 [2022-04-05 05:28:41,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:41,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 574 [2022-04-05 05:28:41,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:41,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 582 [2022-04-05 05:28:41,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:41,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 590 [2022-04-05 05:28:41,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:41,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 598 [2022-04-05 05:28:41,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:41,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 606 [2022-04-05 05:28:41,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:41,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 614 [2022-04-05 05:28:41,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:41,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 622 [2022-04-05 05:28:41,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:41,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 630 [2022-04-05 05:28:41,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:41,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 638 [2022-04-05 05:28:41,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:41,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2022-04-05 05:28:41,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:28:41,692 INFO L134 CoverageAnalysis]: Checked inductivity of 20544 backedges. 8131 proven. 4349 refuted. 0 times theorem prover too weak. 8064 trivial. 0 not checked. [2022-04-05 05:28:41,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:28:41,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139656737] [2022-04-05 05:28:41,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139656737] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:28:41,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878260521] [2022-04-05 05:28:41,692 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-05 05:28:41,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:28:41,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:28:41,693 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 05:28:41,694 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 05:28:41,878 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-05 05:28:41,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:28:41,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 1796 conjuncts, 132 conjunts are in the unsatisfiable core [2022-04-05 05:28:41,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:28:46,197 INFO L134 CoverageAnalysis]: Checked inductivity of 20544 backedges. 4288 proven. 8192 refuted. 0 times theorem prover too weak. 8064 trivial. 0 not checked. [2022-04-05 05:28:46,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:28:47,046 INFO L134 CoverageAnalysis]: Checked inductivity of 20544 backedges. 4288 proven. 8192 refuted. 0 times theorem prover too weak. 8064 trivial. 0 not checked. [2022-04-05 05:28:47,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878260521] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:28:47,046 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:28:47,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [133, 69, 69] total 200 [2022-04-05 05:28:47,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405394286] [2022-04-05 05:28:47,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:28:47,047 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 200 states [2022-04-05 05:28:47,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:28:47,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 200 interpolants. [2022-04-05 05:28:47,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6573, Invalid=33227, Unknown=0, NotChecked=0, Total=39800 [2022-04-05 05:28:47,050 INFO L87 Difference]: Start difference. First operand 609 states and 625 transitions. Second operand has 200 states, 200 states have (on average 3.345) internal successors, (669), 198 states have internal predecessors, (669), 131 states have call successors, (133), 4 states have call predecessors, (133), 1 states have return successors, (129), 129 states have call predecessors, (129), 129 states have call successors, (129) [2022-04-05 05:28:58,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:28:58,487 INFO L93 Difference]: Finished difference Result 1147 states and 1359 transitions. [2022-04-05 05:28:58,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 264 states. [2022-04-05 05:28:58,488 INFO L78 Accepts]: Start accepts. Automaton has has 200 states, 200 states have (on average 3.345) internal successors, (669), 198 states have internal predecessors, (669), 131 states have call successors, (133), 4 states have call predecessors, (133), 1 states have return successors, (129), 129 states have call predecessors, (129), 129 states have call successors, (129) Word has length 658 [2022-04-05 05:28:58,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:28:58,489 INFO L225 Difference]: With dead ends: 1147 [2022-04-05 05:28:58,489 INFO L226 Difference]: Without dead ends: 880 [2022-04-05 05:28:58,500 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1905 GetRequests, 1445 SyntacticMatches, 1 SemanticMatches, 459 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75454 ImplicationChecksByTransitivity, 13.8s TimeCoverageRelationStatistics Valid=35111, Invalid=176949, Unknown=0, NotChecked=0, Total=212060 [2022-04-05 05:28:58,500 INFO L913 BasicCegarLoop]: 204 mSDtfsCounter, 2503 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 8264 mSolverCounterSat, 2044 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2504 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 10308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2044 IncrementalHoareTripleChecker+Valid, 8264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-04-05 05:28:58,501 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2504 Valid, 296 Invalid, 10308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2044 Valid, 8264 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-04-05 05:28:58,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2022-04-05 05:28:58,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 619. [2022-04-05 05:28:58,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 619 states, 496 states have (on average 1.0080645161290323) internal successors, (500), 497 states have internal predecessors, (500), 68 states have call successors, (68), 55 states have call predecessors, (68), 54 states have return successors, (67), 66 states have call predecessors, (67), 67 states have call successors, (67) [2022-04-05 05:28:58,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 635 transitions. [2022-04-05 05:28:58,580 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 635 transitions. Word has length 658 [2022-04-05 05:28:58,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:28:58,580 INFO L478 AbstractCegarLoop]: Abstraction has 619 states and 635 transitions. [2022-04-05 05:28:58,581 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 200 states, 200 states have (on average 3.345) internal successors, (669), 198 states have internal predecessors, (669), 131 states have call successors, (133), 4 states have call predecessors, (133), 1 states have return successors, (129), 129 states have call predecessors, (129), 129 states have call successors, (129) [2022-04-05 05:28:58,581 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 635 transitions. [2022-04-05 05:28:58,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 669 [2022-04-05 05:28:58,584 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:28:58,584 INFO L499 BasicCegarLoop]: trace histogram [66, 66, 66, 66, 65, 65, 65, 65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:28:58,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2022-04-05 05:28:58,799 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,SelfDestructingSolverStorable78 [2022-04-05 05:28:58,799 INFO L403 AbstractCegarLoop]: === Iteration 80 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:28:58,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:28:58,800 INFO L85 PathProgramCache]: Analyzing trace with hash -154381940, now seen corresponding path program 77 times [2022-04-05 05:28:58,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:28:58,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090700118] [2022-04-05 05:28:58,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:28:58,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:28:58,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:29:02,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-04-05 05:29:02,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-04-05 05:29:02,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-04-05 05:29:02,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-04-05 05:29:02,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-04-05 05:29:02,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-04-05 05:29:02,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-04-05 05:29:02,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-04-05 05:29:02,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-04-05 05:29:02,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-04-05 05:29:02,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-04-05 05:29:02,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-04-05 05:29:02,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-04-05 05:29:02,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-04-05 05:29:02,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-04-05 05:29:02,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-04-05 05:29:02,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-04-05 05:29:02,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-04-05 05:29:02,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-04-05 05:29:02,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-04-05 05:29:02,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-04-05 05:29:02,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-04-05 05:29:02,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-04-05 05:29:02,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-04-05 05:29:02,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-04-05 05:29:02,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-04-05 05:29:02,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-04-05 05:29:02,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-04-05 05:29:02,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-04-05 05:29:02,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-04-05 05:29:02,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-04-05 05:29:02,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-04-05 05:29:02,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-04-05 05:29:02,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-04-05 05:29:02,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2022-04-05 05:29:02,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2022-04-05 05:29:02,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2022-04-05 05:29:02,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2022-04-05 05:29:02,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2022-04-05 05:29:02,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2022-04-05 05:29:02,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2022-04-05 05:29:02,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2022-04-05 05:29:02,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2022-04-05 05:29:02,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2022-04-05 05:29:02,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2022-04-05 05:29:02,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2022-04-05 05:29:02,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 512 [2022-04-05 05:29:02,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 520 [2022-04-05 05:29:02,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 528 [2022-04-05 05:29:02,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 536 [2022-04-05 05:29:02,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 544 [2022-04-05 05:29:02,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 552 [2022-04-05 05:29:02,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 560 [2022-04-05 05:29:02,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2022-04-05 05:29:02,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 576 [2022-04-05 05:29:02,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 584 [2022-04-05 05:29:02,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 592 [2022-04-05 05:29:02,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 600 [2022-04-05 05:29:02,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 608 [2022-04-05 05:29:02,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 616 [2022-04-05 05:29:02,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 624 [2022-04-05 05:29:02,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 632 [2022-04-05 05:29:02,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 640 [2022-04-05 05:29:02,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 648 [2022-04-05 05:29:02,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 656 [2022-04-05 05:29:02,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:02,825 INFO L134 CoverageAnalysis]: Checked inductivity of 21190 backedges. 8388 proven. 4482 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2022-04-05 05:29:02,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:29:02,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090700118] [2022-04-05 05:29:02,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090700118] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:29:02,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028344724] [2022-04-05 05:29:02,825 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-05 05:29:02,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:29:02,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:29:02,826 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 05:29:02,827 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 05:29:03,152 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 66 check-sat command(s) [2022-04-05 05:29:03,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:29:03,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 1823 conjuncts, 134 conjunts are in the unsatisfiable core [2022-04-05 05:29:03,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:29:08,965 INFO L134 CoverageAnalysis]: Checked inductivity of 21190 backedges. 8580 proven. 4290 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2022-04-05 05:29:08,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:29:09,832 INFO L134 CoverageAnalysis]: Checked inductivity of 21190 backedges. 8580 proven. 4290 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2022-04-05 05:29:09,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028344724] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:29:09,833 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:29:09,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [135, 134, 134] total 203 [2022-04-05 05:29:09,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788768918] [2022-04-05 05:29:09,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:29:09,834 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 203 states [2022-04-05 05:29:09,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:29:09,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 203 interpolants. [2022-04-05 05:29:09,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9117, Invalid=31889, Unknown=0, NotChecked=0, Total=41006 [2022-04-05 05:29:09,837 INFO L87 Difference]: Start difference. First operand 619 states and 635 transitions. Second operand has 203 states, 203 states have (on average 2.684729064039409) internal successors, (545), 202 states have internal predecessors, (545), 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 05:29:16,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:29:16,918 INFO L93 Difference]: Finished difference Result 1156 states and 1370 transitions. [2022-04-05 05:29:16,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2022-04-05 05:29:16,919 INFO L78 Accepts]: Start accepts. Automaton has has 203 states, 203 states have (on average 2.684729064039409) internal successors, (545), 202 states have internal predecessors, (545), 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 668 [2022-04-05 05:29:16,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:29:16,920 INFO L225 Difference]: With dead ends: 1156 [2022-04-05 05:29:16,920 INFO L226 Difference]: Without dead ends: 885 [2022-04-05 05:29:16,926 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1799 GetRequests, 1466 SyntacticMatches, 0 SemanticMatches, 333 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30870 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=24794, Invalid=87096, Unknown=0, NotChecked=0, Total=111890 [2022-04-05 05:29:16,927 INFO L913 BasicCegarLoop]: 144 mSDtfsCounter, 1561 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 4037 mSolverCounterSat, 1236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1562 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 5273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1236 IncrementalHoareTripleChecker+Valid, 4037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-04-05 05:29:16,927 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1562 Valid, 211 Invalid, 5273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1236 Valid, 4037 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-04-05 05:29:16,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2022-04-05 05:29:16,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 621. [2022-04-05 05:29:16,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 621 states, 498 states have (on average 1.0080321285140563) internal successors, (502), 499 states have internal predecessors, (502), 68 states have call successors, (68), 55 states have call predecessors, (68), 54 states have return successors, (67), 66 states have call predecessors, (67), 67 states have call successors, (67) [2022-04-05 05:29:17,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 637 transitions. [2022-04-05 05:29:17,000 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 637 transitions. Word has length 668 [2022-04-05 05:29:17,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:29:17,000 INFO L478 AbstractCegarLoop]: Abstraction has 621 states and 637 transitions. [2022-04-05 05:29:17,000 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 203 states, 203 states have (on average 2.684729064039409) internal successors, (545), 202 states have internal predecessors, (545), 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 05:29:17,000 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 637 transitions. [2022-04-05 05:29:17,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 671 [2022-04-05 05:29:17,004 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:29:17,004 INFO L499 BasicCegarLoop]: trace histogram [67, 66, 66, 66, 66, 65, 65, 65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:29:17,022 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 05:29:17,204 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:29:17,204 INFO L403 AbstractCegarLoop]: === Iteration 81 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:29:17,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:29:17,205 INFO L85 PathProgramCache]: Analyzing trace with hash -255257105, now seen corresponding path program 78 times [2022-04-05 05:29:17,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:29:17,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178021026] [2022-04-05 05:29:17,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:29:17,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:29:17,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:18,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:29:18,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:18,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-04-05 05:29:18,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:18,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-04-05 05:29:18,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:18,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-04-05 05:29:18,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:18,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-04-05 05:29:18,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:18,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-04-05 05:29:18,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:18,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-04-05 05:29:18,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:18,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-04-05 05:29:18,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:18,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-04-05 05:29:18,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:18,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-04-05 05:29:18,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:18,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-04-05 05:29:18,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:18,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-04-05 05:29:18,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:18,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-04-05 05:29:18,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:18,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-04-05 05:29:18,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:18,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-04-05 05:29:18,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:18,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-04-05 05:29:18,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:18,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-04-05 05:29:18,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:18,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-04-05 05:29:18,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:18,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-04-05 05:29:18,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:18,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-04-05 05:29:18,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:18,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-04-05 05:29:18,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:18,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-04-05 05:29:18,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:18,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-04-05 05:29:18,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:18,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-04-05 05:29:18,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:18,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-04-05 05:29:18,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:18,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-04-05 05:29:18,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:18,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-04-05 05:29:18,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:18,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-04-05 05:29:18,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:18,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-04-05 05:29:18,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:18,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-04-05 05:29:18,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:18,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-04-05 05:29:18,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:18,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-04-05 05:29:18,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:18,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-04-05 05:29:18,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:18,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-04-05 05:29:18,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:18,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-04-05 05:29:18,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:18,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-04-05 05:29:18,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:18,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-04-05 05:29:18,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:18,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-04-05 05:29:18,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:18,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2022-04-05 05:29:18,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:18,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2022-04-05 05:29:18,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:18,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2022-04-05 05:29:18,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:18,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2022-04-05 05:29:18,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:18,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2022-04-05 05:29:18,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:18,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2022-04-05 05:29:18,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:18,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2022-04-05 05:29:18,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:18,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2022-04-05 05:29:18,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:18,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2022-04-05 05:29:18,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:18,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2022-04-05 05:29:18,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:18,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 522 [2022-04-05 05:29:18,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:18,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 530 [2022-04-05 05:29:18,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:18,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2022-04-05 05:29:18,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:18,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 546 [2022-04-05 05:29:18,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:18,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2022-04-05 05:29:18,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:18,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 562 [2022-04-05 05:29:18,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:18,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 570 [2022-04-05 05:29:18,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:18,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 578 [2022-04-05 05:29:18,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:18,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 586 [2022-04-05 05:29:18,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:18,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 594 [2022-04-05 05:29:18,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:18,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2022-04-05 05:29:18,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:18,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 610 [2022-04-05 05:29:18,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:18,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 618 [2022-04-05 05:29:18,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:18,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 626 [2022-04-05 05:29:18,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:18,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 634 [2022-04-05 05:29:18,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:18,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 642 [2022-04-05 05:29:18,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:18,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 650 [2022-04-05 05:29:18,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:18,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 658 [2022-04-05 05:29:18,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:18,928 INFO L134 CoverageAnalysis]: Checked inductivity of 21322 backedges. 4420 proven. 8582 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2022-04-05 05:29:18,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:29:18,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178021026] [2022-04-05 05:29:18,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178021026] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:29:18,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726764578] [2022-04-05 05:29:18,928 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-05 05:29:18,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:29:18,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:29:18,929 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 05:29:18,929 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 05:29:19,282 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 67 check-sat command(s) [2022-04-05 05:29:19,282 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:29:19,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 1833 conjuncts, 135 conjunts are in the unsatisfiable core [2022-04-05 05:29:19,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:29:20,110 INFO L134 CoverageAnalysis]: Checked inductivity of 21322 backedges. 4552 proven. 8450 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2022-04-05 05:29:20,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:29:20,968 INFO L134 CoverageAnalysis]: Checked inductivity of 21322 backedges. 4552 proven. 8450 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2022-04-05 05:29:20,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726764578] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:29:20,968 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:29:20,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 71, 71] total 76 [2022-04-05 05:29:20,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096721564] [2022-04-05 05:29:20,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:29:20,969 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2022-04-05 05:29:20,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:29:20,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2022-04-05 05:29:20,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2431, Invalid=3269, Unknown=0, NotChecked=0, Total=5700 [2022-04-05 05:29:20,970 INFO L87 Difference]: Start difference. First operand 621 states and 637 transitions. Second operand has 76 states, 76 states have (on average 4.815789473684211) internal successors, (366), 73 states have internal predecessors, (366), 68 states have call successors, (72), 4 states have call predecessors, (72), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2022-04-05 05:29:22,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:29:22,967 INFO L93 Difference]: Finished difference Result 640 states and 658 transitions. [2022-04-05 05:29:22,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-04-05 05:29:22,967 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 4.815789473684211) internal successors, (366), 73 states have internal predecessors, (366), 68 states have call successors, (72), 4 states have call predecessors, (72), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) Word has length 670 [2022-04-05 05:29:22,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:29:22,968 INFO L225 Difference]: With dead ends: 640 [2022-04-05 05:29:22,969 INFO L226 Difference]: Without dead ends: 638 [2022-04-05 05:29:22,970 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1680 GetRequests, 1533 SyntacticMatches, 1 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3807 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=7285, Invalid=14471, Unknown=0, NotChecked=0, Total=21756 [2022-04-05 05:29:22,970 INFO L913 BasicCegarLoop]: 87 mSDtfsCounter, 315 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 2408 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 2822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 2408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-05 05:29:22,971 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [316 Valid, 134 Invalid, 2822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 2408 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-05 05:29:22,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2022-04-05 05:29:23,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 633. [2022-04-05 05:29:23,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 633 states, 507 states have (on average 1.0078895463510849) internal successors, (511), 508 states have internal predecessors, (511), 70 states have call successors, (70), 56 states have call predecessors, (70), 55 states have return successors, (69), 68 states have call predecessors, (69), 69 states have call successors, (69) [2022-04-05 05:29:23,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 650 transitions. [2022-04-05 05:29:23,023 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 650 transitions. Word has length 670 [2022-04-05 05:29:23,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:29:23,023 INFO L478 AbstractCegarLoop]: Abstraction has 633 states and 650 transitions. [2022-04-05 05:29:23,023 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 4.815789473684211) internal successors, (366), 73 states have internal predecessors, (366), 68 states have call successors, (72), 4 states have call predecessors, (72), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2022-04-05 05:29:23,023 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 650 transitions. [2022-04-05 05:29:23,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 687 [2022-04-05 05:29:23,026 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:29:23,027 INFO L499 BasicCegarLoop]: trace histogram [68, 68, 68, 67, 67, 67, 67, 67, 67, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:29:23,046 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 05:29:23,227 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:29:23,228 INFO L403 AbstractCegarLoop]: === Iteration 82 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:29:23,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:29:23,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1138548457, now seen corresponding path program 79 times [2022-04-05 05:29:23,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:29:23,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145591879] [2022-04-05 05:29:23,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:29:23,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:29:23,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:29:27,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-04-05 05:29:27,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-04-05 05:29:27,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-04-05 05:29:27,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-04-05 05:29:27,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-04-05 05:29:27,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-04-05 05:29:27,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-04-05 05:29:27,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-04-05 05:29:27,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-04-05 05:29:27,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-04-05 05:29:27,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-04-05 05:29:27,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-04-05 05:29:27,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-04-05 05:29:27,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-04-05 05:29:27,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-04-05 05:29:27,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-04-05 05:29:27,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-04-05 05:29:27,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-04-05 05:29:27,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-04-05 05:29:27,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-04-05 05:29:27,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-04-05 05:29:27,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-04-05 05:29:27,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-04-05 05:29:27,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-04-05 05:29:27,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-04-05 05:29:27,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-04-05 05:29:27,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-04-05 05:29:27,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-04-05 05:29:27,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-04-05 05:29:27,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-04-05 05:29:27,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-04-05 05:29:27,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-04-05 05:29:27,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-04-05 05:29:27,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-04-05 05:29:27,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-04-05 05:29:27,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-04-05 05:29:27,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-04-05 05:29:27,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2022-04-05 05:29:27,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2022-04-05 05:29:27,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2022-04-05 05:29:27,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2022-04-05 05:29:27,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2022-04-05 05:29:27,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2022-04-05 05:29:27,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2022-04-05 05:29:27,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2022-04-05 05:29:27,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2022-04-05 05:29:27,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2022-04-05 05:29:27,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 522 [2022-04-05 05:29:27,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 530 [2022-04-05 05:29:27,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2022-04-05 05:29:27,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 546 [2022-04-05 05:29:27,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2022-04-05 05:29:27,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 562 [2022-04-05 05:29:27,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 570 [2022-04-05 05:29:27,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 578 [2022-04-05 05:29:27,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 586 [2022-04-05 05:29:27,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 594 [2022-04-05 05:29:27,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2022-04-05 05:29:27,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 610 [2022-04-05 05:29:27,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 618 [2022-04-05 05:29:27,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 626 [2022-04-05 05:29:27,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 634 [2022-04-05 05:29:27,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 642 [2022-04-05 05:29:27,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 650 [2022-04-05 05:29:27,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 658 [2022-04-05 05:29:27,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 666 [2022-04-05 05:29:27,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 674 [2022-04-05 05:29:27,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,476 INFO L134 CoverageAnalysis]: Checked inductivity of 22378 backedges. 8914 proven. 4620 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2022-04-05 05:29:27,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:29:27,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145591879] [2022-04-05 05:29:27,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145591879] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:29:27,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022137684] [2022-04-05 05:29:27,476 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-05 05:29:27,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:29:27,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:29:27,477 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 05:29:27,478 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 05:29:27,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:27,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 1867 conjuncts, 136 conjunts are in the unsatisfiable core [2022-04-05 05:29:27,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:29:33,576 INFO L134 CoverageAnalysis]: Checked inductivity of 22378 backedges. 9372 proven. 4422 refuted. 0 times theorem prover too weak. 8584 trivial. 0 not checked. [2022-04-05 05:29:33,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:29:34,464 INFO L134 CoverageAnalysis]: Checked inductivity of 22378 backedges. 9110 proven. 4422 refuted. 0 times theorem prover too weak. 8846 trivial. 0 not checked. [2022-04-05 05:29:34,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022137684] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:29:34,465 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:29:34,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [138, 136, 136] total 207 [2022-04-05 05:29:34,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889939852] [2022-04-05 05:29:34,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:29:34,466 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 207 states [2022-04-05 05:29:34,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:29:34,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 207 interpolants. [2022-04-05 05:29:34,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9458, Invalid=33184, Unknown=0, NotChecked=0, Total=42642 [2022-04-05 05:29:34,469 INFO L87 Difference]: Start difference. First operand 633 states and 650 transitions. Second operand has 207 states, 207 states have (on average 2.710144927536232) internal successors, (561), 206 states have internal predecessors, (561), 136 states have call successors, (139), 3 states have call predecessors, (139), 2 states have return successors, (137), 136 states have call predecessors, (137), 136 states have call successors, (137) [2022-04-05 05:29:41,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:29:41,585 INFO L93 Difference]: Finished difference Result 1184 states and 1402 transitions. [2022-04-05 05:29:41,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2022-04-05 05:29:41,585 INFO L78 Accepts]: Start accepts. Automaton has has 207 states, 207 states have (on average 2.710144927536232) internal successors, (561), 206 states have internal predecessors, (561), 136 states have call successors, (139), 3 states have call predecessors, (139), 2 states have return successors, (137), 136 states have call predecessors, (137), 136 states have call successors, (137) Word has length 686 [2022-04-05 05:29:41,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:29:41,587 INFO L225 Difference]: With dead ends: 1184 [2022-04-05 05:29:41,587 INFO L226 Difference]: Without dead ends: 903 [2022-04-05 05:29:41,592 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1845 GetRequests, 1506 SyntacticMatches, 0 SemanticMatches, 339 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32076 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=25607, Invalid=90333, Unknown=0, NotChecked=0, Total=115940 [2022-04-05 05:29:41,592 INFO L913 BasicCegarLoop]: 146 mSDtfsCounter, 1453 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 4223 mSolverCounterSat, 988 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1454 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 5211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 988 IncrementalHoareTripleChecker+Valid, 4223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-04-05 05:29:41,592 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1454 Valid, 193 Invalid, 5211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [988 Valid, 4223 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-04-05 05:29:41,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2022-04-05 05:29:41,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 635. [2022-04-05 05:29:41,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 509 states have (on average 1.0078585461689586) internal successors, (513), 510 states have internal predecessors, (513), 70 states have call successors, (70), 56 states have call predecessors, (70), 55 states have return successors, (69), 68 states have call predecessors, (69), 69 states have call successors, (69) [2022-04-05 05:29:41,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 652 transitions. [2022-04-05 05:29:41,647 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 652 transitions. Word has length 686 [2022-04-05 05:29:41,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:29:41,647 INFO L478 AbstractCegarLoop]: Abstraction has 635 states and 652 transitions. [2022-04-05 05:29:41,647 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 207 states, 207 states have (on average 2.710144927536232) internal successors, (561), 206 states have internal predecessors, (561), 136 states have call successors, (139), 3 states have call predecessors, (139), 2 states have return successors, (137), 136 states have call predecessors, (137), 136 states have call successors, (137) [2022-04-05 05:29:41,647 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 652 transitions. [2022-04-05 05:29:41,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 689 [2022-04-05 05:29:41,650 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:29:41,651 INFO L499 BasicCegarLoop]: trace histogram [68, 68, 68, 68, 67, 67, 67, 67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:29:41,669 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2022-04-05 05:29:41,851 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable81 [2022-04-05 05:29:41,851 INFO L403 AbstractCegarLoop]: === Iteration 83 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:29:41,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:29:41,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1428507974, now seen corresponding path program 80 times [2022-04-05 05:29:41,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:29:41,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862321346] [2022-04-05 05:29:41,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:29:41,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:29:42,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:46,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:29:46,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:46,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-04-05 05:29:46,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:46,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-04-05 05:29:46,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:46,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-04-05 05:29:46,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:46,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-04-05 05:29:46,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:46,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-04-05 05:29:46,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:46,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-04-05 05:29:46,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:46,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-04-05 05:29:46,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:46,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-04-05 05:29:46,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:46,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-04-05 05:29:46,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:46,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-04-05 05:29:46,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:46,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-04-05 05:29:46,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:46,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-04-05 05:29:46,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:46,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-04-05 05:29:46,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:46,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-04-05 05:29:46,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:46,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-04-05 05:29:46,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:46,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-04-05 05:29:46,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:46,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-04-05 05:29:46,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:46,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-04-05 05:29:46,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:46,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-04-05 05:29:46,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:46,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-04-05 05:29:46,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:46,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-04-05 05:29:46,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:46,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-04-05 05:29:46,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:46,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-04-05 05:29:46,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:46,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-04-05 05:29:46,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:46,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-04-05 05:29:46,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:46,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-04-05 05:29:46,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:46,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-04-05 05:29:46,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:46,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-04-05 05:29:46,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:46,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-04-05 05:29:46,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:46,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-04-05 05:29:46,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:46,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-04-05 05:29:46,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:46,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-04-05 05:29:46,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:46,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-04-05 05:29:46,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:46,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-04-05 05:29:46,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:46,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2022-04-05 05:29:46,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:46,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2022-04-05 05:29:46,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:46,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2022-04-05 05:29:46,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:46,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2022-04-05 05:29:46,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:46,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2022-04-05 05:29:46,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:46,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2022-04-05 05:29:46,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:46,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2022-04-05 05:29:46,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:46,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2022-04-05 05:29:46,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:46,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2022-04-05 05:29:46,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:46,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 492 [2022-04-05 05:29:46,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:46,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 500 [2022-04-05 05:29:46,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:46,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2022-04-05 05:29:46,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:46,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2022-04-05 05:29:46,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:46,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 524 [2022-04-05 05:29:46,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:46,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 532 [2022-04-05 05:29:46,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:46,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2022-04-05 05:29:46,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:46,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 548 [2022-04-05 05:29:46,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:46,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 556 [2022-04-05 05:29:46,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:46,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 564 [2022-04-05 05:29:46,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:46,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 572 [2022-04-05 05:29:46,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:46,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 580 [2022-04-05 05:29:46,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:46,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 588 [2022-04-05 05:29:46,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:46,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 596 [2022-04-05 05:29:46,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:46,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 604 [2022-04-05 05:29:46,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:46,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 612 [2022-04-05 05:29:46,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:46,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 620 [2022-04-05 05:29:46,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:46,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 628 [2022-04-05 05:29:46,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:46,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 636 [2022-04-05 05:29:46,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:46,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 644 [2022-04-05 05:29:46,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:46,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 652 [2022-04-05 05:29:46,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:46,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 660 [2022-04-05 05:29:46,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:46,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 668 [2022-04-05 05:29:46,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:46,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2022-04-05 05:29:46,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:46,106 INFO L134 CoverageAnalysis]: Checked inductivity of 22512 backedges. 8914 proven. 4754 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2022-04-05 05:29:46,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:29:46,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862321346] [2022-04-05 05:29:46,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862321346] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:29:46,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816415759] [2022-04-05 05:29:46,106 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 05:29:46,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:29:46,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:29:46,107 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 05:29:46,108 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 05:29:46,290 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 05:29:46,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:29:46,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 1877 conjuncts, 138 conjunts are in the unsatisfiable core [2022-04-05 05:29:46,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:29:51,222 INFO L134 CoverageAnalysis]: Checked inductivity of 22512 backedges. 4690 proven. 8978 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2022-04-05 05:29:51,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:29:52,153 INFO L134 CoverageAnalysis]: Checked inductivity of 22512 backedges. 4690 proven. 8978 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2022-04-05 05:29:52,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816415759] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:29:52,153 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:29:52,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [139, 72, 72] total 209 [2022-04-05 05:29:52,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725980902] [2022-04-05 05:29:52,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:29:52,154 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 209 states [2022-04-05 05:29:52,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:29:52,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 209 interpolants. [2022-04-05 05:29:52,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7182, Invalid=36290, Unknown=0, NotChecked=0, Total=43472 [2022-04-05 05:29:52,157 INFO L87 Difference]: Start difference. First operand 635 states and 652 transitions. Second operand has 209 states, 209 states have (on average 3.3444976076555024) internal successors, (699), 207 states have internal predecessors, (699), 137 states have call successors, (139), 4 states have call predecessors, (139), 1 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2022-04-05 05:30:05,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:30:05,042 INFO L93 Difference]: Finished difference Result 1197 states and 1419 transitions. [2022-04-05 05:30:05,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 276 states. [2022-04-05 05:30:05,042 INFO L78 Accepts]: Start accepts. Automaton has has 209 states, 209 states have (on average 3.3444976076555024) internal successors, (699), 207 states have internal predecessors, (699), 137 states have call successors, (139), 4 states have call predecessors, (139), 1 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) Word has length 688 [2022-04-05 05:30:05,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:30:05,060 INFO L225 Difference]: With dead ends: 1197 [2022-04-05 05:30:05,060 INFO L226 Difference]: Without dead ends: 918 [2022-04-05 05:30:05,095 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1992 GetRequests, 1511 SyntacticMatches, 1 SemanticMatches, 480 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82609 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=38363, Invalid=193479, Unknown=0, NotChecked=0, Total=231842 [2022-04-05 05:30:05,095 INFO L913 BasicCegarLoop]: 213 mSDtfsCounter, 2314 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 9353 mSolverCounterSat, 1987 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2315 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 11340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1987 IncrementalHoareTripleChecker+Valid, 9353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-04-05 05:30:05,095 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2315 Valid, 315 Invalid, 11340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1987 Valid, 9353 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-04-05 05:30:05,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 918 states. [2022-04-05 05:30:05,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 918 to 645. [2022-04-05 05:30:05,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 517 states have (on average 1.0077369439071566) internal successors, (521), 518 states have internal predecessors, (521), 71 states have call successors, (71), 57 states have call predecessors, (71), 56 states have return successors, (70), 69 states have call predecessors, (70), 70 states have call successors, (70) [2022-04-05 05:30:05,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 662 transitions. [2022-04-05 05:30:05,151 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 662 transitions. Word has length 688 [2022-04-05 05:30:05,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:30:05,151 INFO L478 AbstractCegarLoop]: Abstraction has 645 states and 662 transitions. [2022-04-05 05:30:05,152 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 209 states, 209 states have (on average 3.3444976076555024) internal successors, (699), 207 states have internal predecessors, (699), 137 states have call successors, (139), 4 states have call predecessors, (139), 1 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2022-04-05 05:30:05,152 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 662 transitions. [2022-04-05 05:30:05,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 699 [2022-04-05 05:30:05,155 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:30:05,155 INFO L499 BasicCegarLoop]: trace histogram [69, 69, 69, 69, 68, 68, 68, 68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:30:05,173 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Forceful destruction successful, exit code 0 [2022-04-05 05:30:05,355 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:30:05,356 INFO L403 AbstractCegarLoop]: === Iteration 84 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:30:05,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:30:05,356 INFO L85 PathProgramCache]: Analyzing trace with hash 443238705, now seen corresponding path program 81 times [2022-04-05 05:30:05,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:30:05,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997255324] [2022-04-05 05:30:05,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:30:05,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:30:05,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:09,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:30:09,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:09,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-04-05 05:30:09,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:09,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-04-05 05:30:09,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:09,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-04-05 05:30:09,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:09,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-04-05 05:30:09,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:09,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-04-05 05:30:09,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:09,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-04-05 05:30:09,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:09,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-04-05 05:30:09,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:09,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-04-05 05:30:09,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:09,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-04-05 05:30:09,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:09,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-04-05 05:30:09,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:09,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-04-05 05:30:09,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:09,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-04-05 05:30:09,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:09,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-04-05 05:30:09,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:09,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-04-05 05:30:09,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:09,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-04-05 05:30:09,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:09,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-04-05 05:30:09,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:09,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-04-05 05:30:09,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:09,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-04-05 05:30:09,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:09,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-04-05 05:30:09,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:09,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-04-05 05:30:09,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:09,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-04-05 05:30:09,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:09,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-04-05 05:30:09,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:09,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-04-05 05:30:09,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:09,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-04-05 05:30:09,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:09,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-04-05 05:30:09,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:09,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-04-05 05:30:09,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:09,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-04-05 05:30:09,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:09,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-04-05 05:30:09,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:09,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-04-05 05:30:09,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:09,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-04-05 05:30:09,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:09,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-04-05 05:30:09,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:09,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-04-05 05:30:09,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:09,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-04-05 05:30:09,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:09,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-04-05 05:30:09,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:09,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-04-05 05:30:09,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:09,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-04-05 05:30:09,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:09,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-04-05 05:30:09,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:09,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2022-04-05 05:30:09,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:09,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2022-04-05 05:30:09,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:09,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2022-04-05 05:30:09,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:09,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2022-04-05 05:30:09,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:09,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2022-04-05 05:30:09,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:09,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2022-04-05 05:30:09,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:09,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2022-04-05 05:30:09,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:09,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2022-04-05 05:30:09,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:09,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 510 [2022-04-05 05:30:09,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:09,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 518 [2022-04-05 05:30:09,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:09,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2022-04-05 05:30:09,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:09,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 534 [2022-04-05 05:30:09,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:09,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 542 [2022-04-05 05:30:09,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:09,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 550 [2022-04-05 05:30:09,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:09,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 558 [2022-04-05 05:30:09,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:09,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 566 [2022-04-05 05:30:09,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:09,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 574 [2022-04-05 05:30:09,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:09,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 582 [2022-04-05 05:30:09,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:09,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 590 [2022-04-05 05:30:09,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:09,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 598 [2022-04-05 05:30:09,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:09,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 606 [2022-04-05 05:30:09,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:09,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 614 [2022-04-05 05:30:09,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:09,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 622 [2022-04-05 05:30:09,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:09,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 630 [2022-04-05 05:30:09,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:09,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 638 [2022-04-05 05:30:09,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:09,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2022-04-05 05:30:09,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:09,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 654 [2022-04-05 05:30:09,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:09,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 662 [2022-04-05 05:30:09,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:09,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 670 [2022-04-05 05:30:09,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:09,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2022-04-05 05:30:09,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:09,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 686 [2022-04-05 05:30:09,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:09,823 INFO L134 CoverageAnalysis]: Checked inductivity of 23188 backedges. 9183 proven. 4893 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2022-04-05 05:30:09,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:30:09,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997255324] [2022-04-05 05:30:09,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997255324] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:30:09,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349656448] [2022-04-05 05:30:09,823 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-05 05:30:09,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:30:09,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:30:09,824 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 05:30:09,825 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 05:30:10,155 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 69 check-sat command(s) [2022-04-05 05:30:10,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:30:10,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 1904 conjuncts, 140 conjunts are in the unsatisfiable core [2022-04-05 05:30:10,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:30:15,072 INFO L134 CoverageAnalysis]: Checked inductivity of 23188 backedges. 4828 proven. 9248 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2022-04-05 05:30:15,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:30:15,989 INFO L134 CoverageAnalysis]: Checked inductivity of 23188 backedges. 4828 proven. 9248 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2022-04-05 05:30:15,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349656448] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:30:15,990 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:30:15,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [141, 73, 73] total 212 [2022-04-05 05:30:15,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480333316] [2022-04-05 05:30:15,990 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:30:15,991 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 212 states [2022-04-05 05:30:15,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:30:15,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 212 interpolants. [2022-04-05 05:30:15,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7391, Invalid=37341, Unknown=0, NotChecked=0, Total=44732 [2022-04-05 05:30:15,996 INFO L87 Difference]: Start difference. First operand 645 states and 662 transitions. Second operand has 212 states, 212 states have (on average 3.3443396226415096) internal successors, (709), 210 states have internal predecessors, (709), 139 states have call successors, (141), 4 states have call predecessors, (141), 1 states have return successors, (137), 137 states have call predecessors, (137), 137 states have call successors, (137) [2022-04-05 05:30:30,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:30:30,131 INFO L93 Difference]: Finished difference Result 1215 states and 1440 transitions. [2022-04-05 05:30:30,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 280 states. [2022-04-05 05:30:30,131 INFO L78 Accepts]: Start accepts. Automaton has has 212 states, 212 states have (on average 3.3443396226415096) internal successors, (709), 210 states have internal predecessors, (709), 139 states have call successors, (141), 4 states have call predecessors, (141), 1 states have return successors, (137), 137 states have call predecessors, (137), 137 states have call successors, (137) Word has length 698 [2022-04-05 05:30:30,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:30:30,133 INFO L225 Difference]: With dead ends: 1215 [2022-04-05 05:30:30,133 INFO L226 Difference]: Without dead ends: 932 [2022-04-05 05:30:30,144 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 2021 GetRequests, 1533 SyntacticMatches, 1 SemanticMatches, 487 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85066 ImplicationChecksByTransitivity, 16.1s TimeCoverageRelationStatistics Valid=39479, Invalid=199153, Unknown=0, NotChecked=0, Total=238632 [2022-04-05 05:30:30,144 INFO L913 BasicCegarLoop]: 216 mSDtfsCounter, 2197 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 8895 mSolverCounterSat, 1867 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2198 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 10762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1867 IncrementalHoareTripleChecker+Valid, 8895 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-04-05 05:30:30,145 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2198 Valid, 308 Invalid, 10762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1867 Valid, 8895 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-04-05 05:30:30,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2022-04-05 05:30:30,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 655. [2022-04-05 05:30:30,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 525 states have (on average 1.0076190476190476) internal successors, (529), 526 states have internal predecessors, (529), 72 states have call successors, (72), 58 states have call predecessors, (72), 57 states have return successors, (71), 70 states have call predecessors, (71), 71 states have call successors, (71) [2022-04-05 05:30:30,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 672 transitions. [2022-04-05 05:30:30,201 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 672 transitions. Word has length 698 [2022-04-05 05:30:30,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:30:30,202 INFO L478 AbstractCegarLoop]: Abstraction has 655 states and 672 transitions. [2022-04-05 05:30:30,202 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 212 states, 212 states have (on average 3.3443396226415096) internal successors, (709), 210 states have internal predecessors, (709), 139 states have call successors, (141), 4 states have call predecessors, (141), 1 states have return successors, (137), 137 states have call predecessors, (137), 137 states have call successors, (137) [2022-04-05 05:30:30,202 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 672 transitions. [2022-04-05 05:30:30,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 709 [2022-04-05 05:30:30,205 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:30:30,206 INFO L499 BasicCegarLoop]: trace histogram [70, 70, 70, 70, 69, 69, 69, 69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:30:30,232 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 05:30:30,406 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:30:30,406 INFO L403 AbstractCegarLoop]: === Iteration 85 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:30:30,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:30:30,406 INFO L85 PathProgramCache]: Analyzing trace with hash -2018854680, now seen corresponding path program 82 times [2022-04-05 05:30:30,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:30:30,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81725948] [2022-04-05 05:30:30,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:30:30,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:30:30,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:34,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:30:34,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:34,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-04-05 05:30:34,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:34,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-04-05 05:30:34,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:34,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-04-05 05:30:34,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:34,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-04-05 05:30:34,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:34,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-04-05 05:30:34,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:34,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-04-05 05:30:34,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:34,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-04-05 05:30:34,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:34,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-04-05 05:30:34,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:34,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-04-05 05:30:34,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:34,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-04-05 05:30:34,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:34,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-04-05 05:30:34,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:34,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-04-05 05:30:34,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:34,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-04-05 05:30:34,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:34,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-04-05 05:30:34,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:34,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-04-05 05:30:34,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:34,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-04-05 05:30:34,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:34,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-04-05 05:30:34,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:34,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-04-05 05:30:34,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:34,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-04-05 05:30:34,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:34,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-04-05 05:30:34,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:34,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-04-05 05:30:34,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:34,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-04-05 05:30:34,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:34,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-04-05 05:30:34,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:34,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-04-05 05:30:34,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:34,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-04-05 05:30:34,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:34,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-04-05 05:30:34,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:34,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-04-05 05:30:34,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:34,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-04-05 05:30:34,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:34,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-04-05 05:30:34,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:34,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-04-05 05:30:34,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:34,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-04-05 05:30:34,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:34,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-04-05 05:30:34,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:34,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-04-05 05:30:34,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:34,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2022-04-05 05:30:34,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:34,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2022-04-05 05:30:34,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:34,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2022-04-05 05:30:34,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:34,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2022-04-05 05:30:34,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:34,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2022-04-05 05:30:34,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:34,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2022-04-05 05:30:34,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:34,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2022-04-05 05:30:34,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:34,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2022-04-05 05:30:34,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:34,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2022-04-05 05:30:34,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:34,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2022-04-05 05:30:34,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:34,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2022-04-05 05:30:34,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:34,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2022-04-05 05:30:34,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:34,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 512 [2022-04-05 05:30:34,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:34,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 520 [2022-04-05 05:30:34,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:34,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 528 [2022-04-05 05:30:34,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:34,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 536 [2022-04-05 05:30:34,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:34,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 544 [2022-04-05 05:30:34,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:34,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 552 [2022-04-05 05:30:34,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:34,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 560 [2022-04-05 05:30:34,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:34,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2022-04-05 05:30:34,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:34,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 576 [2022-04-05 05:30:34,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:34,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 584 [2022-04-05 05:30:34,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:34,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 592 [2022-04-05 05:30:34,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:34,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 600 [2022-04-05 05:30:34,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:34,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 608 [2022-04-05 05:30:34,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:34,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 616 [2022-04-05 05:30:34,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:34,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 624 [2022-04-05 05:30:34,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:34,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 632 [2022-04-05 05:30:34,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:34,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 640 [2022-04-05 05:30:34,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:34,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 648 [2022-04-05 05:30:34,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:34,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 656 [2022-04-05 05:30:34,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:34,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 664 [2022-04-05 05:30:34,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:34,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 672 [2022-04-05 05:30:34,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:34,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 680 [2022-04-05 05:30:34,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:34,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 688 [2022-04-05 05:30:34,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:34,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 696 [2022-04-05 05:30:34,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:30:34,954 INFO L134 CoverageAnalysis]: Checked inductivity of 23874 backedges. 9456 proven. 5034 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2022-04-05 05:30:34,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:30:34,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81725948] [2022-04-05 05:30:34,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81725948] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:30:34,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459331025] [2022-04-05 05:30:34,954 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-05 05:30:34,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:30:34,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:30:34,955 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 05:30:34,956 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 05:30:35,170 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-05 05:30:35,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:30:35,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 1931 conjuncts, 142 conjunts are in the unsatisfiable core [2022-04-05 05:30:35,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:30:40,142 INFO L134 CoverageAnalysis]: Checked inductivity of 23874 backedges. 4968 proven. 9522 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2022-04-05 05:30:40,143 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:30:41,048 INFO L134 CoverageAnalysis]: Checked inductivity of 23874 backedges. 4968 proven. 9522 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2022-04-05 05:30:41,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459331025] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:30:41,048 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:30:41,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [143, 74, 74] total 215 [2022-04-05 05:30:41,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252771745] [2022-04-05 05:30:41,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:30:41,049 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 215 states [2022-04-05 05:30:41,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:30:41,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 215 interpolants. [2022-04-05 05:30:41,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7603, Invalid=38407, Unknown=0, NotChecked=0, Total=46010 [2022-04-05 05:30:41,053 INFO L87 Difference]: Start difference. First operand 655 states and 672 transitions. Second operand has 215 states, 215 states have (on average 3.344186046511628) internal successors, (719), 213 states have internal predecessors, (719), 141 states have call successors, (143), 4 states have call predecessors, (143), 1 states have return successors, (139), 139 states have call predecessors, (139), 139 states have call successors, (139) [2022-04-05 05:30:55,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:30:55,261 INFO L93 Difference]: Finished difference Result 1233 states and 1461 transitions. [2022-04-05 05:30:55,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 284 states. [2022-04-05 05:30:55,262 INFO L78 Accepts]: Start accepts. Automaton has has 215 states, 215 states have (on average 3.344186046511628) internal successors, (719), 213 states have internal predecessors, (719), 141 states have call successors, (143), 4 states have call predecessors, (143), 1 states have return successors, (139), 139 states have call predecessors, (139), 139 states have call successors, (139) Word has length 708 [2022-04-05 05:30:55,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:30:55,265 INFO L225 Difference]: With dead ends: 1233 [2022-04-05 05:30:55,265 INFO L226 Difference]: Without dead ends: 946 [2022-04-05 05:30:55,282 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 2050 GetRequests, 1555 SyntacticMatches, 1 SemanticMatches, 494 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87559 ImplicationChecksByTransitivity, 16.3s TimeCoverageRelationStatistics Valid=40611, Invalid=204909, Unknown=0, NotChecked=0, Total=245520 [2022-04-05 05:30:55,282 INFO L913 BasicCegarLoop]: 219 mSDtfsCounter, 2132 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 10021 mSolverCounterSat, 1775 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2133 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 11796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1775 IncrementalHoareTripleChecker+Valid, 10021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-04-05 05:30:55,282 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2133 Valid, 321 Invalid, 11796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1775 Valid, 10021 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-04-05 05:30:55,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2022-04-05 05:30:55,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 665. [2022-04-05 05:30:55,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 665 states, 533 states have (on average 1.0075046904315197) internal successors, (537), 534 states have internal predecessors, (537), 73 states have call successors, (73), 59 states have call predecessors, (73), 58 states have return successors, (72), 71 states have call predecessors, (72), 72 states have call successors, (72) [2022-04-05 05:30:55,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 682 transitions. [2022-04-05 05:30:55,346 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 682 transitions. Word has length 708 [2022-04-05 05:30:55,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:30:55,347 INFO L478 AbstractCegarLoop]: Abstraction has 665 states and 682 transitions. [2022-04-05 05:30:55,347 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 215 states, 215 states have (on average 3.344186046511628) internal successors, (719), 213 states have internal predecessors, (719), 141 states have call successors, (143), 4 states have call predecessors, (143), 1 states have return successors, (139), 139 states have call predecessors, (139), 139 states have call successors, (139) [2022-04-05 05:30:55,347 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 682 transitions. [2022-04-05 05:30:55,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 719 [2022-04-05 05:30:55,350 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:30:55,351 INFO L499 BasicCegarLoop]: trace histogram [71, 71, 71, 71, 70, 70, 70, 70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:30:55,377 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2022-04-05 05:30:55,551 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,SelfDestructingSolverStorable84 [2022-04-05 05:30:55,551 INFO L403 AbstractCegarLoop]: === Iteration 86 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:30:55,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:30:55,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1754762785, now seen corresponding path program 83 times [2022-04-05 05:30:55,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:30:55,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720993230] [2022-04-05 05:30:55,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:30:55,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:30:55,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:00,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:31:00,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:00,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-04-05 05:31:00,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:00,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-04-05 05:31:00,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:00,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-04-05 05:31:00,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:00,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-04-05 05:31:00,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:00,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-04-05 05:31:00,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:00,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-04-05 05:31:00,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:00,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-04-05 05:31:00,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:00,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-04-05 05:31:00,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:00,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-04-05 05:31:00,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:00,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-04-05 05:31:00,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:00,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-04-05 05:31:00,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:00,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-04-05 05:31:00,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:00,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-04-05 05:31:00,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:00,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-04-05 05:31:00,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:00,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-04-05 05:31:00,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:00,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-04-05 05:31:00,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:00,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-04-05 05:31:00,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:00,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-04-05 05:31:00,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:00,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-04-05 05:31:00,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:00,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-04-05 05:31:00,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:00,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-04-05 05:31:00,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:00,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-04-05 05:31:00,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:00,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-04-05 05:31:00,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:00,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-04-05 05:31:00,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:00,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-04-05 05:31:00,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:00,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-04-05 05:31:00,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:00,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-04-05 05:31:00,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:00,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-04-05 05:31:00,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:00,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-04-05 05:31:00,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:00,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-04-05 05:31:00,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:00,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-04-05 05:31:00,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:00,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-04-05 05:31:00,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:00,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-04-05 05:31:00,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:00,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-04-05 05:31:00,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:00,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-04-05 05:31:00,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:00,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-04-05 05:31:00,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:00,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2022-04-05 05:31:00,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:00,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2022-04-05 05:31:00,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:00,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2022-04-05 05:31:00,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:00,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2022-04-05 05:31:00,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:00,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2022-04-05 05:31:00,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:00,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2022-04-05 05:31:00,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:00,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2022-04-05 05:31:00,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:00,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2022-04-05 05:31:00,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:00,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2022-04-05 05:31:00,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:00,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2022-04-05 05:31:00,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:00,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 522 [2022-04-05 05:31:00,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:00,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 530 [2022-04-05 05:31:00,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:00,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2022-04-05 05:31:00,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:00,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 546 [2022-04-05 05:31:00,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:00,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2022-04-05 05:31:00,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:00,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 562 [2022-04-05 05:31:00,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:00,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 570 [2022-04-05 05:31:00,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:00,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 578 [2022-04-05 05:31:00,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:00,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 586 [2022-04-05 05:31:00,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:00,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 594 [2022-04-05 05:31:00,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:00,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2022-04-05 05:31:00,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:00,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 610 [2022-04-05 05:31:00,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:00,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 618 [2022-04-05 05:31:00,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:00,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 626 [2022-04-05 05:31:00,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:00,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 634 [2022-04-05 05:31:00,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:00,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 642 [2022-04-05 05:31:00,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:00,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 650 [2022-04-05 05:31:00,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:00,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 658 [2022-04-05 05:31:00,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:00,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 666 [2022-04-05 05:31:00,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:00,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 674 [2022-04-05 05:31:00,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:00,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 682 [2022-04-05 05:31:00,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:00,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 690 [2022-04-05 05:31:00,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:00,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 698 [2022-04-05 05:31:00,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:00,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 706 [2022-04-05 05:31:00,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:00,319 INFO L134 CoverageAnalysis]: Checked inductivity of 24570 backedges. 9733 proven. 5177 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2022-04-05 05:31:00,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:31:00,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720993230] [2022-04-05 05:31:00,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720993230] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:31:00,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184115664] [2022-04-05 05:31:00,320 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-05 05:31:00,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:31:00,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:31:00,321 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 05:31:00,321 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 05:31:00,686 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 71 check-sat command(s) [2022-04-05 05:31:00,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:31:00,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 1958 conjuncts, 144 conjunts are in the unsatisfiable core [2022-04-05 05:31:00,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:31:07,182 INFO L134 CoverageAnalysis]: Checked inductivity of 24570 backedges. 9940 proven. 4970 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2022-04-05 05:31:07,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:31:08,100 INFO L134 CoverageAnalysis]: Checked inductivity of 24570 backedges. 9940 proven. 4970 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2022-04-05 05:31:08,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184115664] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:31:08,100 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:31:08,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [145, 144, 144] total 218 [2022-04-05 05:31:08,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014976347] [2022-04-05 05:31:08,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:31:08,101 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 218 states [2022-04-05 05:31:08,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:31:08,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 218 interpolants. [2022-04-05 05:31:08,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10517, Invalid=36789, Unknown=0, NotChecked=0, Total=47306 [2022-04-05 05:31:08,105 INFO L87 Difference]: Start difference. First operand 665 states and 682 transitions. Second operand has 218 states, 218 states have (on average 2.68348623853211) internal successors, (585), 217 states have internal predecessors, (585), 143 states have call successors, (145), 3 states have call predecessors, (145), 1 states have return successors, (142), 142 states have call predecessors, (142), 142 states have call successors, (142) [2022-04-05 05:31:16,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:31:16,459 INFO L93 Difference]: Finished difference Result 1242 states and 1472 transitions. [2022-04-05 05:31:16,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2022-04-05 05:31:16,460 INFO L78 Accepts]: Start accepts. Automaton has has 218 states, 218 states have (on average 2.68348623853211) internal successors, (585), 217 states have internal predecessors, (585), 143 states have call successors, (145), 3 states have call predecessors, (145), 1 states have return successors, (142), 142 states have call predecessors, (142), 142 states have call successors, (142) Word has length 718 [2022-04-05 05:31:16,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:31:16,462 INFO L225 Difference]: With dead ends: 1242 [2022-04-05 05:31:16,462 INFO L226 Difference]: Without dead ends: 951 [2022-04-05 05:31:16,466 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1934 GetRequests, 1576 SyntacticMatches, 0 SemanticMatches, 358 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35695 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=28624, Invalid=100616, Unknown=0, NotChecked=0, Total=129240 [2022-04-05 05:31:16,467 INFO L913 BasicCegarLoop]: 154 mSDtfsCounter, 1653 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 4809 mSolverCounterSat, 1035 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1654 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 5844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1035 IncrementalHoareTripleChecker+Valid, 4809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-04-05 05:31:16,467 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1654 Valid, 216 Invalid, 5844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1035 Valid, 4809 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-04-05 05:31:16,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 951 states. [2022-04-05 05:31:16,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 951 to 667. [2022-04-05 05:31:16,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 667 states, 535 states have (on average 1.0074766355140188) internal successors, (539), 536 states have internal predecessors, (539), 73 states have call successors, (73), 59 states have call predecessors, (73), 58 states have return successors, (72), 71 states have call predecessors, (72), 72 states have call successors, (72) [2022-04-05 05:31:16,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 684 transitions. [2022-04-05 05:31:16,529 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 684 transitions. Word has length 718 [2022-04-05 05:31:16,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:31:16,529 INFO L478 AbstractCegarLoop]: Abstraction has 667 states and 684 transitions. [2022-04-05 05:31:16,530 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 218 states, 218 states have (on average 2.68348623853211) internal successors, (585), 217 states have internal predecessors, (585), 143 states have call successors, (145), 3 states have call predecessors, (145), 1 states have return successors, (142), 142 states have call predecessors, (142), 142 states have call successors, (142) [2022-04-05 05:31:16,530 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 684 transitions. [2022-04-05 05:31:16,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 721 [2022-04-05 05:31:16,533 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:31:16,534 INFO L499 BasicCegarLoop]: trace histogram [72, 71, 71, 71, 71, 70, 70, 70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:31:16,561 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 05:31:16,734 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:31:16,734 INFO L403 AbstractCegarLoop]: === Iteration 87 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:31:16,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:31:16,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1006155650, now seen corresponding path program 84 times [2022-04-05 05:31:16,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:31:16,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183047960] [2022-04-05 05:31:16,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:31:16,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:31:16,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:18,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:31:18,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:18,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-04-05 05:31:18,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:18,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-04-05 05:31:18,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:18,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-04-05 05:31:18,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:18,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-04-05 05:31:18,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:18,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-04-05 05:31:18,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:18,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-04-05 05:31:18,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:18,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-04-05 05:31:18,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:18,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-04-05 05:31:18,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:18,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-04-05 05:31:18,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:18,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-04-05 05:31:18,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:18,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-04-05 05:31:18,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:18,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-04-05 05:31:18,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:18,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-04-05 05:31:18,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:18,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-04-05 05:31:18,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:18,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-04-05 05:31:18,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:18,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-04-05 05:31:18,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:18,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-04-05 05:31:18,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:18,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-04-05 05:31:18,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:18,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-04-05 05:31:18,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:18,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-04-05 05:31:18,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:18,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-04-05 05:31:18,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:18,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-04-05 05:31:18,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:18,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-04-05 05:31:18,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:18,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-04-05 05:31:18,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:18,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-04-05 05:31:18,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:18,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-04-05 05:31:18,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:18,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-04-05 05:31:18,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:18,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-04-05 05:31:18,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:18,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-04-05 05:31:18,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:18,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-04-05 05:31:18,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:18,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-04-05 05:31:18,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:18,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-04-05 05:31:18,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:18,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-04-05 05:31:18,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:18,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2022-04-05 05:31:18,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:18,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2022-04-05 05:31:18,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:18,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2022-04-05 05:31:18,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:18,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2022-04-05 05:31:18,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:18,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2022-04-05 05:31:18,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:18,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2022-04-05 05:31:18,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:18,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2022-04-05 05:31:18,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:18,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2022-04-05 05:31:18,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:18,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2022-04-05 05:31:18,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:18,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 492 [2022-04-05 05:31:18,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:18,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 500 [2022-04-05 05:31:18,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:18,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2022-04-05 05:31:18,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:18,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2022-04-05 05:31:18,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:18,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 524 [2022-04-05 05:31:18,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:18,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 532 [2022-04-05 05:31:18,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:18,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2022-04-05 05:31:18,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:18,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 548 [2022-04-05 05:31:18,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:18,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 556 [2022-04-05 05:31:18,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:18,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 564 [2022-04-05 05:31:18,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:18,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 572 [2022-04-05 05:31:18,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:18,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 580 [2022-04-05 05:31:18,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:18,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 588 [2022-04-05 05:31:18,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:18,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 596 [2022-04-05 05:31:18,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:18,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 604 [2022-04-05 05:31:18,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:18,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 612 [2022-04-05 05:31:18,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:18,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 620 [2022-04-05 05:31:18,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:18,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 628 [2022-04-05 05:31:18,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:18,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 636 [2022-04-05 05:31:18,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:18,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 644 [2022-04-05 05:31:18,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:18,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 652 [2022-04-05 05:31:18,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:18,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 660 [2022-04-05 05:31:18,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:18,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 668 [2022-04-05 05:31:18,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:18,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2022-04-05 05:31:18,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:18,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 684 [2022-04-05 05:31:18,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:18,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 692 [2022-04-05 05:31:18,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:18,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 700 [2022-04-05 05:31:18,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:18,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 708 [2022-04-05 05:31:18,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:31:18,771 INFO L134 CoverageAnalysis]: Checked inductivity of 24712 backedges. 5110 proven. 9942 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2022-04-05 05:31:18,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:31:18,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183047960] [2022-04-05 05:31:18,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183047960] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:31:18,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587801399] [2022-04-05 05:31:18,772 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-05 05:31:18,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:31:18,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:31:18,773 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 05:31:18,773 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 05:31:19,170 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 72 check-sat command(s) [2022-04-05 05:31:19,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 05:31:19,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 1968 conjuncts, 145 conjunts are in the unsatisfiable core [2022-04-05 05:31:19,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:31:20,074 INFO L134 CoverageAnalysis]: Checked inductivity of 24712 backedges. 5252 proven. 9800 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2022-04-05 05:31:20,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:31:20,970 INFO L134 CoverageAnalysis]: Checked inductivity of 24712 backedges. 5252 proven. 9800 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2022-04-05 05:31:20,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587801399] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:31:20,970 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:31:20,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 76, 76] total 81 [2022-04-05 05:31:20,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189831210] [2022-04-05 05:31:20,971 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:31:20,971 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2022-04-05 05:31:20,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:31:20,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2022-04-05 05:31:20,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2791, Invalid=3689, Unknown=0, NotChecked=0, Total=6480 [2022-04-05 05:31:20,972 INFO L87 Difference]: Start difference. First operand 667 states and 684 transitions. Second operand has 81 states, 81 states have (on average 4.827160493827161) internal successors, (391), 78 states have internal predecessors, (391), 73 states have call successors, (77), 4 states have call predecessors, (77), 1 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72)