/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-b030c9e [2022-03-20 08:21:27,448 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-20 08:21:27,485 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-20 08:21:27,522 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-20 08:21:27,534 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-20 08:21:27,536 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-20 08:21:27,536 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-20 08:21:27,538 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-20 08:21:27,539 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-20 08:21:27,539 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-20 08:21:27,541 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-20 08:21:27,545 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-20 08:21:27,547 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-20 08:21:27,548 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-20 08:21:27,549 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-20 08:21:27,549 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-20 08:21:27,550 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-20 08:21:27,555 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-20 08:21:27,561 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-20 08:21:27,561 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-20 08:21:27,563 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-20 08:21:27,563 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-03-20 08:21:27,585 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-20 08:21:27,585 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-20 08:21:27,587 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-20 08:21:27,587 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-20 08:21:27,588 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-20 08:21:27,588 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-20 08:21:27,588 INFO L138 SettingsManager]: * Use SBE=true [2022-03-20 08:21:27,588 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-20 08:21:27,588 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-20 08:21:27,589 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-20 08:21:27,589 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-20 08:21:27,589 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-20 08:21:27,589 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-20 08:21:27,589 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-20 08:21:27,589 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-20 08:21:27,589 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-20 08:21:27,589 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-20 08:21:27,589 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-20 08:21:27,589 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-20 08:21:27,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 08:21:27,590 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-20 08:21:27,590 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-20 08:21:27,590 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-20 08:21:27,590 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-20 08:21:27,590 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-20 08:21:27,590 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-20 08:21:27,591 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-03-20 08:21:27,591 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-03-20 08:21:27,591 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-20 08:21:27,591 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-20 08:21:27,808 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-20 08:21:27,828 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-20 08:21:27,829 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-20 08:21:27,830 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-20 08:21:27,831 INFO L275 PluginConnector]: CDTParser initialized [2022-03-20 08:21:27,831 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/fragtest_simple.i [2022-03-20 08:21:27,881 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abb531098/002bfe04c8524114acfd3e99bdfcfce9/FLAG3eaf8f754 [2022-03-20 08:21:28,233 INFO L306 CDTParser]: Found 1 translation units. [2022-03-20 08:21:28,234 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/fragtest_simple.i [2022-03-20 08:21:28,245 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abb531098/002bfe04c8524114acfd3e99bdfcfce9/FLAG3eaf8f754 [2022-03-20 08:21:28,259 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abb531098/002bfe04c8524114acfd3e99bdfcfce9 [2022-03-20 08:21:28,261 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-20 08:21:28,262 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-20 08:21:28,264 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-20 08:21:28,264 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-20 08:21:28,267 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-20 08:21:28,268 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 08:21:28" (1/1) ... [2022-03-20 08:21:28,268 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c523433 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:21:28, skipping insertion in model container [2022-03-20 08:21:28,269 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 08:21:28" (1/1) ... [2022-03-20 08:21:28,273 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-20 08:21:28,285 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-20 08:21:28,414 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] [2022-03-20 08:21:28,442 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 08:21:28,448 INFO L203 MainTranslator]: Completed pre-run [2022-03-20 08:21:28,459 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] [2022-03-20 08:21:28,466 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 08:21:28,480 INFO L208 MainTranslator]: Completed translation [2022-03-20 08:21:28,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:21:28 WrapperNode [2022-03-20 08:21:28,481 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-20 08:21:28,482 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-20 08:21:28,483 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-20 08:21:28,483 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-20 08:21:28,491 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:21:28" (1/1) ... [2022-03-20 08:21:28,491 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:21:28" (1/1) ... [2022-03-20 08:21:28,496 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:21:28" (1/1) ... [2022-03-20 08:21:28,496 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:21:28" (1/1) ... [2022-03-20 08:21:28,503 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:21:28" (1/1) ... [2022-03-20 08:21:28,508 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:21:28" (1/1) ... [2022-03-20 08:21:28,513 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:21:28" (1/1) ... [2022-03-20 08:21:28,517 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-20 08:21:28,518 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-20 08:21:28,518 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-20 08:21:28,518 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-20 08:21:28,519 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:21:28" (1/1) ... [2022-03-20 08:21:28,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 08:21:28,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:21:28,541 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) [2022-03-20 08:21:28,559 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 [2022-03-20 08:21:28,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-20 08:21:28,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-20 08:21:28,572 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-20 08:21:28,572 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-20 08:21:28,572 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-20 08:21:28,573 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-20 08:21:28,573 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-20 08:21:28,573 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-20 08:21:28,574 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-03-20 08:21:28,574 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-03-20 08:21:28,574 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-20 08:21:28,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-20 08:21:28,574 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-20 08:21:28,574 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-20 08:21:28,574 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-20 08:21:28,574 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-20 08:21:28,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-20 08:21:28,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-20 08:21:28,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-20 08:21:28,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-20 08:21:28,575 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-20 08:21:28,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-20 08:21:28,637 INFO L234 CfgBuilder]: Building ICFG [2022-03-20 08:21:28,639 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-20 08:21:28,776 INFO L275 CfgBuilder]: Performing block encoding [2022-03-20 08:21:28,780 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-20 08:21:28,780 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-03-20 08:21:28,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 08:21:28 BoogieIcfgContainer [2022-03-20 08:21:28,782 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-20 08:21:28,782 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-20 08:21:28,783 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-20 08:21:28,796 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-20 08:21:28,798 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 08:21:28" (1/1) ... [2022-03-20 08:21:28,800 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_QVASR [2022-03-20 08:21:28,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 08:21:28 BasicIcfg [2022-03-20 08:21:28,823 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-20 08:21:28,824 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-20 08:21:28,824 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-20 08:21:28,826 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-20 08:21:28,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 08:21:28" (1/4) ... [2022-03-20 08:21:28,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@647916f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 08:21:28, skipping insertion in model container [2022-03-20 08:21:28,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:21:28" (2/4) ... [2022-03-20 08:21:28,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@647916f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 08:21:28, skipping insertion in model container [2022-03-20 08:21:28,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 08:21:28" (3/4) ... [2022-03-20 08:21:28,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@647916f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 08:21:28, skipping insertion in model container [2022-03-20 08:21:28,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 08:21:28" (4/4) ... [2022-03-20 08:21:28,828 INFO L111 eAbstractionObserver]: Analyzing ICFG fragtest_simple.iqvasr [2022-03-20 08:21:28,832 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-20 08:21:28,832 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-20 08:21:28,883 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-20 08:21:28,891 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 [2022-03-20 08:21:28,892 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-20 08:21:28,907 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) [2022-03-20 08:21:28,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-20 08:21:28,911 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:21:28,911 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 08:21:28,911 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:21:28,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:21:28,916 INFO L85 PathProgramCache]: Analyzing trace with hash -315946225, now seen corresponding path program 1 times [2022-03-20 08:21:28,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:21:28,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152252176] [2022-03-20 08:21:28,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:21:28,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:21:29,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:29,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:21:29,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:29,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 08:21:29,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:21:29,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152252176] [2022-03-20 08:21:29,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152252176] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 08:21:29,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 08:21:29,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-20 08:21:29,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195629267] [2022-03-20 08:21:29,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 08:21:29,089 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-20 08:21:29,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:21:29,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-20 08:21:29,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-20 08:21:29,120 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) [2022-03-20 08:21:29,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:21:29,151 INFO L93 Difference]: Finished difference Result 48 states and 63 transitions. [2022-03-20 08:21:29,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-20 08:21:29,154 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 [2022-03-20 08:21:29,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:21:29,158 INFO L225 Difference]: With dead ends: 48 [2022-03-20 08:21:29,158 INFO L226 Difference]: Without dead ends: 23 [2022-03-20 08:21:29,160 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 [2022-03-20 08:21:29,162 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 [2022-03-20 08:21:29,163 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] [2022-03-20 08:21:29,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-03-20 08:21:29,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-03-20 08:21:29,187 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) [2022-03-20 08:21:29,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2022-03-20 08:21:29,188 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 16 [2022-03-20 08:21:29,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:21:29,188 INFO L478 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2022-03-20 08:21:29,189 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) [2022-03-20 08:21:29,189 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2022-03-20 08:21:29,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-20 08:21:29,189 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:21:29,189 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 08:21:29,190 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-20 08:21:29,190 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:21:29,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:21:29,193 INFO L85 PathProgramCache]: Analyzing trace with hash -756014827, now seen corresponding path program 1 times [2022-03-20 08:21:29,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:21:29,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692708017] [2022-03-20 08:21:29,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:21:29,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:21:29,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:29,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:21:29,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:29,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 08:21:29,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:21:29,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692708017] [2022-03-20 08:21:29,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692708017] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 08:21:29,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 08:21:29,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 08:21:29,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129179594] [2022-03-20 08:21:29,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 08:21:29,308 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 08:21:29,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:21:29,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 08:21:29,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-20 08:21:29,309 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) [2022-03-20 08:21:29,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:21:29,390 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2022-03-20 08:21:29,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-20 08:21:29,391 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 [2022-03-20 08:21:29,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:21:29,391 INFO L225 Difference]: With dead ends: 32 [2022-03-20 08:21:29,391 INFO L226 Difference]: Without dead ends: 30 [2022-03-20 08:21:29,392 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-03-20 08:21:29,393 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, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 08:21:29,393 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 38 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 08:21:29,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-03-20 08:21:29,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2022-03-20 08:21:29,398 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) [2022-03-20 08:21:29,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2022-03-20 08:21:29,399 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 18 [2022-03-20 08:21:29,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:21:29,399 INFO L478 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2022-03-20 08:21:29,399 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) [2022-03-20 08:21:29,399 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2022-03-20 08:21:29,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-03-20 08:21:29,400 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:21:29,400 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] [2022-03-20 08:21:29,400 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-20 08:21:29,400 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:21:29,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:21:29,401 INFO L85 PathProgramCache]: Analyzing trace with hash -323876183, now seen corresponding path program 1 times [2022-03-20 08:21:29,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:21:29,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904589644] [2022-03-20 08:21:29,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:21:29,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:21:29,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:29,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:21:29,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:29,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-03-20 08:21:29,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:29,465 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 08:21:29,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:21:29,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904589644] [2022-03-20 08:21:29,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904589644] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 08:21:29,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 08:21:29,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 08:21:29,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429475418] [2022-03-20 08:21:29,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 08:21:29,466 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 08:21:29,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:21:29,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 08:21:29,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-20 08:21:29,467 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) [2022-03-20 08:21:29,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:21:29,546 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2022-03-20 08:21:29,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 08:21:29,547 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 [2022-03-20 08:21:29,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:21:29,548 INFO L225 Difference]: With dead ends: 50 [2022-03-20 08:21:29,549 INFO L226 Difference]: Without dead ends: 35 [2022-03-20 08:21:29,549 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 [2022-03-20 08:21:29,550 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, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 08:21:29,550 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 34 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 08:21:29,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-03-20 08:21:29,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2022-03-20 08:21:29,557 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) [2022-03-20 08:21:29,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2022-03-20 08:21:29,558 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 26 [2022-03-20 08:21:29,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:21:29,558 INFO L478 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2022-03-20 08:21:29,559 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) [2022-03-20 08:21:29,559 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2022-03-20 08:21:29,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-03-20 08:21:29,559 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:21:29,559 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] [2022-03-20 08:21:29,560 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-20 08:21:29,560 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:21:29,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:21:29,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1972665292, now seen corresponding path program 1 times [2022-03-20 08:21:29,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:21:29,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752638584] [2022-03-20 08:21:29,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:21:29,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:21:29,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:29,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:21:29,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:29,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 08:21:29,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:29,652 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 08:21:29,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:21:29,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752638584] [2022-03-20 08:21:29,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752638584] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:21:29,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029028037] [2022-03-20 08:21:29,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:21:29,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:21:29,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:21:29,656 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) [2022-03-20 08:21:29,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-20 08:21:29,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:29,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-20 08:21:29,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:21:29,851 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 08:21:29,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:21:29,951 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 08:21:29,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029028037] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:21:29,951 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:21:29,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 14 [2022-03-20 08:21:29,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268076299] [2022-03-20 08:21:29,952 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:21:29,953 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-20 08:21:29,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:21:29,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-20 08:21:29,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-03-20 08:21:29,954 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) [2022-03-20 08:21:30,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:21:30,245 INFO L93 Difference]: Finished difference Result 65 states and 75 transitions. [2022-03-20 08:21:30,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-20 08:21:30,245 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 [2022-03-20 08:21:30,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:21:30,248 INFO L225 Difference]: With dead ends: 65 [2022-03-20 08:21:30,248 INFO L226 Difference]: Without dead ends: 50 [2022-03-20 08:21:30,250 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 [2022-03-20 08:21:30,256 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 [2022-03-20 08:21:30,257 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] [2022-03-20 08:21:30,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-03-20 08:21:30,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 41. [2022-03-20 08:21:30,262 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) [2022-03-20 08:21:30,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2022-03-20 08:21:30,263 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 28 [2022-03-20 08:21:30,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:21:30,263 INFO L478 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2022-03-20 08:21:30,264 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) [2022-03-20 08:21:30,264 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2022-03-20 08:21:30,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-03-20 08:21:30,264 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:21:30,264 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] [2022-03-20 08:21:30,285 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-20 08:21:30,465 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 [2022-03-20 08:21:30,466 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:21:30,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:21:30,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1540710339, now seen corresponding path program 2 times [2022-03-20 08:21:30,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:21:30,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909749845] [2022-03-20 08:21:30,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:21:30,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:21:30,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:30,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:21:30,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:30,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 08:21:30,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:30,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-03-20 08:21:30,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:30,590 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-20 08:21:30,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:21:30,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909749845] [2022-03-20 08:21:30,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909749845] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:21:30,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986283492] [2022-03-20 08:21:30,591 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 08:21:30,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:21:30,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:21:30,592 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) [2022-03-20 08:21:30,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-20 08:21:30,626 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 08:21:30,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 08:21:30,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-20 08:21:30,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:21:30,736 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-20 08:21:30,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:21:30,812 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-20 08:21:30,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986283492] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:21:30,812 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:21:30,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 14 [2022-03-20 08:21:30,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285939857] [2022-03-20 08:21:30,812 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:21:30,813 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-20 08:21:30,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:21:30,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-20 08:21:30,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-03-20 08:21:30,814 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) [2022-03-20 08:21:31,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:21:31,066 INFO L93 Difference]: Finished difference Result 83 states and 96 transitions. [2022-03-20 08:21:31,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-20 08:21:31,067 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 [2022-03-20 08:21:31,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:21:31,068 INFO L225 Difference]: With dead ends: 83 [2022-03-20 08:21:31,068 INFO L226 Difference]: Without dead ends: 64 [2022-03-20 08:21:31,069 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=143, Invalid=559, Unknown=0, NotChecked=0, Total=702 [2022-03-20 08:21:31,069 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 [2022-03-20 08:21:31,070 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] [2022-03-20 08:21:31,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-03-20 08:21:31,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 51. [2022-03-20 08:21:31,075 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) [2022-03-20 08:21:31,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions. [2022-03-20 08:21:31,075 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 54 transitions. Word has length 38 [2022-03-20 08:21:31,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:21:31,076 INFO L478 AbstractCegarLoop]: Abstraction has 51 states and 54 transitions. [2022-03-20 08:21:31,076 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) [2022-03-20 08:21:31,076 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 54 transitions. [2022-03-20 08:21:31,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-03-20 08:21:31,077 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:21:31,077 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] [2022-03-20 08:21:31,093 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-20 08:21:31,285 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 [2022-03-20 08:21:31,285 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:21:31,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:21:31,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1691992838, now seen corresponding path program 3 times [2022-03-20 08:21:31,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:21:31,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640204485] [2022-03-20 08:21:31,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:21:31,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:21:31,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:31,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:21:31,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:31,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-20 08:21:31,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:31,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-20 08:21:31,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:31,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-20 08:21:31,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:31,408 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-03-20 08:21:31,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:21:31,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640204485] [2022-03-20 08:21:31,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640204485] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:21:31,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39016382] [2022-03-20 08:21:31,408 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-20 08:21:31,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:21:31,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:21:31,410 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) [2022-03-20 08:21:31,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-20 08:21:31,462 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-20 08:21:31,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 08:21:31,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-20 08:21:31,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:21:31,585 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-03-20 08:21:31,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:21:31,667 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-03-20 08:21:31,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39016382] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:21:31,667 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:21:31,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 17 [2022-03-20 08:21:31,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12514030] [2022-03-20 08:21:31,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:21:31,668 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-20 08:21:31,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:21:31,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-20 08:21:31,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2022-03-20 08:21:31,668 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) [2022-03-20 08:21:31,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:21:31,986 INFO L93 Difference]: Finished difference Result 101 states and 117 transitions. [2022-03-20 08:21:31,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-20 08:21:31,987 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 [2022-03-20 08:21:31,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:21:31,991 INFO L225 Difference]: With dead ends: 101 [2022-03-20 08:21:31,991 INFO L226 Difference]: Without dead ends: 78 [2022-03-20 08:21:31,992 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 [2022-03-20 08:21:31,993 INFO L913 BasicCegarLoop]: 21 mSDtfsCounter, 104 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2022-03-20 08:21:31,994 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] [2022-03-20 08:21:31,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-03-20 08:21:32,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 61. [2022-03-20 08:21:32,009 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) [2022-03-20 08:21:32,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 64 transitions. [2022-03-20 08:21:32,012 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 64 transitions. Word has length 48 [2022-03-20 08:21:32,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:21:32,012 INFO L478 AbstractCegarLoop]: Abstraction has 61 states and 64 transitions. [2022-03-20 08:21:32,013 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) [2022-03-20 08:21:32,013 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 64 transitions. [2022-03-20 08:21:32,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-03-20 08:21:32,015 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:21:32,016 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] [2022-03-20 08:21:32,032 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-20 08:21:32,231 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 [2022-03-20 08:21:32,232 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:21:32,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:21:32,232 INFO L85 PathProgramCache]: Analyzing trace with hash -445742223, now seen corresponding path program 4 times [2022-03-20 08:21:32,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:21:32,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717448852] [2022-03-20 08:21:32,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:21:32,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:21:32,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:32,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:21:32,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:32,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-20 08:21:32,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:32,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-20 08:21:32,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:32,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-03-20 08:21:32,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:32,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-03-20 08:21:32,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:32,359 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 31 proven. 29 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-20 08:21:32,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:21:32,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717448852] [2022-03-20 08:21:32,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717448852] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:21:32,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732678942] [2022-03-20 08:21:32,360 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-20 08:21:32,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:21:32,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:21:32,361 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) [2022-03-20 08:21:32,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-20 08:21:32,400 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-20 08:21:32,400 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 08:21:32,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-20 08:21:32,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:21:32,557 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 28 proven. 32 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-20 08:21:32,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:21:32,660 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 28 proven. 32 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-20 08:21:32,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732678942] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:21:32,661 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:21:32,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 20 [2022-03-20 08:21:32,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574871234] [2022-03-20 08:21:32,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:21:32,662 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-20 08:21:32,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:21:32,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-20 08:21:32,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2022-03-20 08:21:32,662 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) [2022-03-20 08:21:33,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:21:33,060 INFO L93 Difference]: Finished difference Result 119 states and 138 transitions. [2022-03-20 08:21:33,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-20 08:21:33,061 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 [2022-03-20 08:21:33,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:21:33,062 INFO L225 Difference]: With dead ends: 119 [2022-03-20 08:21:33,062 INFO L226 Difference]: Without dead ends: 92 [2022-03-20 08:21:33,063 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 [2022-03-20 08:21:33,063 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 [2022-03-20 08:21:33,064 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] [2022-03-20 08:21:33,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-03-20 08:21:33,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 71. [2022-03-20 08:21:33,071 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) [2022-03-20 08:21:33,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 74 transitions. [2022-03-20 08:21:33,073 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 74 transitions. Word has length 58 [2022-03-20 08:21:33,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:21:33,074 INFO L478 AbstractCegarLoop]: Abstraction has 71 states and 74 transitions. [2022-03-20 08:21:33,074 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) [2022-03-20 08:21:33,074 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 74 transitions. [2022-03-20 08:21:33,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-03-20 08:21:33,078 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:21:33,078 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] [2022-03-20 08:21:33,098 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-20 08:21:33,291 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 [2022-03-20 08:21:33,291 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:21:33,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:21:33,292 INFO L85 PathProgramCache]: Analyzing trace with hash -2012634328, now seen corresponding path program 5 times [2022-03-20 08:21:33,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:21:33,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946473926] [2022-03-20 08:21:33,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:21:33,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:21:33,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:33,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:21:33,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:33,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-03-20 08:21:33,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:33,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-20 08:21:33,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:33,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-03-20 08:21:33,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:33,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-03-20 08:21:33,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:33,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-03-20 08:21:33,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:33,433 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 48 proven. 42 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-03-20 08:21:33,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:21:33,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946473926] [2022-03-20 08:21:33,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946473926] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:21:33,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956053617] [2022-03-20 08:21:33,433 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-20 08:21:33,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:21:33,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:21:33,434 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) [2022-03-20 08:21:33,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-20 08:21:33,479 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-03-20 08:21:33,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 08:21:33,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-20 08:21:33,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:21:33,684 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 60 proven. 30 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-03-20 08:21:33,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:21:33,791 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 60 proven. 30 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-03-20 08:21:33,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956053617] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:21:33,791 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:21:33,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 23 [2022-03-20 08:21:33,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097834727] [2022-03-20 08:21:33,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:21:33,792 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-20 08:21:33,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:21:33,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-20 08:21:33,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=389, Unknown=0, NotChecked=0, Total=506 [2022-03-20 08:21:33,793 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) [2022-03-20 08:21:34,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:21:34,034 INFO L93 Difference]: Finished difference Result 128 states and 149 transitions. [2022-03-20 08:21:34,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-20 08:21:34,035 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 [2022-03-20 08:21:34,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:21:34,036 INFO L225 Difference]: With dead ends: 128 [2022-03-20 08:21:34,036 INFO L226 Difference]: Without dead ends: 97 [2022-03-20 08:21:34,037 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 [2022-03-20 08:21:34,037 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 [2022-03-20 08:21:34,037 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] [2022-03-20 08:21:34,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-03-20 08:21:34,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 73. [2022-03-20 08:21:34,042 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) [2022-03-20 08:21:34,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 76 transitions. [2022-03-20 08:21:34,043 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 76 transitions. Word has length 68 [2022-03-20 08:21:34,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:21:34,043 INFO L478 AbstractCegarLoop]: Abstraction has 73 states and 76 transitions. [2022-03-20 08:21:34,043 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) [2022-03-20 08:21:34,043 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 76 transitions. [2022-03-20 08:21:34,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-20 08:21:34,044 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:21:34,044 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] [2022-03-20 08:21:34,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-20 08:21:34,259 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 [2022-03-20 08:21:34,260 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:21:34,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:21:34,260 INFO L85 PathProgramCache]: Analyzing trace with hash 272693387, now seen corresponding path program 6 times [2022-03-20 08:21:34,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:21:34,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884815151] [2022-03-20 08:21:34,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:21:34,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:21:34,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:34,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:21:34,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:34,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-03-20 08:21:34,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:34,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-20 08:21:34,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:34,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-20 08:21:34,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:34,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-20 08:21:34,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:34,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-03-20 08:21:34,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:34,374 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 40 proven. 62 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-03-20 08:21:34,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:21:34,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884815151] [2022-03-20 08:21:34,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884815151] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:21:34,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124254711] [2022-03-20 08:21:34,374 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-20 08:21:34,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:21:34,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:21:34,375 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) [2022-03-20 08:21:34,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-20 08:21:34,419 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-03-20 08:21:34,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 08:21:34,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-20 08:21:34,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:21:34,548 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 52 proven. 50 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-03-20 08:21:34,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:21:34,673 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 52 proven. 50 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-03-20 08:21:34,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124254711] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:21:34,673 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:21:34,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 16 [2022-03-20 08:21:34,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293975780] [2022-03-20 08:21:34,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:21:34,674 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-20 08:21:34,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:21:34,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-20 08:21:34,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-03-20 08:21:34,675 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) [2022-03-20 08:21:34,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:21:34,891 INFO L93 Difference]: Finished difference Result 92 states and 97 transitions. [2022-03-20 08:21:34,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-20 08:21:34,891 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 [2022-03-20 08:21:34,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:21:34,892 INFO L225 Difference]: With dead ends: 92 [2022-03-20 08:21:34,892 INFO L226 Difference]: Without dead ends: 90 [2022-03-20 08:21:34,893 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 [2022-03-20 08:21:34,893 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 [2022-03-20 08:21:34,893 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] [2022-03-20 08:21:34,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-03-20 08:21:34,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 85. [2022-03-20 08:21:34,899 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) [2022-03-20 08:21:34,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2022-03-20 08:21:34,899 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 70 [2022-03-20 08:21:34,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:21:34,900 INFO L478 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2022-03-20 08:21:34,900 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) [2022-03-20 08:21:34,900 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2022-03-20 08:21:34,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-03-20 08:21:34,901 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:21:34,901 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] [2022-03-20 08:21:34,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-20 08:21:35,125 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 [2022-03-20 08:21:35,126 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:21:35,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:21:35,126 INFO L85 PathProgramCache]: Analyzing trace with hash 723143603, now seen corresponding path program 7 times [2022-03-20 08:21:35,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:21:35,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165526776] [2022-03-20 08:21:35,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:21:35,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:21:35,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:35,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:21:35,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:35,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-03-20 08:21:35,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:35,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-20 08:21:35,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:35,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-20 08:21:35,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:35,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-20 08:21:35,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:35,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-03-20 08:21:35,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:35,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-03-20 08:21:35,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:35,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-03-20 08:21:35,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:35,271 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 94 proven. 60 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-03-20 08:21:35,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:21:35,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165526776] [2022-03-20 08:21:35,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165526776] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:21:35,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192099522] [2022-03-20 08:21:35,272 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-20 08:21:35,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:21:35,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:21:35,273 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) [2022-03-20 08:21:35,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-20 08:21:35,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:35,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 16 conjunts are in the unsatisfiable core [2022-03-20 08:21:35,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:21:35,542 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 132 proven. 42 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-03-20 08:21:35,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:21:35,662 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 110 proven. 42 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-03-20 08:21:35,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192099522] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:21:35,662 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:21:35,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 16] total 27 [2022-03-20 08:21:35,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038669140] [2022-03-20 08:21:35,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:21:35,663 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-20 08:21:35,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:21:35,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-20 08:21:35,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=544, Unknown=0, NotChecked=0, Total=702 [2022-03-20 08:21:35,664 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) [2022-03-20 08:21:36,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:21:36,019 INFO L93 Difference]: Finished difference Result 156 states and 181 transitions. [2022-03-20 08:21:36,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-20 08:21:36,019 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 [2022-03-20 08:21:36,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:21:36,020 INFO L225 Difference]: With dead ends: 156 [2022-03-20 08:21:36,020 INFO L226 Difference]: Without dead ends: 115 [2022-03-20 08:21:36,021 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 [2022-03-20 08:21:36,022 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 [2022-03-20 08:21:36,022 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] [2022-03-20 08:21:36,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-03-20 08:21:36,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 87. [2022-03-20 08:21:36,027 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) [2022-03-20 08:21:36,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2022-03-20 08:21:36,027 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 86 [2022-03-20 08:21:36,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:21:36,028 INFO L478 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2022-03-20 08:21:36,028 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) [2022-03-20 08:21:36,028 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2022-03-20 08:21:36,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-03-20 08:21:36,028 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:21:36,029 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] [2022-03-20 08:21:36,050 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-20 08:21:36,229 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 [2022-03-20 08:21:36,229 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:21:36,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:21:36,230 INFO L85 PathProgramCache]: Analyzing trace with hash -823513514, now seen corresponding path program 8 times [2022-03-20 08:21:36,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:21:36,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969552155] [2022-03-20 08:21:36,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:21:36,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:21:36,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:36,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:21:36,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:36,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-20 08:21:36,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:36,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-20 08:21:36,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:36,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-03-20 08:21:36,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:36,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-03-20 08:21:36,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:36,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-03-20 08:21:36,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:36,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-03-20 08:21:36,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:36,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-03-20 08:21:36,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:36,398 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 94 proven. 74 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-03-20 08:21:36,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:21:36,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969552155] [2022-03-20 08:21:36,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969552155] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:21:36,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104931887] [2022-03-20 08:21:36,399 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 08:21:36,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:21:36,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:21:36,400 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) [2022-03-20 08:21:36,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-20 08:21:36,455 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 08:21:36,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 08:21:36,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 18 conjunts are in the unsatisfiable core [2022-03-20 08:21:36,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:21:36,688 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 70 proven. 98 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-03-20 08:21:36,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:21:36,828 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 70 proven. 98 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-03-20 08:21:36,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104931887] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:21:36,828 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:21:36,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 12, 12] total 29 [2022-03-20 08:21:36,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226514859] [2022-03-20 08:21:36,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:21:36,829 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-03-20 08:21:36,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:21:36,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-03-20 08:21:36,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=680, Unknown=0, NotChecked=0, Total=812 [2022-03-20 08:21:36,830 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) [2022-03-20 08:21:37,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:21:37,458 INFO L93 Difference]: Finished difference Result 169 states and 198 transitions. [2022-03-20 08:21:37,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-20 08:21:37,459 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 [2022-03-20 08:21:37,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:21:37,460 INFO L225 Difference]: With dead ends: 169 [2022-03-20 08:21:37,460 INFO L226 Difference]: Without dead ends: 130 [2022-03-20 08:21:37,461 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 [2022-03-20 08:21:37,462 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, 0.3s IncrementalHoareTripleChecker+Time [2022-03-20 08:21:37,462 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [201 Valid, 95 Invalid, 935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 778 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-20 08:21:37,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-03-20 08:21:37,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 97. [2022-03-20 08:21:37,467 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) [2022-03-20 08:21:37,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 101 transitions. [2022-03-20 08:21:37,467 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 101 transitions. Word has length 88 [2022-03-20 08:21:37,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:21:37,467 INFO L478 AbstractCegarLoop]: Abstraction has 97 states and 101 transitions. [2022-03-20 08:21:37,468 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) [2022-03-20 08:21:37,468 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 101 transitions. [2022-03-20 08:21:37,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-03-20 08:21:37,468 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:21:37,468 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] [2022-03-20 08:21:37,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-20 08:21:37,679 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 [2022-03-20 08:21:37,679 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:21:37,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:21:37,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1909818931, now seen corresponding path program 9 times [2022-03-20 08:21:37,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:21:37,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308728489] [2022-03-20 08:21:37,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:21:37,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:21:37,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:37,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:21:37,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:37,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-20 08:21:37,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:37,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-03-20 08:21:37,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:37,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-03-20 08:21:37,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:37,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-03-20 08:21:37,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:37,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-03-20 08:21:37,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:37,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-03-20 08:21:37,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:37,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-03-20 08:21:37,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:37,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-03-20 08:21:37,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:37,883 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 123 proven. 93 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-03-20 08:21:37,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:21:37,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308728489] [2022-03-20 08:21:37,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308728489] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:21:37,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631848232] [2022-03-20 08:21:37,883 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-20 08:21:37,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:21:37,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:21:37,885 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) [2022-03-20 08:21:37,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-20 08:21:37,935 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-03-20 08:21:37,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 08:21:37,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-20 08:21:37,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:21:38,278 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 144 proven. 72 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-03-20 08:21:38,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:21:38,458 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 144 proven. 72 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-03-20 08:21:38,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631848232] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:21:38,458 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:21:38,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 32 [2022-03-20 08:21:38,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850706368] [2022-03-20 08:21:38,459 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:21:38,460 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-20 08:21:38,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:21:38,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-20 08:21:38,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=767, Unknown=0, NotChecked=0, Total=992 [2022-03-20 08:21:38,461 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) [2022-03-20 08:21:38,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:21:38,864 INFO L93 Difference]: Finished difference Result 178 states and 209 transitions. [2022-03-20 08:21:38,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-20 08:21:38,864 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 [2022-03-20 08:21:38,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:21:38,865 INFO L225 Difference]: With dead ends: 178 [2022-03-20 08:21:38,865 INFO L226 Difference]: Without dead ends: 135 [2022-03-20 08:21:38,866 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 [2022-03-20 08:21:38,867 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 [2022-03-20 08:21:38,867 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] [2022-03-20 08:21:38,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2022-03-20 08:21:38,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 99. [2022-03-20 08:21:38,871 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) [2022-03-20 08:21:38,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 103 transitions. [2022-03-20 08:21:38,872 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 103 transitions. Word has length 98 [2022-03-20 08:21:38,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:21:38,872 INFO L478 AbstractCegarLoop]: Abstraction has 99 states and 103 transitions. [2022-03-20 08:21:38,872 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) [2022-03-20 08:21:38,872 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 103 transitions. [2022-03-20 08:21:38,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-03-20 08:21:38,873 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:21:38,873 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] [2022-03-20 08:21:38,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-20 08:21:39,078 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 [2022-03-20 08:21:39,079 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:21:39,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:21:39,079 INFO L85 PathProgramCache]: Analyzing trace with hash 2091155440, now seen corresponding path program 10 times [2022-03-20 08:21:39,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:21:39,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284437218] [2022-03-20 08:21:39,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:21:39,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:21:39,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:39,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:21:39,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:39,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-20 08:21:39,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:39,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-03-20 08:21:39,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:39,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-03-20 08:21:39,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:39,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-03-20 08:21:39,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:39,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-03-20 08:21:39,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:39,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-03-20 08:21:39,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:39,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-03-20 08:21:39,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:39,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-03-20 08:21:39,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:39,198 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 88 proven. 146 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-03-20 08:21:39,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:21:39,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284437218] [2022-03-20 08:21:39,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284437218] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:21:39,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391843613] [2022-03-20 08:21:39,198 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-20 08:21:39,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:21:39,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:21:39,199 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) [2022-03-20 08:21:39,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-20 08:21:39,247 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-20 08:21:39,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 08:21:39,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-20 08:21:39,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:21:39,383 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 106 proven. 128 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-03-20 08:21:39,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:21:39,521 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 106 proven. 128 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-03-20 08:21:39,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391843613] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:21:39,521 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:21:39,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 19 [2022-03-20 08:21:39,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630162858] [2022-03-20 08:21:39,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:21:39,522 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-20 08:21:39,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:21:39,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-20 08:21:39,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2022-03-20 08:21:39,522 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) [2022-03-20 08:21:39,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:21:39,765 INFO L93 Difference]: Finished difference Result 118 states and 124 transitions. [2022-03-20 08:21:39,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-20 08:21:39,766 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 [2022-03-20 08:21:39,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:21:39,766 INFO L225 Difference]: With dead ends: 118 [2022-03-20 08:21:39,767 INFO L226 Difference]: Without dead ends: 116 [2022-03-20 08:21:39,767 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 [2022-03-20 08:21:39,768 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, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 08:21:39,768 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 62 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 08:21:39,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-03-20 08:21:39,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 111. [2022-03-20 08:21:39,772 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) [2022-03-20 08:21:39,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 116 transitions. [2022-03-20 08:21:39,773 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 116 transitions. Word has length 100 [2022-03-20 08:21:39,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:21:39,773 INFO L478 AbstractCegarLoop]: Abstraction has 111 states and 116 transitions. [2022-03-20 08:21:39,773 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) [2022-03-20 08:21:39,773 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 116 transitions. [2022-03-20 08:21:39,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-03-20 08:21:39,774 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:21:39,774 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] [2022-03-20 08:21:39,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-20 08:21:39,991 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 [2022-03-20 08:21:39,991 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:21:39,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:21:39,992 INFO L85 PathProgramCache]: Analyzing trace with hash -661362408, now seen corresponding path program 11 times [2022-03-20 08:21:39,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:21:39,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981291171] [2022-03-20 08:21:39,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:21:39,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:21:40,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:40,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:21:40,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:40,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-20 08:21:40,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:40,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-03-20 08:21:40,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:40,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-03-20 08:21:40,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:40,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-03-20 08:21:40,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:40,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-03-20 08:21:40,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:40,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-03-20 08:21:40,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:40,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-03-20 08:21:40,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:40,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-03-20 08:21:40,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:40,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-03-20 08:21:40,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:40,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-03-20 08:21:40,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:40,200 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 193 proven. 117 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-03-20 08:21:40,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:21:40,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981291171] [2022-03-20 08:21:40,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981291171] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:21:40,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721848325] [2022-03-20 08:21:40,200 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-20 08:21:40,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:21:40,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:21:40,202 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) [2022-03-20 08:21:40,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-20 08:21:40,255 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2022-03-20 08:21:40,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 08:21:40,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-20 08:21:40,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:21:40,680 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 220 proven. 90 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-03-20 08:21:40,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:21:40,891 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 220 proven. 90 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-03-20 08:21:40,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721848325] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:21:40,891 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:21:40,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 23] total 39 [2022-03-20 08:21:40,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63266091] [2022-03-20 08:21:40,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:21:40,892 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-03-20 08:21:40,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:21:40,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-03-20 08:21:40,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=342, Invalid=1140, Unknown=0, NotChecked=0, Total=1482 [2022-03-20 08:21:40,893 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) [2022-03-20 08:21:41,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:21:41,573 INFO L93 Difference]: Finished difference Result 253 states and 301 transitions. [2022-03-20 08:21:41,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-20 08:21:41,574 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 [2022-03-20 08:21:41,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:21:41,575 INFO L225 Difference]: With dead ends: 253 [2022-03-20 08:21:41,575 INFO L226 Difference]: Without dead ends: 159 [2022-03-20 08:21:41,577 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 [2022-03-20 08:21:41,577 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, 0.3s IncrementalHoareTripleChecker+Time [2022-03-20 08:21:41,577 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [268 Valid, 64 Invalid, 882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-20 08:21:41,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2022-03-20 08:21:41,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 115. [2022-03-20 08:21:41,582 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) [2022-03-20 08:21:41,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 120 transitions. [2022-03-20 08:21:41,583 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 120 transitions. Word has length 116 [2022-03-20 08:21:41,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:21:41,583 INFO L478 AbstractCegarLoop]: Abstraction has 115 states and 120 transitions. [2022-03-20 08:21:41,583 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) [2022-03-20 08:21:41,584 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 120 transitions. [2022-03-20 08:21:41,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-03-20 08:21:41,584 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:21:41,584 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] [2022-03-20 08:21:41,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-03-20 08:21:41,787 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 [2022-03-20 08:21:41,787 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:21:41,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:21:41,788 INFO L85 PathProgramCache]: Analyzing trace with hash 893969182, now seen corresponding path program 12 times [2022-03-20 08:21:41,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:21:41,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271539908] [2022-03-20 08:21:41,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:21:41,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:21:41,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:41,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:21:41,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:41,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-20 08:21:41,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:41,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-03-20 08:21:41,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:41,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-03-20 08:21:41,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:41,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-03-20 08:21:41,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:41,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-03-20 08:21:41,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:41,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-03-20 08:21:41,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:41,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-03-20 08:21:41,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:41,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-03-20 08:21:41,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:41,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-03-20 08:21:41,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:41,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-03-20 08:21:41,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:41,931 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 130 proven. 222 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-03-20 08:21:41,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:21:41,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271539908] [2022-03-20 08:21:41,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271539908] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:21:41,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110249572] [2022-03-20 08:21:41,931 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-20 08:21:41,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:21:41,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:21:41,933 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) [2022-03-20 08:21:41,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-20 08:21:41,989 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2022-03-20 08:21:41,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 08:21:41,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-20 08:21:41,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:21:42,202 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 152 proven. 200 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-03-20 08:21:42,202 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:21:42,410 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 152 proven. 200 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-03-20 08:21:42,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110249572] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:21:42,410 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:21:42,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 21 [2022-03-20 08:21:42,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035886644] [2022-03-20 08:21:42,411 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:21:42,411 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-20 08:21:42,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:21:42,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-20 08:21:42,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2022-03-20 08:21:42,412 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) [2022-03-20 08:21:42,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:21:42,714 INFO L93 Difference]: Finished difference Result 134 states and 141 transitions. [2022-03-20 08:21:42,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-20 08:21:42,714 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 [2022-03-20 08:21:42,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:21:42,715 INFO L225 Difference]: With dead ends: 134 [2022-03-20 08:21:42,715 INFO L226 Difference]: Without dead ends: 132 [2022-03-20 08:21:42,716 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 [2022-03-20 08:21:42,716 INFO L913 BasicCegarLoop]: 32 mSDtfsCounter, 90 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2022-03-20 08:21:42,716 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] [2022-03-20 08:21:42,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-03-20 08:21:42,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 127. [2022-03-20 08:21:42,723 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) [2022-03-20 08:21:42,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 133 transitions. [2022-03-20 08:21:42,723 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 133 transitions. Word has length 120 [2022-03-20 08:21:42,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:21:42,724 INFO L478 AbstractCegarLoop]: Abstraction has 127 states and 133 transitions. [2022-03-20 08:21:42,724 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) [2022-03-20 08:21:42,724 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 133 transitions. [2022-03-20 08:21:42,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-03-20 08:21:42,725 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:21:42,725 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] [2022-03-20 08:21:42,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-03-20 08:21:42,939 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 [2022-03-20 08:21:42,940 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:21:42,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:21:42,940 INFO L85 PathProgramCache]: Analyzing trace with hash -124211130, now seen corresponding path program 13 times [2022-03-20 08:21:42,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:21:42,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107436474] [2022-03-20 08:21:42,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:21:42,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:21:42,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:43,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:21:43,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:43,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-20 08:21:43,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:43,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-03-20 08:21:43,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:43,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-03-20 08:21:43,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:43,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-03-20 08:21:43,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:43,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-03-20 08:21:43,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:43,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-03-20 08:21:43,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:43,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-03-20 08:21:43,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:43,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-03-20 08:21:43,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:43,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-03-20 08:21:43,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:43,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-03-20 08:21:43,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:43,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-03-20 08:21:43,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:43,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-03-20 08:21:43,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:43,233 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 279 proven. 165 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-03-20 08:21:43,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:21:43,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107436474] [2022-03-20 08:21:43,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107436474] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:21:43,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36804714] [2022-03-20 08:21:43,234 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-20 08:21:43,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:21:43,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:21:43,235 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) [2022-03-20 08:21:43,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-03-20 08:21:43,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:43,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-20 08:21:43,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:21:43,786 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 352 proven. 132 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2022-03-20 08:21:43,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:21:43,978 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 310 proven. 132 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2022-03-20 08:21:43,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36804714] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:21:43,978 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:21:43,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 26, 26] total 42 [2022-03-20 08:21:43,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540420456] [2022-03-20 08:21:43,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:21:43,979 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-03-20 08:21:43,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:21:43,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-03-20 08:21:43,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=383, Invalid=1339, Unknown=0, NotChecked=0, Total=1722 [2022-03-20 08:21:43,980 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) [2022-03-20 08:21:44,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:21:44,515 INFO L93 Difference]: Finished difference Result 238 states and 280 transitions. [2022-03-20 08:21:44,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-03-20 08:21:44,515 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 [2022-03-20 08:21:44,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:21:44,516 INFO L225 Difference]: With dead ends: 238 [2022-03-20 08:21:44,516 INFO L226 Difference]: Without dead ends: 177 [2022-03-20 08:21:44,518 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 [2022-03-20 08:21:44,518 INFO L913 BasicCegarLoop]: 36 mSDtfsCounter, 229 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2022-03-20 08:21:44,518 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] [2022-03-20 08:21:44,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-03-20 08:21:44,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 129. [2022-03-20 08:21:44,524 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) [2022-03-20 08:21:44,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 135 transitions. [2022-03-20 08:21:44,525 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 135 transitions. Word has length 136 [2022-03-20 08:21:44,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:21:44,525 INFO L478 AbstractCegarLoop]: Abstraction has 129 states and 135 transitions. [2022-03-20 08:21:44,525 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) [2022-03-20 08:21:44,525 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 135 transitions. [2022-03-20 08:21:44,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-03-20 08:21:44,526 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:21:44,526 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] [2022-03-20 08:21:44,549 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-03-20 08:21:44,732 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 [2022-03-20 08:21:44,733 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:21:44,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:21:44,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1132461015, now seen corresponding path program 14 times [2022-03-20 08:21:44,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:21:44,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262881421] [2022-03-20 08:21:44,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:21:44,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:21:44,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:44,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:21:44,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:44,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-03-20 08:21:44,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:44,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-03-20 08:21:44,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:44,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-03-20 08:21:44,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:44,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-03-20 08:21:44,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:44,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-03-20 08:21:44,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:44,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-03-20 08:21:44,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:44,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-03-20 08:21:44,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:44,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-03-20 08:21:45,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:45,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-03-20 08:21:45,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:45,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-03-20 08:21:45,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:45,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-03-20 08:21:45,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:45,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-03-20 08:21:45,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:45,016 INFO L134 CoverageAnalysis]: Checked inductivity of 732 backedges. 279 proven. 189 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-03-20 08:21:45,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:21:45,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262881421] [2022-03-20 08:21:45,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262881421] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:21:45,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647808910] [2022-03-20 08:21:45,016 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 08:21:45,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:21:45,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:21:45,017 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) [2022-03-20 08:21:45,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-03-20 08:21:45,072 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 08:21:45,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 08:21:45,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 28 conjunts are in the unsatisfiable core [2022-03-20 08:21:45,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:21:45,465 INFO L134 CoverageAnalysis]: Checked inductivity of 732 backedges. 180 proven. 288 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-03-20 08:21:45,465 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:21:45,665 INFO L134 CoverageAnalysis]: Checked inductivity of 732 backedges. 180 proven. 288 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-03-20 08:21:45,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647808910] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:21:45,666 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:21:45,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 17, 17] total 44 [2022-03-20 08:21:45,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112689332] [2022-03-20 08:21:45,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:21:45,667 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-03-20 08:21:45,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:21:45,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-03-20 08:21:45,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=307, Invalid=1585, Unknown=0, NotChecked=0, Total=1892 [2022-03-20 08:21:45,668 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) [2022-03-20 08:21:46,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:21:46,858 INFO L93 Difference]: Finished difference Result 251 states and 297 transitions. [2022-03-20 08:21:46,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-03-20 08:21:46,859 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 [2022-03-20 08:21:46,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:21:46,860 INFO L225 Difference]: With dead ends: 251 [2022-03-20 08:21:46,860 INFO L226 Difference]: Without dead ends: 192 [2022-03-20 08:21:46,862 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 301 SyntacticMatches, 1 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2914 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1623, Invalid=7689, Unknown=0, NotChecked=0, Total=9312 [2022-03-20 08:21:46,863 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, 0.6s IncrementalHoareTripleChecker+Time [2022-03-20 08:21:46,863 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [350 Valid, 120 Invalid, 1843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [293 Valid, 1550 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-20 08:21:46,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-03-20 08:21:46,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 139. [2022-03-20 08:21:46,871 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) [2022-03-20 08:21:46,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 145 transitions. [2022-03-20 08:21:46,872 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 145 transitions. Word has length 138 [2022-03-20 08:21:46,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:21:46,872 INFO L478 AbstractCegarLoop]: Abstraction has 139 states and 145 transitions. [2022-03-20 08:21:46,872 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) [2022-03-20 08:21:46,872 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 145 transitions. [2022-03-20 08:21:46,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-03-20 08:21:46,873 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:21:46,873 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] [2022-03-20 08:21:46,894 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-03-20 08:21:47,083 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 [2022-03-20 08:21:47,083 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:21:47,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:21:47,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1762808352, now seen corresponding path program 15 times [2022-03-20 08:21:47,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:21:47,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649860471] [2022-03-20 08:21:47,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:21:47,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:21:47,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:47,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:21:47,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:47,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-03-20 08:21:47,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:47,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-03-20 08:21:47,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:47,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-03-20 08:21:47,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:47,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-03-20 08:21:47,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:47,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-03-20 08:21:47,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:47,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-03-20 08:21:47,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:47,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-03-20 08:21:47,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:47,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-03-20 08:21:47,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:47,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-03-20 08:21:47,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:47,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-03-20 08:21:47,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:47,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-03-20 08:21:47,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:47,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-03-20 08:21:47,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:47,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-03-20 08:21:47,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:47,388 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 328 proven. 218 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-03-20 08:21:47,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:21:47,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649860471] [2022-03-20 08:21:47,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649860471] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:21:47,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005906192] [2022-03-20 08:21:47,388 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-20 08:21:47,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:21:47,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:21:47,390 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) [2022-03-20 08:21:47,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-03-20 08:21:47,456 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2022-03-20 08:21:47,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 08:21:47,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-20 08:21:47,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:21:47,928 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 208 proven. 338 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-03-20 08:21:47,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:21:48,177 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 208 proven. 338 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-03-20 08:21:48,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005906192] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:21:48,178 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:21:48,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 18, 18] total 47 [2022-03-20 08:21:48,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308260372] [2022-03-20 08:21:48,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:21:48,178 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-20 08:21:48,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:21:48,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-20 08:21:48,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=1811, Unknown=0, NotChecked=0, Total=2162 [2022-03-20 08:21:48,180 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) [2022-03-20 08:21:49,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:21:49,471 INFO L93 Difference]: Finished difference Result 269 states and 318 transitions. [2022-03-20 08:21:49,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-03-20 08:21:49,472 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 [2022-03-20 08:21:49,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:21:49,473 INFO L225 Difference]: With dead ends: 269 [2022-03-20 08:21:49,473 INFO L226 Difference]: Without dead ends: 206 [2022-03-20 08:21:49,475 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 [2022-03-20 08:21:49,476 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 [2022-03-20 08:21:49,476 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] [2022-03-20 08:21:49,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2022-03-20 08:21:49,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 149. [2022-03-20 08:21:49,490 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) [2022-03-20 08:21:49,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 155 transitions. [2022-03-20 08:21:49,491 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 155 transitions. Word has length 148 [2022-03-20 08:21:49,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:21:49,491 INFO L478 AbstractCegarLoop]: Abstraction has 149 states and 155 transitions. [2022-03-20 08:21:49,492 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) [2022-03-20 08:21:49,492 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 155 transitions. [2022-03-20 08:21:49,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-03-20 08:21:49,492 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:21:49,493 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] [2022-03-20 08:21:49,510 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-03-20 08:21:49,699 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 [2022-03-20 08:21:49,700 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:21:49,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:21:49,700 INFO L85 PathProgramCache]: Analyzing trace with hash -263642921, now seen corresponding path program 16 times [2022-03-20 08:21:49,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:21:49,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339550819] [2022-03-20 08:21:49,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:21:49,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:21:49,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:49,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:21:49,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:49,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-20 08:21:49,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:49,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-20 08:21:49,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:49,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-03-20 08:21:49,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:49,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-03-20 08:21:49,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:49,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-03-20 08:21:50,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:50,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-03-20 08:21:50,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:50,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-03-20 08:21:50,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:50,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-03-20 08:21:50,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:50,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-03-20 08:21:50,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:50,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-03-20 08:21:50,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:50,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-03-20 08:21:50,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:50,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-03-20 08:21:50,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:50,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-03-20 08:21:50,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:50,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-03-20 08:21:50,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:50,017 INFO L134 CoverageAnalysis]: Checked inductivity of 994 backedges. 381 proven. 249 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-03-20 08:21:50,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:21:50,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339550819] [2022-03-20 08:21:50,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339550819] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:21:50,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516443584] [2022-03-20 08:21:50,017 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-20 08:21:50,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:21:50,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:21:50,018 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) [2022-03-20 08:21:50,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-03-20 08:21:50,078 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-20 08:21:50,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 08:21:50,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 32 conjunts are in the unsatisfiable core [2022-03-20 08:21:50,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:21:50,517 INFO L134 CoverageAnalysis]: Checked inductivity of 994 backedges. 238 proven. 392 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-03-20 08:21:50,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:21:50,747 INFO L134 CoverageAnalysis]: Checked inductivity of 994 backedges. 238 proven. 392 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-03-20 08:21:50,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516443584] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:21:50,747 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:21:50,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 19, 19] total 50 [2022-03-20 08:21:50,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144731182] [2022-03-20 08:21:50,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:21:50,748 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-03-20 08:21:50,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:21:50,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-03-20 08:21:50,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=398, Invalid=2052, Unknown=0, NotChecked=0, Total=2450 [2022-03-20 08:21:50,750 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) [2022-03-20 08:21:52,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:21:52,170 INFO L93 Difference]: Finished difference Result 287 states and 339 transitions. [2022-03-20 08:21:52,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-03-20 08:21:52,171 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 [2022-03-20 08:21:52,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:21:52,172 INFO L225 Difference]: With dead ends: 287 [2022-03-20 08:21:52,172 INFO L226 Difference]: Without dead ends: 220 [2022-03-20 08:21:52,174 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 345 SyntacticMatches, 1 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3904 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2111, Invalid=10099, Unknown=0, NotChecked=0, Total=12210 [2022-03-20 08:21:52,174 INFO L913 BasicCegarLoop]: 54 mSDtfsCounter, 451 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1784 mSolverCounterSat, 330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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 [2022-03-20 08:21:52,175 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] [2022-03-20 08:21:52,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2022-03-20 08:21:52,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 159. [2022-03-20 08:21:52,181 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) [2022-03-20 08:21:52,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 165 transitions. [2022-03-20 08:21:52,182 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 165 transitions. Word has length 158 [2022-03-20 08:21:52,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:21:52,182 INFO L478 AbstractCegarLoop]: Abstraction has 159 states and 165 transitions. [2022-03-20 08:21:52,182 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) [2022-03-20 08:21:52,183 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 165 transitions. [2022-03-20 08:21:52,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-03-20 08:21:52,183 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:21:52,184 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] [2022-03-20 08:21:52,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-03-20 08:21:52,399 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 [2022-03-20 08:21:52,399 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:21:52,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:21:52,400 INFO L85 PathProgramCache]: Analyzing trace with hash -243938034, now seen corresponding path program 17 times [2022-03-20 08:21:52,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:21:52,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221115847] [2022-03-20 08:21:52,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:21:52,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:21:52,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:52,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:21:52,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:52,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-03-20 08:21:52,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:52,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-03-20 08:21:52,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:52,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-03-20 08:21:52,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:52,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-03-20 08:21:52,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:52,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-03-20 08:21:52,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:52,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-03-20 08:21:52,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:52,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-03-20 08:21:52,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:52,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-03-20 08:21:52,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:52,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-03-20 08:21:52,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:52,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-03-20 08:21:52,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:52,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-03-20 08:21:52,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:52,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-03-20 08:21:52,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:52,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-03-20 08:21:52,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:52,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-03-20 08:21:52,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:52,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-03-20 08:21:52,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:52,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1140 backedges. 438 proven. 282 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2022-03-20 08:21:52,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:21:52,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221115847] [2022-03-20 08:21:52,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221115847] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:21:52,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506379612] [2022-03-20 08:21:52,753 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-20 08:21:52,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:21:52,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:21:52,754 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) [2022-03-20 08:21:52,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-03-20 08:21:52,827 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2022-03-20 08:21:52,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 08:21:52,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 34 conjunts are in the unsatisfiable core [2022-03-20 08:21:52,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:21:53,480 INFO L134 CoverageAnalysis]: Checked inductivity of 1140 backedges. 480 proven. 240 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2022-03-20 08:21:53,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:21:53,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1140 backedges. 480 proven. 240 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2022-03-20 08:21:53,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506379612] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:21:53,724 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:21:53,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34, 34] total 53 [2022-03-20 08:21:53,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876695895] [2022-03-20 08:21:53,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:21:53,725 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-03-20 08:21:53,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:21:53,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-03-20 08:21:53,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=617, Invalid=2139, Unknown=0, NotChecked=0, Total=2756 [2022-03-20 08:21:53,726 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) [2022-03-20 08:21:54,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:21:54,494 INFO L93 Difference]: Finished difference Result 296 states and 350 transitions. [2022-03-20 08:21:54,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-20 08:21:54,495 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 [2022-03-20 08:21:54,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:21:54,496 INFO L225 Difference]: With dead ends: 296 [2022-03-20 08:21:54,496 INFO L226 Difference]: Without dead ends: 225 [2022-03-20 08:21:54,497 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 [2022-03-20 08:21:54,497 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 [2022-03-20 08:21:54,498 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] [2022-03-20 08:21:54,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2022-03-20 08:21:54,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 161. [2022-03-20 08:21:54,514 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) [2022-03-20 08:21:54,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 167 transitions. [2022-03-20 08:21:54,515 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 167 transitions. Word has length 168 [2022-03-20 08:21:54,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:21:54,515 INFO L478 AbstractCegarLoop]: Abstraction has 161 states and 167 transitions. [2022-03-20 08:21:54,515 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) [2022-03-20 08:21:54,515 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 167 transitions. [2022-03-20 08:21:54,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-03-20 08:21:54,517 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:21:54,518 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] [2022-03-20 08:21:54,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-03-20 08:21:54,731 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 [2022-03-20 08:21:54,731 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:21:54,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:21:54,732 INFO L85 PathProgramCache]: Analyzing trace with hash -509815567, now seen corresponding path program 18 times [2022-03-20 08:21:54,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:21:54,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89743768] [2022-03-20 08:21:54,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:21:54,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:21:54,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:54,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:21:54,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:54,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-03-20 08:21:54,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:54,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-03-20 08:21:54,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:54,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-03-20 08:21:54,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:54,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-03-20 08:21:54,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:54,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-03-20 08:21:54,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:54,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-03-20 08:21:54,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:54,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-03-20 08:21:54,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:54,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-03-20 08:21:54,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:54,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-03-20 08:21:54,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:54,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-03-20 08:21:54,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:54,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-03-20 08:21:54,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:54,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-03-20 08:21:54,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:54,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-03-20 08:21:54,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:54,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-03-20 08:21:54,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:54,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-03-20 08:21:54,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:54,948 INFO L134 CoverageAnalysis]: Checked inductivity of 1172 backedges. 270 proven. 482 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2022-03-20 08:21:54,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:21:54,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89743768] [2022-03-20 08:21:54,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89743768] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:21:54,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410657666] [2022-03-20 08:21:54,948 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-20 08:21:54,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:21:54,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:21:54,949 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) [2022-03-20 08:21:54,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-03-20 08:21:55,024 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2022-03-20 08:21:55,024 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 08:21:55,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 35 conjunts are in the unsatisfiable core [2022-03-20 08:21:55,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:21:55,246 INFO L134 CoverageAnalysis]: Checked inductivity of 1172 backedges. 302 proven. 450 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2022-03-20 08:21:55,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:21:55,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1172 backedges. 302 proven. 450 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2022-03-20 08:21:55,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410657666] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:21:55,478 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:21:55,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 21] total 26 [2022-03-20 08:21:55,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644348743] [2022-03-20 08:21:55,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:21:55,478 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-20 08:21:55,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:21:55,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-20 08:21:55,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=444, Unknown=0, NotChecked=0, Total=650 [2022-03-20 08:21:55,479 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) [2022-03-20 08:21:55,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:21:55,895 INFO L93 Difference]: Finished difference Result 180 states and 188 transitions. [2022-03-20 08:21:55,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-20 08:21:55,896 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 [2022-03-20 08:21:55,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:21:55,897 INFO L225 Difference]: With dead ends: 180 [2022-03-20 08:21:55,897 INFO L226 Difference]: Without dead ends: 178 [2022-03-20 08:21:55,898 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 [2022-03-20 08:21:55,898 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, 0.3s IncrementalHoareTripleChecker+Time [2022-03-20 08:21:55,898 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 64 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-20 08:21:55,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2022-03-20 08:21:55,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 173. [2022-03-20 08:21:55,906 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) [2022-03-20 08:21:55,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 180 transitions. [2022-03-20 08:21:55,906 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 180 transitions. Word has length 170 [2022-03-20 08:21:55,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:21:55,907 INFO L478 AbstractCegarLoop]: Abstraction has 173 states and 180 transitions. [2022-03-20 08:21:55,907 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) [2022-03-20 08:21:55,907 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 180 transitions. [2022-03-20 08:21:55,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-03-20 08:21:55,907 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:21:55,908 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] [2022-03-20 08:21:55,926 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-03-20 08:21:56,124 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 [2022-03-20 08:21:56,125 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:21:56,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:21:56,125 INFO L85 PathProgramCache]: Analyzing trace with hash 82615321, now seen corresponding path program 19 times [2022-03-20 08:21:56,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:21:56,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799536114] [2022-03-20 08:21:56,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:21:56,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:21:56,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:56,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:21:56,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:56,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-03-20 08:21:56,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:56,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-03-20 08:21:56,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:56,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-03-20 08:21:56,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:56,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-03-20 08:21:56,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:56,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-03-20 08:21:56,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:56,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-03-20 08:21:56,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:56,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-03-20 08:21:56,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:56,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-03-20 08:21:56,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:56,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-03-20 08:21:56,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:56,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-03-20 08:21:56,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:56,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-03-20 08:21:56,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:56,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-03-20 08:21:56,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:56,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-03-20 08:21:56,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:56,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-03-20 08:21:56,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:56,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-03-20 08:21:56,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:56,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-03-20 08:21:56,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:56,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-03-20 08:21:56,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:56,611 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 564 proven. 320 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2022-03-20 08:21:56,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:21:56,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799536114] [2022-03-20 08:21:56,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799536114] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:21:56,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435352542] [2022-03-20 08:21:56,611 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-20 08:21:56,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:21:56,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:21:56,612 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) [2022-03-20 08:21:56,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-03-20 08:21:56,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:56,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 36 conjunts are in the unsatisfiable core [2022-03-20 08:21:56,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:21:57,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 672 proven. 272 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2022-03-20 08:21:57,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:21:57,629 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 610 proven. 272 refuted. 0 times theorem prover too weak. 546 trivial. 0 not checked. [2022-03-20 08:21:57,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435352542] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:21:57,629 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:21:57,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 36, 36] total 57 [2022-03-20 08:21:57,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837480110] [2022-03-20 08:21:57,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:21:57,630 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-03-20 08:21:57,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:21:57,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-03-20 08:21:57,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=708, Invalid=2484, Unknown=0, NotChecked=0, Total=3192 [2022-03-20 08:21:57,631 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) [2022-03-20 08:21:58,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:21:58,486 INFO L93 Difference]: Finished difference Result 324 states and 382 transitions. [2022-03-20 08:21:58,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-20 08:21:58,488 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 [2022-03-20 08:21:58,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:21:58,489 INFO L225 Difference]: With dead ends: 324 [2022-03-20 08:21:58,489 INFO L226 Difference]: Without dead ends: 243 [2022-03-20 08:21:58,491 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 406 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2176 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1832, Invalid=6358, Unknown=0, NotChecked=0, Total=8190 [2022-03-20 08:21:58,491 INFO L913 BasicCegarLoop]: 46 mSDtfsCounter, 298 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1062 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.4s IncrementalHoareTripleChecker+Time [2022-03-20 08:21:58,491 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [299 Valid, 108 Invalid, 1258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 1062 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-20 08:21:58,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-03-20 08:21:58,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 175. [2022-03-20 08:21:58,499 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) [2022-03-20 08:21:58,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 182 transitions. [2022-03-20 08:21:58,500 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 182 transitions. Word has length 186 [2022-03-20 08:21:58,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:21:58,500 INFO L478 AbstractCegarLoop]: Abstraction has 175 states and 182 transitions. [2022-03-20 08:21:58,500 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) [2022-03-20 08:21:58,500 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 182 transitions. [2022-03-20 08:21:58,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-03-20 08:21:58,501 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:21:58,501 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] [2022-03-20 08:21:58,522 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-03-20 08:21:58,711 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 [2022-03-20 08:21:58,711 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:21:58,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:21:58,712 INFO L85 PathProgramCache]: Analyzing trace with hash -535523012, now seen corresponding path program 20 times [2022-03-20 08:21:58,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:21:58,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131021102] [2022-03-20 08:21:58,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:21:58,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:21:58,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:59,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:21:59,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:59,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-03-20 08:21:59,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:59,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-03-20 08:21:59,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:59,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-03-20 08:21:59,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:59,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-03-20 08:21:59,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:59,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-03-20 08:21:59,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:59,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-03-20 08:21:59,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:59,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-03-20 08:21:59,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:59,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-03-20 08:21:59,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:59,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-03-20 08:21:59,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:59,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-03-20 08:21:59,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:59,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-03-20 08:21:59,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:59,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-03-20 08:21:59,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:59,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-03-20 08:21:59,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:59,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-03-20 08:21:59,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:59,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-03-20 08:21:59,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:59,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-03-20 08:21:59,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:59,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-03-20 08:21:59,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:21:59,154 INFO L134 CoverageAnalysis]: Checked inductivity of 1462 backedges. 564 proven. 354 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2022-03-20 08:21:59,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:21:59,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131021102] [2022-03-20 08:21:59,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131021102] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:21:59,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093957434] [2022-03-20 08:21:59,154 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 08:21:59,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:21:59,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:21:59,155 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) [2022-03-20 08:21:59,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-03-20 08:21:59,223 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 08:21:59,223 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 08:21:59,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 38 conjunts are in the unsatisfiable core [2022-03-20 08:21:59,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:21:59,815 INFO L134 CoverageAnalysis]: Checked inductivity of 1462 backedges. 340 proven. 578 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2022-03-20 08:21:59,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:22:00,080 INFO L134 CoverageAnalysis]: Checked inductivity of 1462 backedges. 340 proven. 578 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2022-03-20 08:22:00,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1093957434] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:22:00,081 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:22:00,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 22, 22] total 59 [2022-03-20 08:22:00,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827009050] [2022-03-20 08:22:00,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:22:00,081 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-03-20 08:22:00,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:22:00,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-03-20 08:22:00,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=557, Invalid=2865, Unknown=0, NotChecked=0, Total=3422 [2022-03-20 08:22:00,082 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) [2022-03-20 08:22:01,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:22:01,812 INFO L93 Difference]: Finished difference Result 337 states and 399 transitions. [2022-03-20 08:22:01,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-03-20 08:22:01,813 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 [2022-03-20 08:22:01,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:22:01,814 INFO L225 Difference]: With dead ends: 337 [2022-03-20 08:22:01,814 INFO L226 Difference]: Without dead ends: 258 [2022-03-20 08:22:01,816 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 [2022-03-20 08:22:01,817 INFO L913 BasicCegarLoop]: 63 mSDtfsCounter, 514 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2231 mSolverCounterSat, 403 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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 [2022-03-20 08:22:01,817 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] [2022-03-20 08:22:01,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2022-03-20 08:22:01,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 185. [2022-03-20 08:22:01,831 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) [2022-03-20 08:22:01,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 192 transitions. [2022-03-20 08:22:01,833 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 192 transitions. Word has length 188 [2022-03-20 08:22:01,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:22:01,833 INFO L478 AbstractCegarLoop]: Abstraction has 185 states and 192 transitions. [2022-03-20 08:22:01,833 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) [2022-03-20 08:22:01,833 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 192 transitions. [2022-03-20 08:22:01,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-03-20 08:22:01,834 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:22:01,834 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] [2022-03-20 08:22:01,857 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-03-20 08:22:02,051 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 [2022-03-20 08:22:02,051 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:22:02,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:22:02,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1382971085, now seen corresponding path program 21 times [2022-03-20 08:22:02,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:22:02,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979211951] [2022-03-20 08:22:02,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:22:02,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:22:02,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:02,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:22:02,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:02,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-20 08:22:02,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:02,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-03-20 08:22:02,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:02,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-03-20 08:22:02,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:02,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-03-20 08:22:02,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:02,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-03-20 08:22:02,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:02,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-03-20 08:22:02,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:02,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-03-20 08:22:02,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:02,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-03-20 08:22:02,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:02,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-03-20 08:22:02,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:02,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-03-20 08:22:02,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:02,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-03-20 08:22:02,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:02,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-03-20 08:22:02,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:02,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-03-20 08:22:02,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:02,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-03-20 08:22:02,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:02,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-03-20 08:22:02,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:02,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-03-20 08:22:02,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:02,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-03-20 08:22:02,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:02,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-03-20 08:22:02,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:02,511 INFO L134 CoverageAnalysis]: Checked inductivity of 1638 backedges. 633 proven. 393 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2022-03-20 08:22:02,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:22:02,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979211951] [2022-03-20 08:22:02,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979211951] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:22:02,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701460372] [2022-03-20 08:22:02,512 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-20 08:22:02,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:22:02,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:22:02,513 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) [2022-03-20 08:22:02,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-03-20 08:22:02,608 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2022-03-20 08:22:02,608 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 08:22:02,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 40 conjunts are in the unsatisfiable core [2022-03-20 08:22:02,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:22:03,195 INFO L134 CoverageAnalysis]: Checked inductivity of 1638 backedges. 378 proven. 648 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2022-03-20 08:22:03,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:22:03,471 INFO L134 CoverageAnalysis]: Checked inductivity of 1638 backedges. 378 proven. 648 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2022-03-20 08:22:03,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701460372] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:22:03,472 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:22:03,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 23, 23] total 62 [2022-03-20 08:22:03,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009314085] [2022-03-20 08:22:03,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:22:03,472 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-03-20 08:22:03,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:22:03,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-03-20 08:22:03,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=616, Invalid=3166, Unknown=0, NotChecked=0, Total=3782 [2022-03-20 08:22:03,474 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) [2022-03-20 08:22:05,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:22:05,442 INFO L93 Difference]: Finished difference Result 355 states and 420 transitions. [2022-03-20 08:22:05,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-03-20 08:22:05,443 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 [2022-03-20 08:22:05,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:22:05,444 INFO L225 Difference]: With dead ends: 355 [2022-03-20 08:22:05,444 INFO L226 Difference]: Without dead ends: 272 [2022-03-20 08:22:05,446 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 [2022-03-20 08:22:05,447 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 [2022-03-20 08:22:05,447 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] [2022-03-20 08:22:05,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2022-03-20 08:22:05,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 195. [2022-03-20 08:22:05,461 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) [2022-03-20 08:22:05,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 202 transitions. [2022-03-20 08:22:05,462 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 202 transitions. Word has length 198 [2022-03-20 08:22:05,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:22:05,462 INFO L478 AbstractCegarLoop]: Abstraction has 195 states and 202 transitions. [2022-03-20 08:22:05,462 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) [2022-03-20 08:22:05,462 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 202 transitions. [2022-03-20 08:22:05,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-03-20 08:22:05,464 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:22:05,464 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] [2022-03-20 08:22:05,484 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-03-20 08:22:05,679 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 [2022-03-20 08:22:05,679 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:22:05,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:22:05,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1594525078, now seen corresponding path program 22 times [2022-03-20 08:22:05,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:22:05,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631757654] [2022-03-20 08:22:05,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:22:05,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:22:05,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:06,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:22:06,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:06,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-03-20 08:22:06,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:06,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-03-20 08:22:06,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:06,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-03-20 08:22:06,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:06,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-03-20 08:22:06,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:06,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-03-20 08:22:06,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:06,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-03-20 08:22:06,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:06,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-03-20 08:22:06,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:06,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-03-20 08:22:06,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:06,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-03-20 08:22:06,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:06,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-03-20 08:22:06,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:06,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-03-20 08:22:06,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:06,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-03-20 08:22:06,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:06,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-03-20 08:22:06,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:06,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-03-20 08:22:06,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:06,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-03-20 08:22:06,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:06,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-03-20 08:22:06,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:06,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-03-20 08:22:06,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:06,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-03-20 08:22:06,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:06,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-03-20 08:22:06,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:06,207 INFO L134 CoverageAnalysis]: Checked inductivity of 1824 backedges. 706 proven. 434 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2022-03-20 08:22:06,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:22:06,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631757654] [2022-03-20 08:22:06,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631757654] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:22:06,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412915604] [2022-03-20 08:22:06,207 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-20 08:22:06,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:22:06,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:22:06,209 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) [2022-03-20 08:22:06,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-03-20 08:22:06,282 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-20 08:22:06,283 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 08:22:06,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 42 conjunts are in the unsatisfiable core [2022-03-20 08:22:06,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:22:06,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1824 backedges. 418 proven. 722 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2022-03-20 08:22:06,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:22:07,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1824 backedges. 418 proven. 722 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2022-03-20 08:22:07,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412915604] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:22:07,205 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:22:07,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 24, 24] total 65 [2022-03-20 08:22:07,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337214782] [2022-03-20 08:22:07,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:22:07,206 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-03-20 08:22:07,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:22:07,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-03-20 08:22:07,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=678, Invalid=3482, Unknown=0, NotChecked=0, Total=4160 [2022-03-20 08:22:07,207 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) [2022-03-20 08:22:09,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:22:09,183 INFO L93 Difference]: Finished difference Result 373 states and 441 transitions. [2022-03-20 08:22:09,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-03-20 08:22:09,184 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 [2022-03-20 08:22:09,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:22:09,186 INFO L225 Difference]: With dead ends: 373 [2022-03-20 08:22:09,186 INFO L226 Difference]: Without dead ends: 286 [2022-03-20 08:22:09,188 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 600 GetRequests, 455 SyntacticMatches, 1 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7009 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=3611, Invalid=17559, Unknown=0, NotChecked=0, Total=21170 [2022-03-20 08:22:09,189 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 [2022-03-20 08:22:09,189 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] [2022-03-20 08:22:09,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2022-03-20 08:22:09,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 205. [2022-03-20 08:22:09,213 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) [2022-03-20 08:22:09,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 212 transitions. [2022-03-20 08:22:09,213 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 212 transitions. Word has length 208 [2022-03-20 08:22:09,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:22:09,214 INFO L478 AbstractCegarLoop]: Abstraction has 205 states and 212 transitions. [2022-03-20 08:22:09,214 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) [2022-03-20 08:22:09,214 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 212 transitions. [2022-03-20 08:22:09,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2022-03-20 08:22:09,215 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:22:09,215 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] [2022-03-20 08:22:09,234 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-03-20 08:22:09,419 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 [2022-03-20 08:22:09,419 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:22:09,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:22:09,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1419258655, now seen corresponding path program 23 times [2022-03-20 08:22:09,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:22:09,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131759609] [2022-03-20 08:22:09,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:22:09,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:22:09,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:09,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:22:09,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:09,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-03-20 08:22:09,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:09,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-03-20 08:22:09,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:09,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-03-20 08:22:09,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:09,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-03-20 08:22:09,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:09,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-03-20 08:22:09,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:09,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-03-20 08:22:09,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:09,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-03-20 08:22:09,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:09,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-03-20 08:22:09,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:09,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-03-20 08:22:09,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:09,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-03-20 08:22:09,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:09,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-03-20 08:22:09,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:09,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-03-20 08:22:09,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:09,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-03-20 08:22:09,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:09,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-03-20 08:22:09,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:09,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-03-20 08:22:09,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:09,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-03-20 08:22:09,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:09,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-03-20 08:22:09,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:09,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-03-20 08:22:09,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:09,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-03-20 08:22:09,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:09,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-03-20 08:22:09,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:09,995 INFO L134 CoverageAnalysis]: Checked inductivity of 2020 backedges. 783 proven. 477 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-03-20 08:22:09,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:22:09,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131759609] [2022-03-20 08:22:09,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131759609] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:22:09,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174060439] [2022-03-20 08:22:09,996 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-20 08:22:09,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:22:09,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:22:09,997 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) [2022-03-20 08:22:09,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-03-20 08:22:10,091 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2022-03-20 08:22:10,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 08:22:10,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 44 conjunts are in the unsatisfiable core [2022-03-20 08:22:10,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:22:11,035 INFO L134 CoverageAnalysis]: Checked inductivity of 2020 backedges. 840 proven. 420 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-03-20 08:22:11,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:22:11,330 INFO L134 CoverageAnalysis]: Checked inductivity of 2020 backedges. 840 proven. 420 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-03-20 08:22:11,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174060439] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:22:11,330 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:22:11,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 44, 44] total 68 [2022-03-20 08:22:11,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279980909] [2022-03-20 08:22:11,330 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:22:11,331 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-03-20 08:22:11,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:22:11,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-03-20 08:22:11,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1017, Invalid=3539, Unknown=0, NotChecked=0, Total=4556 [2022-03-20 08:22:11,332 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) [2022-03-20 08:22:12,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:22:12,424 INFO L93 Difference]: Finished difference Result 382 states and 452 transitions. [2022-03-20 08:22:12,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-20 08:22:12,425 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 [2022-03-20 08:22:12,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:22:12,426 INFO L225 Difference]: With dead ends: 382 [2022-03-20 08:22:12,426 INFO L226 Difference]: Without dead ends: 291 [2022-03-20 08:22:12,427 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 [2022-03-20 08:22:12,428 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 [2022-03-20 08:22:12,428 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] [2022-03-20 08:22:12,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2022-03-20 08:22:12,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 207. [2022-03-20 08:22:12,437 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) [2022-03-20 08:22:12,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 214 transitions. [2022-03-20 08:22:12,438 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 214 transitions. Word has length 218 [2022-03-20 08:22:12,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:22:12,438 INFO L478 AbstractCegarLoop]: Abstraction has 207 states and 214 transitions. [2022-03-20 08:22:12,438 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) [2022-03-20 08:22:12,438 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 214 transitions. [2022-03-20 08:22:12,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2022-03-20 08:22:12,439 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:22:12,439 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] [2022-03-20 08:22:12,457 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-03-20 08:22:12,652 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 [2022-03-20 08:22:12,652 INFO L403 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:22:12,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:22:12,652 INFO L85 PathProgramCache]: Analyzing trace with hash -705004028, now seen corresponding path program 24 times [2022-03-20 08:22:12,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:22:12,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057275724] [2022-03-20 08:22:12,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:22:12,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:22:12,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:12,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:22:12,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:12,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-03-20 08:22:12,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:12,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-03-20 08:22:12,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:12,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-03-20 08:22:12,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:12,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-03-20 08:22:12,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:12,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-03-20 08:22:12,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:12,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-03-20 08:22:12,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:12,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-03-20 08:22:12,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:12,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-03-20 08:22:12,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:12,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-03-20 08:22:12,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:12,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-03-20 08:22:12,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:12,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-03-20 08:22:12,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:12,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-03-20 08:22:12,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:12,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-03-20 08:22:12,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:12,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-03-20 08:22:12,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:12,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-03-20 08:22:12,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:12,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-03-20 08:22:12,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:12,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-03-20 08:22:12,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:12,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-03-20 08:22:12,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:12,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-03-20 08:22:12,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:12,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-03-20 08:22:12,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:12,956 INFO L134 CoverageAnalysis]: Checked inductivity of 2062 backedges. 460 proven. 842 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-03-20 08:22:12,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:22:12,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057275724] [2022-03-20 08:22:12,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057275724] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:22:12,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278895726] [2022-03-20 08:22:12,957 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-20 08:22:12,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:22:12,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:22:12,958 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) [2022-03-20 08:22:12,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-03-20 08:22:13,053 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2022-03-20 08:22:13,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 08:22:13,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 618 conjuncts, 45 conjunts are in the unsatisfiable core [2022-03-20 08:22:13,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:22:13,364 INFO L134 CoverageAnalysis]: Checked inductivity of 2062 backedges. 502 proven. 800 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-03-20 08:22:13,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:22:13,674 INFO L134 CoverageAnalysis]: Checked inductivity of 2062 backedges. 502 proven. 800 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-03-20 08:22:13,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [278895726] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:22:13,675 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:22:13,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26, 26] total 31 [2022-03-20 08:22:13,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448563617] [2022-03-20 08:22:13,675 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:22:13,675 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-20 08:22:13,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:22:13,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-20 08:22:13,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=316, Invalid=614, Unknown=0, NotChecked=0, Total=930 [2022-03-20 08:22:13,676 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) [2022-03-20 08:22:14,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:22:14,180 INFO L93 Difference]: Finished difference Result 226 states and 235 transitions. [2022-03-20 08:22:14,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-20 08:22:14,180 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 [2022-03-20 08:22:14,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:22:14,181 INFO L225 Difference]: With dead ends: 226 [2022-03-20 08:22:14,181 INFO L226 Difference]: Without dead ends: 224 [2022-03-20 08:22:14,182 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 [2022-03-20 08:22:14,182 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 [2022-03-20 08:22:14,182 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] [2022-03-20 08:22:14,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2022-03-20 08:22:14,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 219. [2022-03-20 08:22:14,192 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) [2022-03-20 08:22:14,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 227 transitions. [2022-03-20 08:22:14,193 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 227 transitions. Word has length 220 [2022-03-20 08:22:14,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:22:14,193 INFO L478 AbstractCegarLoop]: Abstraction has 219 states and 227 transitions. [2022-03-20 08:22:14,193 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) [2022-03-20 08:22:14,193 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 227 transitions. [2022-03-20 08:22:14,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-03-20 08:22:14,194 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:22:14,194 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] [2022-03-20 08:22:14,211 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-03-20 08:22:14,398 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 [2022-03-20 08:22:14,399 INFO L403 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:22:14,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:22:14,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1082933460, now seen corresponding path program 25 times [2022-03-20 08:22:14,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:22:14,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170053611] [2022-03-20 08:22:14,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:22:14,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:22:14,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:14,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:22:14,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:15,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-03-20 08:22:15,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:15,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-03-20 08:22:15,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:15,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-03-20 08:22:15,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:15,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-03-20 08:22:15,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:15,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-03-20 08:22:15,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:15,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-03-20 08:22:15,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:15,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-03-20 08:22:15,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:15,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-03-20 08:22:15,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:15,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-03-20 08:22:15,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:15,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-03-20 08:22:15,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:15,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-03-20 08:22:15,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:15,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-03-20 08:22:15,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:15,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-03-20 08:22:15,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:15,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-03-20 08:22:15,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:15,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-03-20 08:22:15,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:15,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-03-20 08:22:15,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:15,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-03-20 08:22:15,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:15,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-03-20 08:22:15,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:15,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-03-20 08:22:15,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:15,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-03-20 08:22:15,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:15,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-03-20 08:22:15,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:15,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-03-20 08:22:15,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:15,054 INFO L134 CoverageAnalysis]: Checked inductivity of 2398 backedges. 949 proven. 525 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2022-03-20 08:22:15,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:22:15,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170053611] [2022-03-20 08:22:15,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170053611] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:22:15,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903232154] [2022-03-20 08:22:15,054 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-20 08:22:15,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:22:15,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:22:15,056 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) [2022-03-20 08:22:15,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-03-20 08:22:15,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:15,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 652 conjuncts, 46 conjunts are in the unsatisfiable core [2022-03-20 08:22:15,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:22:16,102 INFO L134 CoverageAnalysis]: Checked inductivity of 2398 backedges. 1092 proven. 462 refuted. 0 times theorem prover too weak. 844 trivial. 0 not checked. [2022-03-20 08:22:16,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:22:16,410 INFO L134 CoverageAnalysis]: Checked inductivity of 2398 backedges. 1010 proven. 462 refuted. 0 times theorem prover too weak. 926 trivial. 0 not checked. [2022-03-20 08:22:16,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903232154] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:22:16,410 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:22:16,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 46, 46] total 72 [2022-03-20 08:22:16,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580414158] [2022-03-20 08:22:16,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:22:16,411 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-03-20 08:22:16,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:22:16,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-03-20 08:22:16,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1133, Invalid=3979, Unknown=0, NotChecked=0, Total=5112 [2022-03-20 08:22:16,412 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) [2022-03-20 08:22:17,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:22:17,568 INFO L93 Difference]: Finished difference Result 410 states and 484 transitions. [2022-03-20 08:22:17,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-20 08:22:17,569 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 [2022-03-20 08:22:17,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:22:17,570 INFO L225 Difference]: With dead ends: 410 [2022-03-20 08:22:17,570 INFO L226 Difference]: Without dead ends: 309 [2022-03-20 08:22:17,572 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 [2022-03-20 08:22:17,572 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 [2022-03-20 08:22:17,572 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] [2022-03-20 08:22:17,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2022-03-20 08:22:17,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 221. [2022-03-20 08:22:17,584 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) [2022-03-20 08:22:17,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 229 transitions. [2022-03-20 08:22:17,586 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 229 transitions. Word has length 236 [2022-03-20 08:22:17,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:22:17,586 INFO L478 AbstractCegarLoop]: Abstraction has 221 states and 229 transitions. [2022-03-20 08:22:17,586 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) [2022-03-20 08:22:17,586 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 229 transitions. [2022-03-20 08:22:17,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2022-03-20 08:22:17,587 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:22:17,587 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] [2022-03-20 08:22:17,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-03-20 08:22:17,804 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 [2022-03-20 08:22:17,805 INFO L403 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:22:17,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:22:17,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1034320497, now seen corresponding path program 26 times [2022-03-20 08:22:17,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:22:17,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758829618] [2022-03-20 08:22:17,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:22:17,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:22:17,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:18,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:22:18,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:18,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-03-20 08:22:18,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:18,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-03-20 08:22:18,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:18,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-03-20 08:22:18,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:18,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-03-20 08:22:18,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:18,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-03-20 08:22:18,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:18,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-03-20 08:22:18,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:18,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-03-20 08:22:18,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:18,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-03-20 08:22:18,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:18,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-03-20 08:22:18,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:18,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-03-20 08:22:18,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:18,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-03-20 08:22:18,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:18,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-03-20 08:22:18,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:18,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-03-20 08:22:18,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:18,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-03-20 08:22:18,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:18,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-03-20 08:22:18,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:18,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-03-20 08:22:18,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:18,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-03-20 08:22:18,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:18,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-03-20 08:22:18,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:18,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-03-20 08:22:18,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:18,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-03-20 08:22:18,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:18,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-03-20 08:22:18,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:18,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-03-20 08:22:18,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:18,464 INFO L134 CoverageAnalysis]: Checked inductivity of 2442 backedges. 949 proven. 569 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2022-03-20 08:22:18,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:22:18,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758829618] [2022-03-20 08:22:18,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758829618] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:22:18,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710322443] [2022-03-20 08:22:18,464 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 08:22:18,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:22:18,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:22:18,466 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) [2022-03-20 08:22:18,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-03-20 08:22:18,546 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 08:22:18,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 08:22:18,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 662 conjuncts, 48 conjunts are in the unsatisfiable core [2022-03-20 08:22:18,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:22:19,340 INFO L134 CoverageAnalysis]: Checked inductivity of 2442 backedges. 550 proven. 968 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2022-03-20 08:22:19,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:22:19,658 INFO L134 CoverageAnalysis]: Checked inductivity of 2442 backedges. 550 proven. 968 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2022-03-20 08:22:19,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [710322443] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:22:19,658 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:22:19,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 27, 27] total 74 [2022-03-20 08:22:19,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667185171] [2022-03-20 08:22:19,658 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:22:19,659 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2022-03-20 08:22:19,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:22:19,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2022-03-20 08:22:19,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=882, Invalid=4520, Unknown=0, NotChecked=0, Total=5402 [2022-03-20 08:22:19,660 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) [2022-03-20 08:22:22,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:22:22,098 INFO L93 Difference]: Finished difference Result 423 states and 501 transitions. [2022-03-20 08:22:22,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-03-20 08:22:22,099 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 [2022-03-20 08:22:22,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:22:22,100 INFO L225 Difference]: With dead ends: 423 [2022-03-20 08:22:22,100 INFO L226 Difference]: Without dead ends: 324 [2022-03-20 08:22:22,102 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 [2022-03-20 08:22:22,103 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 [2022-03-20 08:22:22,103 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] [2022-03-20 08:22:22,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2022-03-20 08:22:22,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 231. [2022-03-20 08:22:22,114 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) [2022-03-20 08:22:22,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 239 transitions. [2022-03-20 08:22:22,115 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 239 transitions. Word has length 238 [2022-03-20 08:22:22,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:22:22,115 INFO L478 AbstractCegarLoop]: Abstraction has 231 states and 239 transitions. [2022-03-20 08:22:22,115 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) [2022-03-20 08:22:22,115 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 239 transitions. [2022-03-20 08:22:22,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2022-03-20 08:22:22,116 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:22:22,116 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] [2022-03-20 08:22:22,134 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2022-03-20 08:22:22,322 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 [2022-03-20 08:22:22,323 INFO L403 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:22:22,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:22:22,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1502889018, now seen corresponding path program 27 times [2022-03-20 08:22:22,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:22:22,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966326847] [2022-03-20 08:22:22,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:22:22,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:22:22,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:22,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:22:22,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:22,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-03-20 08:22:22,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:22,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-03-20 08:22:22,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:22,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-03-20 08:22:22,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:22,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-03-20 08:22:22,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:22,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-03-20 08:22:22,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:22,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-03-20 08:22:22,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:22,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-03-20 08:22:22,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:22,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-03-20 08:22:22,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:22,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-03-20 08:22:22,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:22,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-03-20 08:22:22,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:22,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-03-20 08:22:22,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:22,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-03-20 08:22:22,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:22,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-03-20 08:22:22,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:22,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-03-20 08:22:22,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:22,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-03-20 08:22:22,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:22,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-03-20 08:22:22,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:22,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-03-20 08:22:22,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:22,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-03-20 08:22:22,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:22,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-03-20 08:22:22,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:22,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-03-20 08:22:22,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:22,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-03-20 08:22:22,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:22,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-03-20 08:22:22,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:23,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-03-20 08:22:23,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:23,003 INFO L134 CoverageAnalysis]: Checked inductivity of 2668 backedges. 1038 proven. 618 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2022-03-20 08:22:23,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:22:23,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966326847] [2022-03-20 08:22:23,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966326847] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:22:23,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325931265] [2022-03-20 08:22:23,004 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-20 08:22:23,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:22:23,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:22:23,005 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) [2022-03-20 08:22:23,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-03-20 08:22:23,109 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2022-03-20 08:22:23,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 08:22:23,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 689 conjuncts, 50 conjunts are in the unsatisfiable core [2022-03-20 08:22:23,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:22:23,960 INFO L134 CoverageAnalysis]: Checked inductivity of 2668 backedges. 598 proven. 1058 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2022-03-20 08:22:23,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:22:24,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2668 backedges. 598 proven. 1058 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2022-03-20 08:22:24,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325931265] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:22:24,298 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:22:24,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 28, 28] total 77 [2022-03-20 08:22:24,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285789612] [2022-03-20 08:22:24,298 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:22:24,299 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2022-03-20 08:22:24,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:22:24,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2022-03-20 08:22:24,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=956, Invalid=4896, Unknown=0, NotChecked=0, Total=5852 [2022-03-20 08:22:24,300 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) [2022-03-20 08:22:26,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:22:26,852 INFO L93 Difference]: Finished difference Result 441 states and 522 transitions. [2022-03-20 08:22:26,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-03-20 08:22:26,852 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 [2022-03-20 08:22:26,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:22:26,855 INFO L225 Difference]: With dead ends: 441 [2022-03-20 08:22:26,855 INFO L226 Difference]: Without dead ends: 338 [2022-03-20 08:22:26,858 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 [2022-03-20 08:22:26,858 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 [2022-03-20 08:22:26,859 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] [2022-03-20 08:22:26,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2022-03-20 08:22:26,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 241. [2022-03-20 08:22:26,871 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) [2022-03-20 08:22:26,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 249 transitions. [2022-03-20 08:22:26,871 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 249 transitions. Word has length 248 [2022-03-20 08:22:26,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:22:26,872 INFO L478 AbstractCegarLoop]: Abstraction has 241 states and 249 transitions. [2022-03-20 08:22:26,872 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) [2022-03-20 08:22:26,872 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 249 transitions. [2022-03-20 08:22:26,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2022-03-20 08:22:26,873 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:22:26,873 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] [2022-03-20 08:22:26,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-03-20 08:22:27,075 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 [2022-03-20 08:22:27,075 INFO L403 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:22:27,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:22:27,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1900930243, now seen corresponding path program 28 times [2022-03-20 08:22:27,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:22:27,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039537153] [2022-03-20 08:22:27,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:22:27,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:22:27,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:27,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:22:27,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:27,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-03-20 08:22:27,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:27,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-03-20 08:22:27,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:27,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-03-20 08:22:27,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:27,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-03-20 08:22:27,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:27,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-03-20 08:22:27,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:27,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-03-20 08:22:27,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:27,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-03-20 08:22:27,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:27,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-03-20 08:22:27,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:27,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-03-20 08:22:27,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:27,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-03-20 08:22:27,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:27,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-03-20 08:22:27,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:27,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-03-20 08:22:27,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:27,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-03-20 08:22:27,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:27,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-03-20 08:22:27,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:27,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-03-20 08:22:27,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:27,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-03-20 08:22:27,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:27,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-03-20 08:22:27,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:27,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-03-20 08:22:27,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:27,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-03-20 08:22:27,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:27,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-03-20 08:22:27,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:27,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-03-20 08:22:27,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:27,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-03-20 08:22:27,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:27,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-03-20 08:22:27,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:27,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-03-20 08:22:27,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:27,783 INFO L134 CoverageAnalysis]: Checked inductivity of 2904 backedges. 1131 proven. 669 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2022-03-20 08:22:27,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:22:27,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039537153] [2022-03-20 08:22:27,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039537153] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:22:27,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382557619] [2022-03-20 08:22:27,783 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-20 08:22:27,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:22:27,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:22:27,784 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) [2022-03-20 08:22:27,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-03-20 08:22:27,866 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-20 08:22:27,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 08:22:27,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 716 conjuncts, 52 conjunts are in the unsatisfiable core [2022-03-20 08:22:27,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:22:28,779 INFO L134 CoverageAnalysis]: Checked inductivity of 2904 backedges. 648 proven. 1152 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2022-03-20 08:22:28,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:22:29,156 INFO L134 CoverageAnalysis]: Checked inductivity of 2904 backedges. 648 proven. 1152 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2022-03-20 08:22:29,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382557619] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:22:29,156 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:22:29,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 29, 29] total 80 [2022-03-20 08:22:29,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159904124] [2022-03-20 08:22:29,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:22:29,157 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2022-03-20 08:22:29,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:22:29,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2022-03-20 08:22:29,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1033, Invalid=5287, Unknown=0, NotChecked=0, Total=6320 [2022-03-20 08:22:29,158 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) [2022-03-20 08:22:31,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:22:31,650 INFO L93 Difference]: Finished difference Result 459 states and 543 transitions. [2022-03-20 08:22:31,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-03-20 08:22:31,651 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 [2022-03-20 08:22:31,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:22:31,652 INFO L225 Difference]: With dead ends: 459 [2022-03-20 08:22:31,652 INFO L226 Difference]: Without dead ends: 352 [2022-03-20 08:22:31,655 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 745 GetRequests, 565 SyntacticMatches, 1 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11014 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=5511, Invalid=27069, Unknown=0, NotChecked=0, Total=32580 [2022-03-20 08:22:31,656 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 [2022-03-20 08:22:31,656 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] [2022-03-20 08:22:31,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2022-03-20 08:22:31,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 251. [2022-03-20 08:22:31,670 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) [2022-03-20 08:22:31,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 259 transitions. [2022-03-20 08:22:31,671 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 259 transitions. Word has length 258 [2022-03-20 08:22:31,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:22:31,671 INFO L478 AbstractCegarLoop]: Abstraction has 251 states and 259 transitions. [2022-03-20 08:22:31,672 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) [2022-03-20 08:22:31,672 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 259 transitions. [2022-03-20 08:22:31,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2022-03-20 08:22:31,674 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:22:31,674 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] [2022-03-20 08:22:31,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-03-20 08:22:31,874 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 [2022-03-20 08:22:31,875 INFO L403 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:22:31,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:22:31,875 INFO L85 PathProgramCache]: Analyzing trace with hash 462951412, now seen corresponding path program 29 times [2022-03-20 08:22:31,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:22:31,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513800224] [2022-03-20 08:22:31,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:22:31,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:22:31,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:32,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:22:32,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:32,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-03-20 08:22:32,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:32,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-03-20 08:22:32,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:32,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-03-20 08:22:32,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:32,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-03-20 08:22:32,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:32,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-03-20 08:22:32,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:32,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-03-20 08:22:32,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:32,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-03-20 08:22:32,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:32,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-03-20 08:22:32,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:32,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-03-20 08:22:32,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:32,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-03-20 08:22:32,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:32,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-03-20 08:22:32,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:32,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-03-20 08:22:32,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:32,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-03-20 08:22:32,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:32,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-03-20 08:22:32,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:32,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-03-20 08:22:32,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:32,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-03-20 08:22:32,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:32,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-03-20 08:22:32,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:32,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-03-20 08:22:32,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:32,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-03-20 08:22:32,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:32,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-03-20 08:22:32,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:32,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-03-20 08:22:32,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:32,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-03-20 08:22:32,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:32,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-03-20 08:22:32,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:32,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-03-20 08:22:32,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:32,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-03-20 08:22:32,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:32,651 INFO L134 CoverageAnalysis]: Checked inductivity of 3150 backedges. 1228 proven. 722 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2022-03-20 08:22:32,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:22:32,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513800224] [2022-03-20 08:22:32,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513800224] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:22:32,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634180855] [2022-03-20 08:22:32,651 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-20 08:22:32,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:22:32,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:22:32,652 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) [2022-03-20 08:22:32,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-03-20 08:22:32,760 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) [2022-03-20 08:22:32,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 08:22:32,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 743 conjuncts, 54 conjunts are in the unsatisfiable core [2022-03-20 08:22:32,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:22:33,987 INFO L134 CoverageAnalysis]: Checked inductivity of 3150 backedges. 1300 proven. 650 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2022-03-20 08:22:33,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:22:34,337 INFO L134 CoverageAnalysis]: Checked inductivity of 3150 backedges. 1300 proven. 650 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2022-03-20 08:22:34,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634180855] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:22:34,337 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:22:34,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 54, 54] total 83 [2022-03-20 08:22:34,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274451221] [2022-03-20 08:22:34,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:22:34,338 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2022-03-20 08:22:34,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:22:34,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2022-03-20 08:22:34,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1517, Invalid=5289, Unknown=0, NotChecked=0, Total=6806 [2022-03-20 08:22:34,339 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) [2022-03-20 08:22:35,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:22:35,813 INFO L93 Difference]: Finished difference Result 468 states and 554 transitions. [2022-03-20 08:22:35,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-03-20 08:22:35,813 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 [2022-03-20 08:22:35,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:22:35,815 INFO L225 Difference]: With dead ends: 468 [2022-03-20 08:22:35,815 INFO L226 Difference]: Without dead ends: 357 [2022-03-20 08:22:35,817 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 [2022-03-20 08:22:35,817 INFO L913 BasicCegarLoop]: 64 mSDtfsCounter, 501 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1634 mSolverCounterSat, 352 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2022-03-20 08:22:35,817 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [502 Valid, 116 Invalid, 1986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [352 Valid, 1634 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-20 08:22:35,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2022-03-20 08:22:35,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 253. [2022-03-20 08:22:35,850 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) [2022-03-20 08:22:35,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 261 transitions. [2022-03-20 08:22:35,851 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 261 transitions. Word has length 268 [2022-03-20 08:22:35,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:22:35,852 INFO L478 AbstractCegarLoop]: Abstraction has 253 states and 261 transitions. [2022-03-20 08:22:35,852 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) [2022-03-20 08:22:35,852 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 261 transitions. [2022-03-20 08:22:35,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2022-03-20 08:22:35,853 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:22:35,853 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] [2022-03-20 08:22:35,874 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-03-20 08:22:36,059 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 [2022-03-20 08:22:36,059 INFO L403 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:22:36,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:22:36,060 INFO L85 PathProgramCache]: Analyzing trace with hash -799830441, now seen corresponding path program 30 times [2022-03-20 08:22:36,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:22:36,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333446682] [2022-03-20 08:22:36,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:22:36,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:22:36,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:36,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:22:36,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:36,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-03-20 08:22:36,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:36,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-03-20 08:22:36,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:36,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-03-20 08:22:36,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:36,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-03-20 08:22:36,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:36,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-03-20 08:22:36,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:36,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-03-20 08:22:36,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:36,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-03-20 08:22:36,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:36,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-03-20 08:22:36,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:36,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-03-20 08:22:36,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:36,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-03-20 08:22:36,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:36,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-03-20 08:22:36,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:36,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-03-20 08:22:36,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:36,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-03-20 08:22:36,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:36,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-03-20 08:22:36,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:36,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-03-20 08:22:36,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:36,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-03-20 08:22:36,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:36,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-03-20 08:22:36,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:36,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-03-20 08:22:36,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:36,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-03-20 08:22:36,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:36,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-03-20 08:22:36,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:36,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-03-20 08:22:36,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:36,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-03-20 08:22:36,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:36,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-03-20 08:22:36,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:36,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-03-20 08:22:36,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:36,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-03-20 08:22:36,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:36,456 INFO L134 CoverageAnalysis]: Checked inductivity of 3202 backedges. 700 proven. 1302 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2022-03-20 08:22:36,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:22:36,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333446682] [2022-03-20 08:22:36,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333446682] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:22:36,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27069333] [2022-03-20 08:22:36,456 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-20 08:22:36,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:22:36,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:22:36,457 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) [2022-03-20 08:22:36,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-03-20 08:22:36,575 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2022-03-20 08:22:36,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 08:22:36,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 753 conjuncts, 55 conjunts are in the unsatisfiable core [2022-03-20 08:22:36,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:22:36,933 INFO L134 CoverageAnalysis]: Checked inductivity of 3202 backedges. 752 proven. 1250 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2022-03-20 08:22:36,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:22:37,281 INFO L134 CoverageAnalysis]: Checked inductivity of 3202 backedges. 752 proven. 1250 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2022-03-20 08:22:37,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27069333] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:22:37,282 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:22:37,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 31, 31] total 36 [2022-03-20 08:22:37,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108368108] [2022-03-20 08:22:37,282 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:22:37,283 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-03-20 08:22:37,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:22:37,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-03-20 08:22:37,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=451, Invalid=809, Unknown=0, NotChecked=0, Total=1260 [2022-03-20 08:22:37,283 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) [2022-03-20 08:22:37,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:22:37,896 INFO L93 Difference]: Finished difference Result 272 states and 282 transitions. [2022-03-20 08:22:37,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-20 08:22:37,896 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 [2022-03-20 08:22:37,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:22:37,897 INFO L225 Difference]: With dead ends: 272 [2022-03-20 08:22:37,897 INFO L226 Difference]: Without dead ends: 270 [2022-03-20 08:22:37,898 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 [2022-03-20 08:22:37,898 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 [2022-03-20 08:22:37,898 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] [2022-03-20 08:22:37,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2022-03-20 08:22:37,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 265. [2022-03-20 08:22:37,911 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) [2022-03-20 08:22:37,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 274 transitions. [2022-03-20 08:22:37,911 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 274 transitions. Word has length 270 [2022-03-20 08:22:37,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:22:37,912 INFO L478 AbstractCegarLoop]: Abstraction has 265 states and 274 transitions. [2022-03-20 08:22:37,912 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) [2022-03-20 08:22:37,912 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 274 transitions. [2022-03-20 08:22:37,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2022-03-20 08:22:37,913 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:22:37,913 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] [2022-03-20 08:22:37,933 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-03-20 08:22:38,122 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 [2022-03-20 08:22:38,122 INFO L403 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:22:38,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:22:38,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1396717185, now seen corresponding path program 31 times [2022-03-20 08:22:38,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:22:38,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96188837] [2022-03-20 08:22:38,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:22:38,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:22:38,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:38,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:22:38,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:38,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-03-20 08:22:38,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:38,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-03-20 08:22:38,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:38,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-03-20 08:22:38,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:38,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-03-20 08:22:38,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:38,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-03-20 08:22:38,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:38,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-03-20 08:22:38,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:38,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-03-20 08:22:38,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:38,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-03-20 08:22:38,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:38,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-03-20 08:22:38,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:38,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-03-20 08:22:38,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:38,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-03-20 08:22:38,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:38,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-03-20 08:22:38,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:38,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-03-20 08:22:38,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:38,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-03-20 08:22:38,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:38,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-03-20 08:22:38,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:38,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-03-20 08:22:38,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:38,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-03-20 08:22:38,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:38,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-03-20 08:22:38,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:38,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-03-20 08:22:38,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:38,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-03-20 08:22:38,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:38,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-03-20 08:22:38,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:38,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-03-20 08:22:38,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:38,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-03-20 08:22:38,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:38,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-03-20 08:22:38,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:38,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-03-20 08:22:38,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:38,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-03-20 08:22:38,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:38,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-03-20 08:22:38,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:38,965 INFO L134 CoverageAnalysis]: Checked inductivity of 3618 backedges. 1434 proven. 780 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2022-03-20 08:22:38,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:22:38,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96188837] [2022-03-20 08:22:38,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96188837] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:22:38,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800640350] [2022-03-20 08:22:38,965 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-20 08:22:38,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:22:38,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:22:38,967 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) [2022-03-20 08:22:38,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-03-20 08:22:39,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:39,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 787 conjuncts, 56 conjunts are in the unsatisfiable core [2022-03-20 08:22:39,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:22:40,378 INFO L134 CoverageAnalysis]: Checked inductivity of 3618 backedges. 1612 proven. 702 refuted. 0 times theorem prover too weak. 1304 trivial. 0 not checked. [2022-03-20 08:22:40,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:22:40,760 INFO L134 CoverageAnalysis]: Checked inductivity of 3618 backedges. 1510 proven. 702 refuted. 0 times theorem prover too weak. 1406 trivial. 0 not checked. [2022-03-20 08:22:40,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800640350] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:22:40,760 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:22:40,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 56, 56] total 87 [2022-03-20 08:22:40,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004793223] [2022-03-20 08:22:40,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:22:40,761 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2022-03-20 08:22:40,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:22:40,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2022-03-20 08:22:40,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1658, Invalid=5824, Unknown=0, NotChecked=0, Total=7482 [2022-03-20 08:22:40,762 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) [2022-03-20 08:22:42,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:22:42,275 INFO L93 Difference]: Finished difference Result 496 states and 586 transitions. [2022-03-20 08:22:42,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-03-20 08:22:42,276 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 [2022-03-20 08:22:42,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:22:42,277 INFO L225 Difference]: With dead ends: 496 [2022-03-20 08:22:42,277 INFO L226 Difference]: Without dead ends: 375 [2022-03-20 08:22:42,279 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 765 GetRequests, 626 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5356 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=4387, Invalid=15353, Unknown=0, NotChecked=0, Total=19740 [2022-03-20 08:22:42,279 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 [2022-03-20 08:22:42,280 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] [2022-03-20 08:22:42,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2022-03-20 08:22:42,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 267. [2022-03-20 08:22:42,292 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) [2022-03-20 08:22:42,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 276 transitions. [2022-03-20 08:22:42,293 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 276 transitions. Word has length 286 [2022-03-20 08:22:42,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:22:42,293 INFO L478 AbstractCegarLoop]: Abstraction has 267 states and 276 transitions. [2022-03-20 08:22:42,293 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) [2022-03-20 08:22:42,294 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 276 transitions. [2022-03-20 08:22:42,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2022-03-20 08:22:42,295 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:22:42,295 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] [2022-03-20 08:22:42,315 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2022-03-20 08:22:42,511 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 [2022-03-20 08:22:42,511 INFO L403 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:22:42,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:22:42,512 INFO L85 PathProgramCache]: Analyzing trace with hash -2076929758, now seen corresponding path program 32 times [2022-03-20 08:22:42,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:22:42,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116585709] [2022-03-20 08:22:42,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:22:42,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:22:42,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:43,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:22:43,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:43,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-03-20 08:22:43,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:43,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-03-20 08:22:43,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:43,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-03-20 08:22:43,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:43,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-03-20 08:22:43,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:43,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-03-20 08:22:43,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:43,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-03-20 08:22:43,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:43,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-03-20 08:22:43,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:43,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-03-20 08:22:43,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:43,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-03-20 08:22:43,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:43,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-03-20 08:22:43,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:43,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-03-20 08:22:43,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:43,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-03-20 08:22:43,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:43,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-03-20 08:22:43,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:43,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-03-20 08:22:43,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:43,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-03-20 08:22:43,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:43,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-03-20 08:22:43,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:43,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-03-20 08:22:43,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:43,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-03-20 08:22:43,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:43,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-03-20 08:22:43,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:43,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-03-20 08:22:43,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:43,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-03-20 08:22:43,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:43,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-03-20 08:22:43,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:43,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-03-20 08:22:43,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:43,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-03-20 08:22:43,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:43,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-03-20 08:22:43,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:43,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-03-20 08:22:43,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:43,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-03-20 08:22:43,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:43,377 INFO L134 CoverageAnalysis]: Checked inductivity of 3672 backedges. 1434 proven. 834 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2022-03-20 08:22:43,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:22:43,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116585709] [2022-03-20 08:22:43,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116585709] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:22:43,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595406049] [2022-03-20 08:22:43,377 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 08:22:43,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:22:43,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:22:43,378 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) [2022-03-20 08:22:43,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-03-20 08:22:43,468 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 08:22:43,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 08:22:43,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 797 conjuncts, 58 conjunts are in the unsatisfiable core [2022-03-20 08:22:43,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:22:44,526 INFO L134 CoverageAnalysis]: Checked inductivity of 3672 backedges. 810 proven. 1458 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2022-03-20 08:22:44,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:22:44,931 INFO L134 CoverageAnalysis]: Checked inductivity of 3672 backedges. 810 proven. 1458 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2022-03-20 08:22:44,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [595406049] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:22:44,931 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:22:44,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 32, 32] total 89 [2022-03-20 08:22:44,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015297709] [2022-03-20 08:22:44,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:22:44,932 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2022-03-20 08:22:44,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:22:44,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2022-03-20 08:22:44,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1282, Invalid=6550, Unknown=0, NotChecked=0, Total=7832 [2022-03-20 08:22:44,933 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) [2022-03-20 08:22:48,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:22:48,104 INFO L93 Difference]: Finished difference Result 509 states and 603 transitions. [2022-03-20 08:22:48,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2022-03-20 08:22:48,105 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 [2022-03-20 08:22:48,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:22:48,106 INFO L225 Difference]: With dead ends: 509 [2022-03-20 08:22:48,106 INFO L226 Difference]: Without dead ends: 390 [2022-03-20 08:22:48,109 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 832 GetRequests, 631 SyntacticMatches, 1 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13849 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=6843, Invalid=33759, Unknown=0, NotChecked=0, Total=40602 [2022-03-20 08:22:48,109 INFO L913 BasicCegarLoop]: 93 mSDtfsCounter, 972 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 3561 mSolverCounterSat, 789 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s 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, 1.3s IncrementalHoareTripleChecker+Time [2022-03-20 08:22:48,109 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [973 Valid, 175 Invalid, 4350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [789 Valid, 3561 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-20 08:22:48,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2022-03-20 08:22:48,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 277. [2022-03-20 08:22:48,123 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) [2022-03-20 08:22:48,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 286 transitions. [2022-03-20 08:22:48,123 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 286 transitions. Word has length 288 [2022-03-20 08:22:48,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:22:48,124 INFO L478 AbstractCegarLoop]: Abstraction has 277 states and 286 transitions. [2022-03-20 08:22:48,124 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) [2022-03-20 08:22:48,124 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 286 transitions. [2022-03-20 08:22:48,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-03-20 08:22:48,125 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:22:48,125 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] [2022-03-20 08:22:48,143 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2022-03-20 08:22:48,337 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 [2022-03-20 08:22:48,338 INFO L403 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:22:48,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:22:48,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1023800729, now seen corresponding path program 33 times [2022-03-20 08:22:48,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:22:48,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867491865] [2022-03-20 08:22:48,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:22:48,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:22:48,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:49,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:22:49,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:49,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-03-20 08:22:49,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:49,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-03-20 08:22:49,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:49,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-03-20 08:22:49,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:49,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-03-20 08:22:49,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:49,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-03-20 08:22:49,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:49,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-03-20 08:22:49,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:49,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-03-20 08:22:49,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:49,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-03-20 08:22:49,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:49,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-03-20 08:22:49,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:49,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-03-20 08:22:49,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:49,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-03-20 08:22:49,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:49,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-03-20 08:22:49,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:49,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-03-20 08:22:49,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:49,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-03-20 08:22:49,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:49,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-03-20 08:22:49,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:49,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-03-20 08:22:49,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:49,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-03-20 08:22:49,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:49,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-03-20 08:22:49,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:49,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-03-20 08:22:49,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:49,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-03-20 08:22:49,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:49,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-03-20 08:22:49,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:49,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-03-20 08:22:49,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:49,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-03-20 08:22:49,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:49,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-03-20 08:22:49,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:49,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-03-20 08:22:49,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:49,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-03-20 08:22:49,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:49,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-03-20 08:22:49,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:49,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-03-20 08:22:49,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:49,262 INFO L134 CoverageAnalysis]: Checked inductivity of 3948 backedges. 1543 proven. 893 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2022-03-20 08:22:49,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:22:49,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867491865] [2022-03-20 08:22:49,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867491865] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:22:49,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228499535] [2022-03-20 08:22:49,263 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-20 08:22:49,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:22:49,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:22:49,264 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) [2022-03-20 08:22:49,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-03-20 08:22:49,396 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 29 check-sat command(s) [2022-03-20 08:22:49,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 08:22:49,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 824 conjuncts, 60 conjunts are in the unsatisfiable core [2022-03-20 08:22:49,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:22:50,544 INFO L134 CoverageAnalysis]: Checked inductivity of 3948 backedges. 868 proven. 1568 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2022-03-20 08:22:50,545 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:22:50,943 INFO L134 CoverageAnalysis]: Checked inductivity of 3948 backedges. 868 proven. 1568 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2022-03-20 08:22:50,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228499535] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:22:50,944 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:22:50,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 33, 33] total 92 [2022-03-20 08:22:50,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449817169] [2022-03-20 08:22:50,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:22:50,944 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2022-03-20 08:22:50,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:22:50,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2022-03-20 08:22:50,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1371, Invalid=7001, Unknown=0, NotChecked=0, Total=8372 [2022-03-20 08:22:50,946 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) [2022-03-20 08:22:54,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:22:54,200 INFO L93 Difference]: Finished difference Result 527 states and 624 transitions. [2022-03-20 08:22:54,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2022-03-20 08:22:54,201 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 [2022-03-20 08:22:54,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:22:54,205 INFO L225 Difference]: With dead ends: 527 [2022-03-20 08:22:54,205 INFO L226 Difference]: Without dead ends: 404 [2022-03-20 08:22:54,208 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 [2022-03-20 08:22:54,209 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 [2022-03-20 08:22:54,209 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] [2022-03-20 08:22:54,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2022-03-20 08:22:54,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 287. [2022-03-20 08:22:54,226 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) [2022-03-20 08:22:54,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 296 transitions. [2022-03-20 08:22:54,227 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 296 transitions. Word has length 298 [2022-03-20 08:22:54,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:22:54,227 INFO L478 AbstractCegarLoop]: Abstraction has 287 states and 296 transitions. [2022-03-20 08:22:54,227 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) [2022-03-20 08:22:54,227 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 296 transitions. [2022-03-20 08:22:54,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2022-03-20 08:22:54,228 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:22:54,228 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] [2022-03-20 08:22:54,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-03-20 08:22:54,443 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 [2022-03-20 08:22:54,443 INFO L403 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:22:54,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:22:54,444 INFO L85 PathProgramCache]: Analyzing trace with hash 313307984, now seen corresponding path program 34 times [2022-03-20 08:22:54,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:22:54,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397368582] [2022-03-20 08:22:54,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:22:54,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:22:54,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:55,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:22:55,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:55,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-03-20 08:22:55,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:55,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-03-20 08:22:55,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:55,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-03-20 08:22:55,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:55,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-03-20 08:22:55,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:55,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-03-20 08:22:55,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:55,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-03-20 08:22:55,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:55,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-03-20 08:22:55,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:55,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-03-20 08:22:55,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:55,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-03-20 08:22:55,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:55,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-03-20 08:22:55,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:55,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-03-20 08:22:55,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:55,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-03-20 08:22:55,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:55,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-03-20 08:22:55,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:55,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-03-20 08:22:55,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:55,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-03-20 08:22:55,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:55,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-03-20 08:22:55,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:55,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-03-20 08:22:55,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:55,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-03-20 08:22:55,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:55,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-03-20 08:22:55,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:55,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-03-20 08:22:55,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:55,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-03-20 08:22:55,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:55,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-03-20 08:22:55,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:55,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-03-20 08:22:55,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:55,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-03-20 08:22:55,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:55,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-03-20 08:22:55,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:55,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-03-20 08:22:55,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:55,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-03-20 08:22:55,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:55,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-03-20 08:22:55,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:55,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-03-20 08:22:55,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:22:55,424 INFO L134 CoverageAnalysis]: Checked inductivity of 4234 backedges. 1656 proven. 954 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2022-03-20 08:22:55,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:22:55,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397368582] [2022-03-20 08:22:55,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397368582] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:22:55,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376897770] [2022-03-20 08:22:55,425 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-20 08:22:55,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:22:55,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:22:55,426 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) [2022-03-20 08:22:55,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-03-20 08:22:55,524 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-20 08:22:55,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 08:22:55,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 851 conjuncts, 62 conjunts are in the unsatisfiable core [2022-03-20 08:22:55,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:22:56,732 INFO L134 CoverageAnalysis]: Checked inductivity of 4234 backedges. 928 proven. 1682 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2022-03-20 08:22:56,732 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:22:57,142 INFO L134 CoverageAnalysis]: Checked inductivity of 4234 backedges. 928 proven. 1682 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2022-03-20 08:22:57,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376897770] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:22:57,143 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:22:57,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 34, 34] total 95 [2022-03-20 08:22:57,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373545257] [2022-03-20 08:22:57,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:22:57,144 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2022-03-20 08:22:57,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:22:57,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2022-03-20 08:22:57,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1463, Invalid=7467, Unknown=0, NotChecked=0, Total=8930 [2022-03-20 08:22:57,145 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) [2022-03-20 08:23:00,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:23:00,489 INFO L93 Difference]: Finished difference Result 545 states and 645 transitions. [2022-03-20 08:23:00,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2022-03-20 08:23:00,490 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 [2022-03-20 08:23:00,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:23:00,492 INFO L225 Difference]: With dead ends: 545 [2022-03-20 08:23:00,492 INFO L226 Difference]: Without dead ends: 418 [2022-03-20 08:23:00,495 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 890 GetRequests, 675 SyntacticMatches, 1 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15919 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=7811, Invalid=38629, Unknown=0, NotChecked=0, Total=46440 [2022-03-20 08:23:00,496 INFO L913 BasicCegarLoop]: 99 mSDtfsCounter, 838 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 3433 mSolverCounterSat, 805 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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 [2022-03-20 08:23:00,496 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] [2022-03-20 08:23:00,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2022-03-20 08:23:00,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 297. [2022-03-20 08:23:00,512 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) [2022-03-20 08:23:00,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 306 transitions. [2022-03-20 08:23:00,513 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 306 transitions. Word has length 308 [2022-03-20 08:23:00,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:23:00,513 INFO L478 AbstractCegarLoop]: Abstraction has 297 states and 306 transitions. [2022-03-20 08:23:00,514 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) [2022-03-20 08:23:00,514 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 306 transitions. [2022-03-20 08:23:00,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2022-03-20 08:23:00,515 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:23:00,515 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] [2022-03-20 08:23:00,533 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2022-03-20 08:23:00,724 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 [2022-03-20 08:23:00,725 INFO L403 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:23:00,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:23:00,725 INFO L85 PathProgramCache]: Analyzing trace with hash 2077768263, now seen corresponding path program 35 times [2022-03-20 08:23:00,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:23:00,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943770463] [2022-03-20 08:23:00,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:23:00,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:23:00,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:01,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:23:01,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:01,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-03-20 08:23:01,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:01,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-03-20 08:23:01,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:01,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-03-20 08:23:01,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:01,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-03-20 08:23:01,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:01,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-03-20 08:23:01,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:01,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-03-20 08:23:01,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:01,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-03-20 08:23:01,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:01,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-03-20 08:23:01,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:01,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-03-20 08:23:01,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:01,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-03-20 08:23:01,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:01,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-03-20 08:23:01,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:01,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-03-20 08:23:01,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:01,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-03-20 08:23:01,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:01,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-03-20 08:23:01,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:01,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-03-20 08:23:01,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:01,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-03-20 08:23:01,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:01,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-03-20 08:23:01,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:01,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-03-20 08:23:01,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:01,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-03-20 08:23:01,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:01,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-03-20 08:23:01,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:01,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-03-20 08:23:01,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:01,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-03-20 08:23:01,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:01,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-03-20 08:23:01,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:01,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-03-20 08:23:01,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:01,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-03-20 08:23:01,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:01,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-03-20 08:23:01,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:01,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-03-20 08:23:01,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:01,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-03-20 08:23:01,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:01,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-03-20 08:23:01,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:01,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-03-20 08:23:01,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:01,739 INFO L134 CoverageAnalysis]: Checked inductivity of 4530 backedges. 1773 proven. 1017 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2022-03-20 08:23:01,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:23:01,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943770463] [2022-03-20 08:23:01,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943770463] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:23:01,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980634243] [2022-03-20 08:23:01,740 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-20 08:23:01,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:23:01,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:23:01,741 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) [2022-03-20 08:23:01,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-03-20 08:23:01,870 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2022-03-20 08:23:01,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 08:23:01,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 878 conjuncts, 64 conjunts are in the unsatisfiable core [2022-03-20 08:23:01,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:23:03,498 INFO L134 CoverageAnalysis]: Checked inductivity of 4530 backedges. 1860 proven. 930 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2022-03-20 08:23:03,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:23:03,944 INFO L134 CoverageAnalysis]: Checked inductivity of 4530 backedges. 1860 proven. 930 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2022-03-20 08:23:03,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1980634243] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:23:03,944 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:23:03,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 64, 64] total 98 [2022-03-20 08:23:03,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498587405] [2022-03-20 08:23:03,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:23:03,945 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2022-03-20 08:23:03,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:23:03,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2022-03-20 08:23:03,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2117, Invalid=7389, Unknown=0, NotChecked=0, Total=9506 [2022-03-20 08:23:03,946 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) [2022-03-20 08:23:05,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:23:05,791 INFO L93 Difference]: Finished difference Result 554 states and 656 transitions. [2022-03-20 08:23:05,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-03-20 08:23:05,792 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 [2022-03-20 08:23:05,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:23:05,794 INFO L225 Difference]: With dead ends: 554 [2022-03-20 08:23:05,794 INFO L226 Difference]: Without dead ends: 423 [2022-03-20 08:23:05,796 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 [2022-03-20 08:23:05,797 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 [2022-03-20 08:23:05,797 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] [2022-03-20 08:23:05,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2022-03-20 08:23:05,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 299. [2022-03-20 08:23:05,832 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) [2022-03-20 08:23:05,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 308 transitions. [2022-03-20 08:23:05,833 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 308 transitions. Word has length 318 [2022-03-20 08:23:05,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:23:05,833 INFO L478 AbstractCegarLoop]: Abstraction has 299 states and 308 transitions. [2022-03-20 08:23:05,833 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) [2022-03-20 08:23:05,834 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 308 transitions. [2022-03-20 08:23:05,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-03-20 08:23:05,835 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:23:05,835 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] [2022-03-20 08:23:05,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-03-20 08:23:06,048 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 [2022-03-20 08:23:06,048 INFO L403 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:23:06,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:23:06,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1456322026, now seen corresponding path program 36 times [2022-03-20 08:23:06,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:23:06,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089485592] [2022-03-20 08:23:06,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:23:06,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:23:06,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:06,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:23:06,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:06,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-03-20 08:23:06,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:06,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-03-20 08:23:06,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:06,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-03-20 08:23:06,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:06,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-03-20 08:23:06,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:06,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-03-20 08:23:06,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:06,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-03-20 08:23:06,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:06,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-03-20 08:23:06,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:06,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-03-20 08:23:06,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:06,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-03-20 08:23:06,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:06,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-03-20 08:23:06,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:06,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-03-20 08:23:06,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:06,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-03-20 08:23:06,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:06,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-03-20 08:23:06,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:06,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-03-20 08:23:06,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:06,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-03-20 08:23:06,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:06,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-03-20 08:23:06,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:06,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-03-20 08:23:06,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:06,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-03-20 08:23:06,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:06,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-03-20 08:23:06,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:06,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-03-20 08:23:06,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:06,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-03-20 08:23:06,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:06,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-03-20 08:23:06,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:06,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-03-20 08:23:06,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:06,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-03-20 08:23:06,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:06,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-03-20 08:23:06,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:06,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-03-20 08:23:06,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:06,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-03-20 08:23:06,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:06,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-03-20 08:23:06,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:06,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-03-20 08:23:06,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:06,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-03-20 08:23:06,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:06,545 INFO L134 CoverageAnalysis]: Checked inductivity of 4592 backedges. 990 proven. 1862 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2022-03-20 08:23:06,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:23:06,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089485592] [2022-03-20 08:23:06,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089485592] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:23:06,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292037183] [2022-03-20 08:23:06,545 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-20 08:23:06,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:23:06,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:23:06,547 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) [2022-03-20 08:23:06,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-03-20 08:23:06,681 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 32 check-sat command(s) [2022-03-20 08:23:06,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 08:23:06,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 888 conjuncts, 65 conjunts are in the unsatisfiable core [2022-03-20 08:23:06,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:23:07,124 INFO L134 CoverageAnalysis]: Checked inductivity of 4592 backedges. 1052 proven. 1800 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2022-03-20 08:23:07,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:23:07,528 INFO L134 CoverageAnalysis]: Checked inductivity of 4592 backedges. 1052 proven. 1800 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2022-03-20 08:23:07,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292037183] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:23:07,528 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:23:07,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 36, 36] total 41 [2022-03-20 08:23:07,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255375244] [2022-03-20 08:23:07,533 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:23:07,533 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-03-20 08:23:07,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:23:07,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-03-20 08:23:07,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=611, Invalid=1029, Unknown=0, NotChecked=0, Total=1640 [2022-03-20 08:23:07,534 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) [2022-03-20 08:23:08,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:23:08,291 INFO L93 Difference]: Finished difference Result 318 states and 329 transitions. [2022-03-20 08:23:08,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-20 08:23:08,292 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 [2022-03-20 08:23:08,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:23:08,293 INFO L225 Difference]: With dead ends: 318 [2022-03-20 08:23:08,293 INFO L226 Difference]: Without dead ends: 316 [2022-03-20 08:23:08,294 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 [2022-03-20 08:23:08,294 INFO L913 BasicCegarLoop]: 52 mSDtfsCounter, 166 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1051 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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 [2022-03-20 08:23:08,294 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] [2022-03-20 08:23:08,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2022-03-20 08:23:08,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 311. [2022-03-20 08:23:08,310 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) [2022-03-20 08:23:08,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 321 transitions. [2022-03-20 08:23:08,311 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 321 transitions. Word has length 320 [2022-03-20 08:23:08,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:23:08,311 INFO L478 AbstractCegarLoop]: Abstraction has 311 states and 321 transitions. [2022-03-20 08:23:08,311 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) [2022-03-20 08:23:08,311 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 321 transitions. [2022-03-20 08:23:08,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2022-03-20 08:23:08,313 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:23:08,313 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] [2022-03-20 08:23:08,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-03-20 08:23:08,531 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 [2022-03-20 08:23:08,531 INFO L403 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:23:08,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:23:08,531 INFO L85 PathProgramCache]: Analyzing trace with hash 831941394, now seen corresponding path program 37 times [2022-03-20 08:23:08,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:23:08,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359143397] [2022-03-20 08:23:08,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:23:08,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:23:08,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:09,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:23:09,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:09,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-03-20 08:23:09,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:09,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-03-20 08:23:09,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:09,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-03-20 08:23:09,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:09,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-03-20 08:23:09,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:09,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-03-20 08:23:09,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:09,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-03-20 08:23:09,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:09,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-03-20 08:23:09,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:09,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-03-20 08:23:09,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:09,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-03-20 08:23:09,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:09,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-03-20 08:23:09,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:09,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-03-20 08:23:09,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:09,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-03-20 08:23:09,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:09,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-03-20 08:23:09,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:09,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-03-20 08:23:09,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:09,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-03-20 08:23:09,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:09,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-03-20 08:23:09,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:09,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-03-20 08:23:09,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:09,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-03-20 08:23:09,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:09,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-03-20 08:23:09,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:09,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-03-20 08:23:09,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:09,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-03-20 08:23:09,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:09,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-03-20 08:23:09,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:09,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-03-20 08:23:09,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:09,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-03-20 08:23:09,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:09,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-03-20 08:23:09,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:09,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-03-20 08:23:09,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:09,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-03-20 08:23:09,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:09,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-03-20 08:23:09,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:09,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-03-20 08:23:09,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:09,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-03-20 08:23:09,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:09,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-03-20 08:23:09,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:09,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-03-20 08:23:09,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:09,640 INFO L134 CoverageAnalysis]: Checked inductivity of 5088 backedges. 2019 proven. 1085 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2022-03-20 08:23:09,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:23:09,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359143397] [2022-03-20 08:23:09,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359143397] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:23:09,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583517009] [2022-03-20 08:23:09,640 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-20 08:23:09,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:23:09,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:23:09,641 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) [2022-03-20 08:23:09,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-03-20 08:23:09,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:09,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 922 conjuncts, 66 conjunts are in the unsatisfiable core [2022-03-20 08:23:09,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:23:11,490 INFO L134 CoverageAnalysis]: Checked inductivity of 5088 backedges. 2232 proven. 992 refuted. 0 times theorem prover too weak. 1864 trivial. 0 not checked. [2022-03-20 08:23:11,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:23:11,921 INFO L134 CoverageAnalysis]: Checked inductivity of 5088 backedges. 2110 proven. 992 refuted. 0 times theorem prover too weak. 1986 trivial. 0 not checked. [2022-03-20 08:23:11,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583517009] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:23:11,921 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:23:11,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 66, 66] total 102 [2022-03-20 08:23:11,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534160341] [2022-03-20 08:23:11,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:23:11,922 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2022-03-20 08:23:11,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:23:11,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2022-03-20 08:23:11,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2283, Invalid=8019, Unknown=0, NotChecked=0, Total=10302 [2022-03-20 08:23:11,923 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) [2022-03-20 08:23:13,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:23:13,984 INFO L93 Difference]: Finished difference Result 582 states and 688 transitions. [2022-03-20 08:23:13,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-03-20 08:23:13,984 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 [2022-03-20 08:23:13,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:23:13,986 INFO L225 Difference]: With dead ends: 582 [2022-03-20 08:23:13,986 INFO L226 Difference]: Without dead ends: 441 [2022-03-20 08:23:13,988 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 [2022-03-20 08:23:13,988 INFO L913 BasicCegarLoop]: 76 mSDtfsCounter, 668 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 2076 mSolverCounterSat, 456 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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 [2022-03-20 08:23:13,988 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] [2022-03-20 08:23:13,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2022-03-20 08:23:14,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 313. [2022-03-20 08:23:14,006 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) [2022-03-20 08:23:14,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 323 transitions. [2022-03-20 08:23:14,007 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 323 transitions. Word has length 336 [2022-03-20 08:23:14,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:23:14,007 INFO L478 AbstractCegarLoop]: Abstraction has 313 states and 323 transitions. [2022-03-20 08:23:14,007 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) [2022-03-20 08:23:14,007 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 323 transitions. [2022-03-20 08:23:14,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2022-03-20 08:23:14,009 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:23:14,009 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] [2022-03-20 08:23:14,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-03-20 08:23:14,216 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 [2022-03-20 08:23:14,216 INFO L403 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:23:14,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:23:14,217 INFO L85 PathProgramCache]: Analyzing trace with hash -373333003, now seen corresponding path program 38 times [2022-03-20 08:23:14,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:23:14,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595677849] [2022-03-20 08:23:14,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:23:14,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:23:14,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:15,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:23:15,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:15,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-03-20 08:23:15,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:15,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-03-20 08:23:15,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:15,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-03-20 08:23:15,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:15,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-03-20 08:23:15,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:15,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-03-20 08:23:15,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:15,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-03-20 08:23:15,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:15,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-03-20 08:23:15,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:15,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-03-20 08:23:15,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:15,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-03-20 08:23:15,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:15,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-03-20 08:23:15,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:15,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-03-20 08:23:15,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:15,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-03-20 08:23:15,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:15,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-03-20 08:23:15,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:15,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-03-20 08:23:15,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:15,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-03-20 08:23:15,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:15,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-03-20 08:23:15,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:15,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-03-20 08:23:15,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:15,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-03-20 08:23:15,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:15,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-03-20 08:23:15,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:15,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-03-20 08:23:15,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:15,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-03-20 08:23:15,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:15,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-03-20 08:23:15,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:15,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-03-20 08:23:15,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:15,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-03-20 08:23:15,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:15,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-03-20 08:23:15,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:15,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-03-20 08:23:15,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:15,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-03-20 08:23:15,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:15,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-03-20 08:23:15,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:15,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-03-20 08:23:15,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:15,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-03-20 08:23:15,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:15,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-03-20 08:23:15,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:15,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-03-20 08:23:15,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:15,374 INFO L134 CoverageAnalysis]: Checked inductivity of 5152 backedges. 2019 proven. 1149 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2022-03-20 08:23:15,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:23:15,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595677849] [2022-03-20 08:23:15,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595677849] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:23:15,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086851586] [2022-03-20 08:23:15,374 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 08:23:15,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:23:15,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:23:15,376 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) [2022-03-20 08:23:15,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-03-20 08:23:15,477 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 08:23:15,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 08:23:15,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 932 conjuncts, 68 conjunts are in the unsatisfiable core [2022-03-20 08:23:15,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:23:16,868 INFO L134 CoverageAnalysis]: Checked inductivity of 5152 backedges. 1120 proven. 2048 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2022-03-20 08:23:16,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:23:17,309 INFO L134 CoverageAnalysis]: Checked inductivity of 5152 backedges. 1120 proven. 2048 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2022-03-20 08:23:17,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086851586] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:23:17,309 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:23:17,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 37, 37] total 104 [2022-03-20 08:23:17,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260694302] [2022-03-20 08:23:17,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:23:17,310 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2022-03-20 08:23:17,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:23:17,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2022-03-20 08:23:17,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1757, Invalid=8955, Unknown=0, NotChecked=0, Total=10712 [2022-03-20 08:23:17,312 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) [2022-03-20 08:23:21,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:23:21,152 INFO L93 Difference]: Finished difference Result 595 states and 705 transitions. [2022-03-20 08:23:21,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2022-03-20 08:23:21,153 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 [2022-03-20 08:23:21,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:23:21,154 INFO L225 Difference]: With dead ends: 595 [2022-03-20 08:23:21,154 INFO L226 Difference]: Without dead ends: 456 [2022-03-20 08:23:21,157 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 [2022-03-20 08:23:21,158 INFO L913 BasicCegarLoop]: 108 mSDtfsCounter, 1109 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 3721 mSolverCounterSat, 948 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s 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 [2022-03-20 08:23:21,158 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] [2022-03-20 08:23:21,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2022-03-20 08:23:21,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 323. [2022-03-20 08:23:21,176 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) [2022-03-20 08:23:21,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 333 transitions. [2022-03-20 08:23:21,177 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 333 transitions. Word has length 338 [2022-03-20 08:23:21,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:23:21,177 INFO L478 AbstractCegarLoop]: Abstraction has 323 states and 333 transitions. [2022-03-20 08:23:21,177 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) [2022-03-20 08:23:21,177 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 333 transitions. [2022-03-20 08:23:21,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2022-03-20 08:23:21,179 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:23:21,179 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] [2022-03-20 08:23:21,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-03-20 08:23:21,392 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 [2022-03-20 08:23:21,392 INFO L403 AbstractCegarLoop]: === Iteration 42 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:23:21,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:23:21,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1595795116, now seen corresponding path program 39 times [2022-03-20 08:23:21,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:23:21,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123041620] [2022-03-20 08:23:21,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:23:21,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:23:21,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:22,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:23:22,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:22,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-03-20 08:23:22,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:22,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-03-20 08:23:22,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:22,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-03-20 08:23:22,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:22,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-03-20 08:23:22,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:22,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-03-20 08:23:22,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:22,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-03-20 08:23:22,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:22,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-03-20 08:23:22,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:22,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-03-20 08:23:22,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:22,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-03-20 08:23:22,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:22,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-03-20 08:23:22,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:22,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-03-20 08:23:22,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:22,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-03-20 08:23:22,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:22,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-03-20 08:23:22,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:22,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-03-20 08:23:22,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:22,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-03-20 08:23:22,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:22,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-03-20 08:23:22,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:22,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-03-20 08:23:22,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:22,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-03-20 08:23:22,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:22,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-03-20 08:23:22,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:22,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-03-20 08:23:22,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:22,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-03-20 08:23:22,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:22,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-03-20 08:23:22,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:22,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-03-20 08:23:22,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:22,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-03-20 08:23:22,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:22,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-03-20 08:23:22,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:22,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-03-20 08:23:22,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:22,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-03-20 08:23:22,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:22,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-03-20 08:23:22,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:22,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-03-20 08:23:22,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:22,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-03-20 08:23:22,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:22,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-03-20 08:23:22,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:22,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-03-20 08:23:22,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:22,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-03-20 08:23:22,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:22,594 INFO L134 CoverageAnalysis]: Checked inductivity of 5478 backedges. 2148 proven. 1218 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2022-03-20 08:23:22,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:23:22,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123041620] [2022-03-20 08:23:22,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123041620] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:23:22,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626290686] [2022-03-20 08:23:22,595 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-20 08:23:22,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:23:22,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:23:22,596 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) [2022-03-20 08:23:22,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-03-20 08:23:22,738 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2022-03-20 08:23:22,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 08:23:22,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 959 conjuncts, 70 conjunts are in the unsatisfiable core [2022-03-20 08:23:22,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:23:24,213 INFO L134 CoverageAnalysis]: Checked inductivity of 5478 backedges. 1188 proven. 2178 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2022-03-20 08:23:24,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:23:24,736 INFO L134 CoverageAnalysis]: Checked inductivity of 5478 backedges. 1188 proven. 2178 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2022-03-20 08:23:24,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626290686] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:23:24,736 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:23:24,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 38, 38] total 107 [2022-03-20 08:23:24,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329745441] [2022-03-20 08:23:24,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:23:24,737 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2022-03-20 08:23:24,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:23:24,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2022-03-20 08:23:24,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1861, Invalid=9481, Unknown=0, NotChecked=0, Total=11342 [2022-03-20 08:23:24,745 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) [2022-03-20 08:23:28,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:23:28,886 INFO L93 Difference]: Finished difference Result 613 states and 726 transitions. [2022-03-20 08:23:28,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2022-03-20 08:23:28,887 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 [2022-03-20 08:23:28,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:23:28,888 INFO L225 Difference]: With dead ends: 613 [2022-03-20 08:23:28,888 INFO L226 Difference]: Without dead ends: 470 [2022-03-20 08:23:28,892 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 [2022-03-20 08:23:28,893 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 [2022-03-20 08:23:28,893 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] [2022-03-20 08:23:28,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2022-03-20 08:23:28,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 333. [2022-03-20 08:23:28,912 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) [2022-03-20 08:23:28,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 343 transitions. [2022-03-20 08:23:28,912 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 343 transitions. Word has length 348 [2022-03-20 08:23:28,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:23:28,913 INFO L478 AbstractCegarLoop]: Abstraction has 333 states and 343 transitions. [2022-03-20 08:23:28,913 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) [2022-03-20 08:23:28,913 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 343 transitions. [2022-03-20 08:23:28,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2022-03-20 08:23:28,914 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:23:28,914 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] [2022-03-20 08:23:28,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-03-20 08:23:29,131 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 [2022-03-20 08:23:29,131 INFO L403 AbstractCegarLoop]: === Iteration 43 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:23:29,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:23:29,132 INFO L85 PathProgramCache]: Analyzing trace with hash -2025393501, now seen corresponding path program 40 times [2022-03-20 08:23:29,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:23:29,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42293835] [2022-03-20 08:23:29,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:23:29,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:23:29,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:30,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:23:30,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:30,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-03-20 08:23:30,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:30,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-03-20 08:23:30,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:30,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-03-20 08:23:30,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:30,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-03-20 08:23:30,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:30,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-03-20 08:23:30,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:30,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-03-20 08:23:30,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:30,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-03-20 08:23:30,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:30,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-03-20 08:23:30,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:30,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-03-20 08:23:30,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:30,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-03-20 08:23:30,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:30,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-03-20 08:23:30,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:30,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-03-20 08:23:30,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:30,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-03-20 08:23:30,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:30,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-03-20 08:23:30,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:30,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-03-20 08:23:30,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:30,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-03-20 08:23:30,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:30,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-03-20 08:23:30,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:30,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-03-20 08:23:30,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:30,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-03-20 08:23:30,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:30,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-03-20 08:23:30,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:30,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-03-20 08:23:30,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:30,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-03-20 08:23:30,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:30,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-03-20 08:23:30,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:30,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-03-20 08:23:30,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:30,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-03-20 08:23:30,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:30,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-03-20 08:23:30,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:30,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-03-20 08:23:30,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:30,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-03-20 08:23:30,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:30,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-03-20 08:23:30,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:30,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-03-20 08:23:30,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:30,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-03-20 08:23:30,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:30,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-03-20 08:23:30,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:30,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-03-20 08:23:30,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:30,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-03-20 08:23:30,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:30,366 INFO L134 CoverageAnalysis]: Checked inductivity of 5814 backedges. 2281 proven. 1289 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2022-03-20 08:23:30,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:23:30,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42293835] [2022-03-20 08:23:30,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42293835] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:23:30,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166204327] [2022-03-20 08:23:30,367 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-20 08:23:30,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:23:30,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:23:30,368 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) [2022-03-20 08:23:30,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-03-20 08:23:30,498 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-20 08:23:30,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 08:23:30,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 986 conjuncts, 72 conjunts are in the unsatisfiable core [2022-03-20 08:23:30,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:23:32,050 INFO L134 CoverageAnalysis]: Checked inductivity of 5814 backedges. 1258 proven. 2312 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2022-03-20 08:23:32,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:23:32,526 INFO L134 CoverageAnalysis]: Checked inductivity of 5814 backedges. 1258 proven. 2312 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2022-03-20 08:23:32,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166204327] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:23:32,527 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:23:32,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 39, 39] total 110 [2022-03-20 08:23:32,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260192361] [2022-03-20 08:23:32,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:23:32,528 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 110 states [2022-03-20 08:23:32,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:23:32,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2022-03-20 08:23:32,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1968, Invalid=10022, Unknown=0, NotChecked=0, Total=11990 [2022-03-20 08:23:32,529 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) [2022-03-20 08:23:36,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:23:36,800 INFO L93 Difference]: Finished difference Result 631 states and 747 transitions. [2022-03-20 08:23:36,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2022-03-20 08:23:36,800 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 [2022-03-20 08:23:36,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:23:36,802 INFO L225 Difference]: With dead ends: 631 [2022-03-20 08:23:36,802 INFO L226 Difference]: Without dead ends: 484 [2022-03-20 08:23:36,805 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1035 GetRequests, 785 SyntacticMatches, 1 SemanticMatches, 249 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21724 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=10511, Invalid=52239, Unknown=0, NotChecked=0, Total=62750 [2022-03-20 08:23:36,806 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, 1.5s IncrementalHoareTripleChecker+Time [2022-03-20 08:23:36,806 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1100 Valid, 196 Invalid, 5021 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [967 Valid, 4054 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-20 08:23:36,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2022-03-20 08:23:36,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 343. [2022-03-20 08:23:36,826 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) [2022-03-20 08:23:36,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 353 transitions. [2022-03-20 08:23:36,827 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 353 transitions. Word has length 358 [2022-03-20 08:23:36,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:23:36,828 INFO L478 AbstractCegarLoop]: Abstraction has 343 states and 353 transitions. [2022-03-20 08:23:36,829 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) [2022-03-20 08:23:36,829 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 353 transitions. [2022-03-20 08:23:36,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2022-03-20 08:23:36,830 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:23:36,830 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] [2022-03-20 08:23:36,851 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-03-20 08:23:37,043 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 [2022-03-20 08:23:37,043 INFO L403 AbstractCegarLoop]: === Iteration 44 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:23:37,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:23:37,044 INFO L85 PathProgramCache]: Analyzing trace with hash 372111322, now seen corresponding path program 41 times [2022-03-20 08:23:37,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:23:37,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102929737] [2022-03-20 08:23:37,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:23:37,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:23:37,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:38,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:23:38,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:38,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-03-20 08:23:38,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:38,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-03-20 08:23:38,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:38,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-03-20 08:23:38,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:38,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-03-20 08:23:38,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:38,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-03-20 08:23:38,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:38,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-03-20 08:23:38,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:38,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-03-20 08:23:38,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:38,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-03-20 08:23:38,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:38,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-03-20 08:23:38,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:38,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-03-20 08:23:38,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:38,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-03-20 08:23:38,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:38,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-03-20 08:23:38,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:38,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-03-20 08:23:38,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:38,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-03-20 08:23:38,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:38,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-03-20 08:23:38,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:38,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-03-20 08:23:38,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:38,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-03-20 08:23:38,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:38,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-03-20 08:23:38,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:38,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-03-20 08:23:38,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:38,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-03-20 08:23:38,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:38,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-03-20 08:23:38,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:38,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-03-20 08:23:38,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:38,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-03-20 08:23:38,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:38,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-03-20 08:23:38,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:38,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-03-20 08:23:38,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:38,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-03-20 08:23:38,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:38,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-03-20 08:23:38,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:38,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-03-20 08:23:38,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:38,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-03-20 08:23:38,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:38,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-03-20 08:23:38,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:38,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-03-20 08:23:38,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:38,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-03-20 08:23:38,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:38,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-03-20 08:23:38,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:38,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-03-20 08:23:38,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:38,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-03-20 08:23:38,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:38,363 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 2418 proven. 1362 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2022-03-20 08:23:38,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:23:38,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102929737] [2022-03-20 08:23:38,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102929737] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:23:38,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114003195] [2022-03-20 08:23:38,363 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-20 08:23:38,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:23:38,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:23:38,364 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) [2022-03-20 08:23:38,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-03-20 08:23:38,520 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2022-03-20 08:23:38,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 08:23:38,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 1013 conjuncts, 74 conjunts are in the unsatisfiable core [2022-03-20 08:23:38,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:23:40,599 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 2520 proven. 1260 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2022-03-20 08:23:40,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:23:41,092 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 2520 proven. 1260 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2022-03-20 08:23:41,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114003195] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:23:41,093 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:23:41,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 74, 74] total 113 [2022-03-20 08:23:41,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296110688] [2022-03-20 08:23:41,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:23:41,094 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 113 states [2022-03-20 08:23:41,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:23:41,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2022-03-20 08:23:41,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2817, Invalid=9839, Unknown=0, NotChecked=0, Total=12656 [2022-03-20 08:23:41,095 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) [2022-03-20 08:23:43,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:23:43,413 INFO L93 Difference]: Finished difference Result 640 states and 758 transitions. [2022-03-20 08:23:43,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-03-20 08:23:43,413 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 [2022-03-20 08:23:43,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:23:43,415 INFO L225 Difference]: With dead ends: 640 [2022-03-20 08:23:43,415 INFO L226 Difference]: Without dead ends: 489 [2022-03-20 08:23:43,417 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 989 GetRequests, 806 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9270 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=7589, Invalid=26451, Unknown=0, NotChecked=0, Total=34040 [2022-03-20 08:23:43,417 INFO L913 BasicCegarLoop]: 84 mSDtfsCounter, 891 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 1758 mSolverCounterSat, 584 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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 [2022-03-20 08:23:43,417 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] [2022-03-20 08:23:43,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2022-03-20 08:23:43,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 345. [2022-03-20 08:23:43,437 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) [2022-03-20 08:23:43,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 355 transitions. [2022-03-20 08:23:43,438 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 355 transitions. Word has length 368 [2022-03-20 08:23:43,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:23:43,438 INFO L478 AbstractCegarLoop]: Abstraction has 345 states and 355 transitions. [2022-03-20 08:23:43,438 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) [2022-03-20 08:23:43,438 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 355 transitions. [2022-03-20 08:23:43,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2022-03-20 08:23:43,439 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:23:43,440 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] [2022-03-20 08:23:43,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-03-20 08:23:43,655 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 [2022-03-20 08:23:43,655 INFO L403 AbstractCegarLoop]: === Iteration 45 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:23:43,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:23:43,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1027431235, now seen corresponding path program 42 times [2022-03-20 08:23:43,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:23:43,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226526273] [2022-03-20 08:23:43,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:23:43,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:23:43,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:44,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:23:44,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:44,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-03-20 08:23:44,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:44,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-03-20 08:23:44,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:44,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-03-20 08:23:44,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:44,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-03-20 08:23:44,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:44,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-03-20 08:23:44,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:44,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-03-20 08:23:44,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:44,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-03-20 08:23:44,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:44,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-03-20 08:23:44,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:44,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-03-20 08:23:44,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:44,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-03-20 08:23:44,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:44,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-03-20 08:23:44,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:44,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-03-20 08:23:44,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:44,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-03-20 08:23:44,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:44,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-03-20 08:23:44,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:44,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-03-20 08:23:44,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:44,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-03-20 08:23:44,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:44,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-03-20 08:23:44,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:44,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-03-20 08:23:44,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:44,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-03-20 08:23:44,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:44,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-03-20 08:23:44,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:44,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-03-20 08:23:44,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:44,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-03-20 08:23:44,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:44,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-03-20 08:23:44,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:44,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-03-20 08:23:44,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:44,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-03-20 08:23:44,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:44,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-03-20 08:23:44,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:44,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-03-20 08:23:44,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:44,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-03-20 08:23:44,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:44,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-03-20 08:23:44,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:44,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-03-20 08:23:44,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:44,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-03-20 08:23:44,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:44,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-03-20 08:23:44,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:44,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-03-20 08:23:44,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:44,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-03-20 08:23:44,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:44,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-03-20 08:23:44,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:44,274 INFO L134 CoverageAnalysis]: Checked inductivity of 6232 backedges. 1330 proven. 2522 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2022-03-20 08:23:44,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:23:44,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226526273] [2022-03-20 08:23:44,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226526273] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:23:44,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316381863] [2022-03-20 08:23:44,274 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-20 08:23:44,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:23:44,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:23:44,275 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) [2022-03-20 08:23:44,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-03-20 08:23:44,440 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2022-03-20 08:23:44,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 08:23:44,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 1023 conjuncts, 75 conjunts are in the unsatisfiable core [2022-03-20 08:23:44,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:23:44,892 INFO L134 CoverageAnalysis]: Checked inductivity of 6232 backedges. 1402 proven. 2450 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2022-03-20 08:23:44,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:23:45,362 INFO L134 CoverageAnalysis]: Checked inductivity of 6232 backedges. 1402 proven. 2450 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2022-03-20 08:23:45,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316381863] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:23:45,362 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:23:45,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 41, 41] total 46 [2022-03-20 08:23:45,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241547371] [2022-03-20 08:23:45,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:23:45,363 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-03-20 08:23:45,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:23:45,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-03-20 08:23:45,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=796, Invalid=1274, Unknown=0, NotChecked=0, Total=2070 [2022-03-20 08:23:45,364 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) [2022-03-20 08:23:46,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:23:46,268 INFO L93 Difference]: Finished difference Result 364 states and 376 transitions. [2022-03-20 08:23:46,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-20 08:23:46,268 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 [2022-03-20 08:23:46,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:23:46,270 INFO L225 Difference]: With dead ends: 364 [2022-03-20 08:23:46,270 INFO L226 Difference]: Without dead ends: 362 [2022-03-20 08:23:46,270 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 [2022-03-20 08:23:46,271 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 [2022-03-20 08:23:46,271 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] [2022-03-20 08:23:46,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2022-03-20 08:23:46,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 357. [2022-03-20 08:23:46,291 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) [2022-03-20 08:23:46,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 368 transitions. [2022-03-20 08:23:46,291 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 368 transitions. Word has length 370 [2022-03-20 08:23:46,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:23:46,292 INFO L478 AbstractCegarLoop]: Abstraction has 357 states and 368 transitions. [2022-03-20 08:23:46,292 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) [2022-03-20 08:23:46,292 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 368 transitions. [2022-03-20 08:23:46,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2022-03-20 08:23:46,293 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:23:46,294 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] [2022-03-20 08:23:46,318 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-03-20 08:23:46,511 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 [2022-03-20 08:23:46,512 INFO L403 AbstractCegarLoop]: === Iteration 46 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:23:46,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:23:46,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1645128731, now seen corresponding path program 43 times [2022-03-20 08:23:46,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:23:46,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608682151] [2022-03-20 08:23:46,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:23:46,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:23:46,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:47,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:23:47,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:47,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-03-20 08:23:47,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:47,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-03-20 08:23:47,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:47,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-03-20 08:23:47,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:47,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-03-20 08:23:47,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:47,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-03-20 08:23:47,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:47,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-03-20 08:23:47,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:47,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-03-20 08:23:47,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:47,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-03-20 08:23:47,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:47,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-03-20 08:23:47,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:47,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-03-20 08:23:47,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:47,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-03-20 08:23:47,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:47,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-03-20 08:23:47,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:47,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-03-20 08:23:47,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:47,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-03-20 08:23:47,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:47,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-03-20 08:23:47,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:47,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-03-20 08:23:47,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:47,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-03-20 08:23:47,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:47,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-03-20 08:23:47,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:47,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-03-20 08:23:47,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:47,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-03-20 08:23:47,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:47,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-03-20 08:23:47,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:47,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-03-20 08:23:47,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:47,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-03-20 08:23:47,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:47,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-03-20 08:23:47,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:47,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-03-20 08:23:47,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:47,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-03-20 08:23:47,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:47,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-03-20 08:23:47,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:47,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-03-20 08:23:47,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:47,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-03-20 08:23:47,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:47,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-03-20 08:23:47,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:47,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-03-20 08:23:47,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:47,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-03-20 08:23:47,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:47,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-03-20 08:23:47,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:47,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-03-20 08:23:47,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:47,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-03-20 08:23:47,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:47,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-03-20 08:23:47,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:47,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-03-20 08:23:47,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:47,924 INFO L134 CoverageAnalysis]: Checked inductivity of 6808 backedges. 2704 proven. 1440 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2022-03-20 08:23:47,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:23:47,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608682151] [2022-03-20 08:23:47,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608682151] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:23:47,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530786298] [2022-03-20 08:23:47,924 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-20 08:23:47,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:23:47,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:23:47,926 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) [2022-03-20 08:23:47,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-03-20 08:23:48,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:48,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 1057 conjuncts, 76 conjunts are in the unsatisfiable core [2022-03-20 08:23:48,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:23:50,166 INFO L134 CoverageAnalysis]: Checked inductivity of 6808 backedges. 2952 proven. 1332 refuted. 0 times theorem prover too weak. 2524 trivial. 0 not checked. [2022-03-20 08:23:50,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:23:50,682 INFO L134 CoverageAnalysis]: Checked inductivity of 6808 backedges. 2810 proven. 1332 refuted. 0 times theorem prover too weak. 2666 trivial. 0 not checked. [2022-03-20 08:23:50,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1530786298] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:23:50,682 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:23:50,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 76, 76] total 117 [2022-03-20 08:23:50,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443910023] [2022-03-20 08:23:50,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:23:50,683 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 117 states [2022-03-20 08:23:50,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:23:50,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2022-03-20 08:23:50,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3008, Invalid=10564, Unknown=0, NotChecked=0, Total=13572 [2022-03-20 08:23:50,685 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) [2022-03-20 08:23:53,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:23:53,342 INFO L93 Difference]: Finished difference Result 668 states and 790 transitions. [2022-03-20 08:23:53,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-03-20 08:23:53,342 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 [2022-03-20 08:23:53,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:23:53,344 INFO L225 Difference]: With dead ends: 668 [2022-03-20 08:23:53,344 INFO L226 Difference]: Without dead ends: 507 [2022-03-20 08:23:53,346 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 [2022-03-20 08:23:53,346 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, 1.0s IncrementalHoareTripleChecker+Time [2022-03-20 08:23:53,346 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [710 Valid, 148 Invalid, 3038 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [462 Valid, 2576 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-20 08:23:53,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2022-03-20 08:23:53,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 359. [2022-03-20 08:23:53,368 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) [2022-03-20 08:23:53,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 370 transitions. [2022-03-20 08:23:53,369 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 370 transitions. Word has length 386 [2022-03-20 08:23:53,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:23:53,369 INFO L478 AbstractCegarLoop]: Abstraction has 359 states and 370 transitions. [2022-03-20 08:23:53,370 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) [2022-03-20 08:23:53,370 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 370 transitions. [2022-03-20 08:23:53,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2022-03-20 08:23:53,371 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:23:53,372 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] [2022-03-20 08:23:53,396 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2022-03-20 08:23:53,589 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 [2022-03-20 08:23:53,590 INFO L403 AbstractCegarLoop]: === Iteration 47 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:23:53,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:23:53,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1522029048, now seen corresponding path program 44 times [2022-03-20 08:23:53,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:23:53,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879687888] [2022-03-20 08:23:53,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:23:53,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:23:53,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:55,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:23:55,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:55,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-03-20 08:23:55,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:55,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-03-20 08:23:55,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:55,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-03-20 08:23:55,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:55,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-03-20 08:23:55,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:55,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-03-20 08:23:55,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:55,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-03-20 08:23:55,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:55,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-03-20 08:23:55,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:55,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-03-20 08:23:55,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:55,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-03-20 08:23:55,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:55,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-03-20 08:23:55,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:55,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-03-20 08:23:55,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:55,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-03-20 08:23:55,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:55,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-03-20 08:23:55,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:55,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-03-20 08:23:55,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:55,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-03-20 08:23:55,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:55,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-03-20 08:23:55,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:55,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-03-20 08:23:55,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:55,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-03-20 08:23:55,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:55,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-03-20 08:23:55,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:55,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-03-20 08:23:55,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:55,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-03-20 08:23:55,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:55,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-03-20 08:23:55,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:55,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-03-20 08:23:55,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:55,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-03-20 08:23:55,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:55,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-03-20 08:23:55,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:55,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-03-20 08:23:55,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:55,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-03-20 08:23:55,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:55,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-03-20 08:23:55,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:55,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-03-20 08:23:55,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:55,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-03-20 08:23:55,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:55,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-03-20 08:23:55,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:55,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-03-20 08:23:55,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:55,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-03-20 08:23:55,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:55,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-03-20 08:23:55,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:55,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-03-20 08:23:55,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:55,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-03-20 08:23:55,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:55,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-03-20 08:23:55,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:23:55,068 INFO L134 CoverageAnalysis]: Checked inductivity of 6882 backedges. 2704 proven. 1514 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2022-03-20 08:23:55,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:23:55,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879687888] [2022-03-20 08:23:55,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879687888] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:23:55,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450915918] [2022-03-20 08:23:55,069 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 08:23:55,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:23:55,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:23:55,070 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) [2022-03-20 08:23:55,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-03-20 08:23:55,192 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 08:23:55,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 08:23:55,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 1067 conjuncts, 78 conjunts are in the unsatisfiable core [2022-03-20 08:23:55,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:23:56,954 INFO L134 CoverageAnalysis]: Checked inductivity of 6882 backedges. 1480 proven. 2738 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2022-03-20 08:23:56,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:23:57,470 INFO L134 CoverageAnalysis]: Checked inductivity of 6882 backedges. 1480 proven. 2738 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2022-03-20 08:23:57,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [450915918] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:23:57,470 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:23:57,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 42, 42] total 119 [2022-03-20 08:23:57,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113424118] [2022-03-20 08:23:57,471 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:23:57,471 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 119 states [2022-03-20 08:23:57,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:23:57,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2022-03-20 08:23:57,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2307, Invalid=11735, Unknown=0, NotChecked=0, Total=14042 [2022-03-20 08:23:57,473 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) [2022-03-20 08:24:02,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:24:02,384 INFO L93 Difference]: Finished difference Result 681 states and 807 transitions. [2022-03-20 08:24:02,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2022-03-20 08:24:02,385 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 [2022-03-20 08:24:02,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:24:02,386 INFO L225 Difference]: With dead ends: 681 [2022-03-20 08:24:02,386 INFO L226 Difference]: Without dead ends: 522 [2022-03-20 08:24:02,392 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 [2022-03-20 08:24:02,395 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 [2022-03-20 08:24:02,395 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] [2022-03-20 08:24:02,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2022-03-20 08:24:02,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 369. [2022-03-20 08:24:02,447 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) [2022-03-20 08:24:02,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 380 transitions. [2022-03-20 08:24:02,447 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 380 transitions. Word has length 388 [2022-03-20 08:24:02,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:24:02,448 INFO L478 AbstractCegarLoop]: Abstraction has 369 states and 380 transitions. [2022-03-20 08:24:02,448 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) [2022-03-20 08:24:02,448 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 380 transitions. [2022-03-20 08:24:02,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2022-03-20 08:24:02,450 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:24:02,450 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] [2022-03-20 08:24:02,468 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-03-20 08:24:02,663 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 [2022-03-20 08:24:02,663 INFO L403 AbstractCegarLoop]: === Iteration 48 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:24:02,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:24:02,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1213907201, now seen corresponding path program 45 times [2022-03-20 08:24:02,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:24:02,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611824560] [2022-03-20 08:24:02,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:24:02,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:24:02,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:04,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:24:04,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:04,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-03-20 08:24:04,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:04,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-03-20 08:24:04,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:04,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-03-20 08:24:04,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:04,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-03-20 08:24:04,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:04,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-03-20 08:24:04,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:04,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-03-20 08:24:04,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:04,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-03-20 08:24:04,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:04,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-03-20 08:24:04,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:04,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-03-20 08:24:04,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:04,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-03-20 08:24:04,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:04,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-03-20 08:24:04,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:04,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-03-20 08:24:04,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:04,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-03-20 08:24:04,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:04,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-03-20 08:24:04,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:04,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-03-20 08:24:04,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:04,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-03-20 08:24:04,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:04,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-03-20 08:24:04,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:04,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-03-20 08:24:04,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:04,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-03-20 08:24:04,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:04,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-03-20 08:24:04,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:04,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-03-20 08:24:04,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:04,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-03-20 08:24:04,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:04,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-03-20 08:24:04,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:04,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-03-20 08:24:04,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:04,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-03-20 08:24:04,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:04,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-03-20 08:24:04,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:04,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-03-20 08:24:04,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:04,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-03-20 08:24:04,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:04,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-03-20 08:24:04,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:04,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-03-20 08:24:04,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:04,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-03-20 08:24:04,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:04,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-03-20 08:24:04,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:04,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-03-20 08:24:04,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:04,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-03-20 08:24:04,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:04,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-03-20 08:24:04,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:04,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-03-20 08:24:04,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:04,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-03-20 08:24:04,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:04,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-03-20 08:24:04,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:04,188 INFO L134 CoverageAnalysis]: Checked inductivity of 7258 backedges. 2853 proven. 1593 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2022-03-20 08:24:04,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:24:04,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611824560] [2022-03-20 08:24:04,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611824560] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:24:04,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109634611] [2022-03-20 08:24:04,189 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-20 08:24:04,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:24:04,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:24:04,190 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) [2022-03-20 08:24:04,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-03-20 08:24:04,358 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 39 check-sat command(s) [2022-03-20 08:24:04,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 08:24:04,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 1094 conjuncts, 80 conjunts are in the unsatisfiable core [2022-03-20 08:24:04,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:24:06,171 INFO L134 CoverageAnalysis]: Checked inductivity of 7258 backedges. 1558 proven. 2888 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2022-03-20 08:24:06,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:24:06,685 INFO L134 CoverageAnalysis]: Checked inductivity of 7258 backedges. 1558 proven. 2888 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2022-03-20 08:24:06,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109634611] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:24:06,685 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:24:06,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 43, 43] total 122 [2022-03-20 08:24:06,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734162608] [2022-03-20 08:24:06,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:24:06,686 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 122 states [2022-03-20 08:24:06,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:24:06,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2022-03-20 08:24:06,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2426, Invalid=12336, Unknown=0, NotChecked=0, Total=14762 [2022-03-20 08:24:06,687 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) [2022-03-20 08:24:11,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:24:11,779 INFO L93 Difference]: Finished difference Result 699 states and 828 transitions. [2022-03-20 08:24:11,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2022-03-20 08:24:11,780 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 [2022-03-20 08:24:11,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:24:11,781 INFO L225 Difference]: With dead ends: 699 [2022-03-20 08:24:11,781 INFO L226 Difference]: Without dead ends: 536 [2022-03-20 08:24:11,785 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1151 GetRequests, 873 SyntacticMatches, 1 SemanticMatches, 277 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27016 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=12959, Invalid=64603, Unknown=0, NotChecked=0, Total=77562 [2022-03-20 08:24:11,785 INFO L913 BasicCegarLoop]: 126 mSDtfsCounter, 1057 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 4994 mSolverCounterSat, 957 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s 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, 1.7s IncrementalHoareTripleChecker+Time [2022-03-20 08:24:11,785 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1058 Valid, 213 Invalid, 5951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [957 Valid, 4994 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-03-20 08:24:11,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2022-03-20 08:24:11,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 379. [2022-03-20 08:24:11,809 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) [2022-03-20 08:24:11,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 390 transitions. [2022-03-20 08:24:11,809 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 390 transitions. Word has length 398 [2022-03-20 08:24:11,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:24:11,810 INFO L478 AbstractCegarLoop]: Abstraction has 379 states and 390 transitions. [2022-03-20 08:24:11,810 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) [2022-03-20 08:24:11,810 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 390 transitions. [2022-03-20 08:24:11,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2022-03-20 08:24:11,812 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:24:11,812 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] [2022-03-20 08:24:11,835 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2022-03-20 08:24:12,026 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 [2022-03-20 08:24:12,026 INFO L403 AbstractCegarLoop]: === Iteration 49 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:24:12,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:24:12,027 INFO L85 PathProgramCache]: Analyzing trace with hash 320244022, now seen corresponding path program 46 times [2022-03-20 08:24:12,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:24:12,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761955357] [2022-03-20 08:24:12,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:24:12,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:24:12,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:13,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:24:13,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:13,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-03-20 08:24:13,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:13,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-03-20 08:24:13,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:13,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-03-20 08:24:13,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:13,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-03-20 08:24:13,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:13,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-03-20 08:24:13,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:13,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-03-20 08:24:13,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:13,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-03-20 08:24:13,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:13,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-03-20 08:24:13,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:13,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-03-20 08:24:13,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:13,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-03-20 08:24:13,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:13,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-03-20 08:24:13,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:13,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-03-20 08:24:13,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:13,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-03-20 08:24:13,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:13,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-03-20 08:24:13,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:13,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-03-20 08:24:13,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:13,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-03-20 08:24:13,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:13,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-03-20 08:24:13,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:13,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-03-20 08:24:13,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:13,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-03-20 08:24:13,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:13,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-03-20 08:24:13,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:13,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-03-20 08:24:13,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:13,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-03-20 08:24:13,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:13,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-03-20 08:24:13,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:13,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-03-20 08:24:13,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:13,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-03-20 08:24:13,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:13,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-03-20 08:24:13,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:13,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-03-20 08:24:13,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:13,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-03-20 08:24:13,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:13,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-03-20 08:24:13,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:13,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-03-20 08:24:13,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:13,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-03-20 08:24:13,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:13,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-03-20 08:24:13,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:13,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-03-20 08:24:13,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:13,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-03-20 08:24:13,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:13,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-03-20 08:24:13,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:13,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-03-20 08:24:13,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:13,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-03-20 08:24:13,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:13,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-03-20 08:24:13,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:13,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-03-20 08:24:13,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:13,652 INFO L134 CoverageAnalysis]: Checked inductivity of 7644 backedges. 3006 proven. 1674 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2022-03-20 08:24:13,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:24:13,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761955357] [2022-03-20 08:24:13,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761955357] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:24:13,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928053555] [2022-03-20 08:24:13,652 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-20 08:24:13,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:24:13,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:24:13,654 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) [2022-03-20 08:24:13,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-03-20 08:24:13,778 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-20 08:24:13,778 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 08:24:13,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 1121 conjuncts, 82 conjunts are in the unsatisfiable core [2022-03-20 08:24:13,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:24:15,774 INFO L134 CoverageAnalysis]: Checked inductivity of 7644 backedges. 1638 proven. 3042 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2022-03-20 08:24:15,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:24:16,302 INFO L134 CoverageAnalysis]: Checked inductivity of 7644 backedges. 1638 proven. 3042 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2022-03-20 08:24:16,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928053555] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:24:16,302 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:24:16,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 44, 44] total 125 [2022-03-20 08:24:16,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261853406] [2022-03-20 08:24:16,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:24:16,303 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 125 states [2022-03-20 08:24:16,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:24:16,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2022-03-20 08:24:16,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2548, Invalid=12952, Unknown=0, NotChecked=0, Total=15500 [2022-03-20 08:24:16,305 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) [2022-03-20 08:24:21,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:24:21,436 INFO L93 Difference]: Finished difference Result 717 states and 849 transitions. [2022-03-20 08:24:21,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2022-03-20 08:24:21,437 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 [2022-03-20 08:24:21,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:24:21,439 INFO L225 Difference]: With dead ends: 717 [2022-03-20 08:24:21,439 INFO L226 Difference]: Without dead ends: 550 [2022-03-20 08:24:21,443 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1180 GetRequests, 895 SyntacticMatches, 1 SemanticMatches, 284 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28429 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=13611, Invalid=67899, Unknown=0, NotChecked=0, Total=81510 [2022-03-20 08:24:21,444 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, 1.6s IncrementalHoareTripleChecker+Time [2022-03-20 08:24:21,444 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1233 Valid, 196 Invalid, 5387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1052 Valid, 4335 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-03-20 08:24:21,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2022-03-20 08:24:21,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 389. [2022-03-20 08:24:21,468 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) [2022-03-20 08:24:21,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 400 transitions. [2022-03-20 08:24:21,469 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 400 transitions. Word has length 408 [2022-03-20 08:24:21,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:24:21,469 INFO L478 AbstractCegarLoop]: Abstraction has 389 states and 400 transitions. [2022-03-20 08:24:21,469 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) [2022-03-20 08:24:21,469 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 400 transitions. [2022-03-20 08:24:21,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2022-03-20 08:24:21,471 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:24:21,471 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] [2022-03-20 08:24:21,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2022-03-20 08:24:21,689 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 [2022-03-20 08:24:21,690 INFO L403 AbstractCegarLoop]: === Iteration 50 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:24:21,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:24:21,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1339227309, now seen corresponding path program 47 times [2022-03-20 08:24:21,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:24:21,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628663811] [2022-03-20 08:24:21,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:24:21,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:24:21,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:23,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:24:23,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:23,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-03-20 08:24:23,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:23,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-03-20 08:24:23,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:23,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-03-20 08:24:23,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:23,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-03-20 08:24:23,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:23,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-03-20 08:24:23,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:23,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-03-20 08:24:23,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:23,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-03-20 08:24:23,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:23,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-03-20 08:24:23,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:23,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-03-20 08:24:23,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:23,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-03-20 08:24:23,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:23,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-03-20 08:24:23,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:23,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-03-20 08:24:23,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:23,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-03-20 08:24:23,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:23,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-03-20 08:24:23,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:23,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-03-20 08:24:23,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:23,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-03-20 08:24:23,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:23,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-03-20 08:24:23,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:23,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-03-20 08:24:23,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:23,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-03-20 08:24:23,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:23,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-03-20 08:24:23,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:23,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-03-20 08:24:23,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:23,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-03-20 08:24:23,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:23,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-03-20 08:24:23,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:23,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-03-20 08:24:23,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:23,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-03-20 08:24:23,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:23,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-03-20 08:24:23,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:23,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-03-20 08:24:23,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:23,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-03-20 08:24:23,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:23,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-03-20 08:24:23,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:23,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-03-20 08:24:23,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:23,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-03-20 08:24:23,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:23,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-03-20 08:24:23,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:23,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-03-20 08:24:23,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:23,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-03-20 08:24:23,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:23,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-03-20 08:24:23,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:23,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-03-20 08:24:23,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:23,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-03-20 08:24:23,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:23,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-03-20 08:24:23,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:23,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-03-20 08:24:23,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:23,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-03-20 08:24:23,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:23,376 INFO L134 CoverageAnalysis]: Checked inductivity of 8040 backedges. 3163 proven. 1757 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2022-03-20 08:24:23,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:24:23,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628663811] [2022-03-20 08:24:23,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628663811] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:24:23,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29207644] [2022-03-20 08:24:23,377 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-20 08:24:23,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:24:23,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:24:23,378 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) [2022-03-20 08:24:23,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-03-20 08:24:23,567 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 41 check-sat command(s) [2022-03-20 08:24:23,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 08:24:23,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 1148 conjuncts, 84 conjunts are in the unsatisfiable core [2022-03-20 08:24:23,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:24:26,106 INFO L134 CoverageAnalysis]: Checked inductivity of 8040 backedges. 3280 proven. 1640 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2022-03-20 08:24:26,106 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:24:26,655 INFO L134 CoverageAnalysis]: Checked inductivity of 8040 backedges. 3280 proven. 1640 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2022-03-20 08:24:26,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29207644] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:24:26,655 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:24:26,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 84, 84] total 128 [2022-03-20 08:24:26,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201020613] [2022-03-20 08:24:26,656 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:24:26,656 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2022-03-20 08:24:26,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:24:26,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2022-03-20 08:24:26,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3617, Invalid=12639, Unknown=0, NotChecked=0, Total=16256 [2022-03-20 08:24:26,658 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) [2022-03-20 08:24:29,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:24:29,669 INFO L93 Difference]: Finished difference Result 726 states and 860 transitions. [2022-03-20 08:24:29,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-03-20 08:24:29,670 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 [2022-03-20 08:24:29,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:24:29,671 INFO L225 Difference]: With dead ends: 726 [2022-03-20 08:24:29,671 INFO L226 Difference]: Without dead ends: 555 [2022-03-20 08:24:29,674 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1124 GetRequests, 916 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11995 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=9769, Invalid=34121, Unknown=0, NotChecked=0, Total=43890 [2022-03-20 08:24:29,674 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 [2022-03-20 08:24:29,674 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] [2022-03-20 08:24:29,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2022-03-20 08:24:29,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 391. [2022-03-20 08:24:29,698 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) [2022-03-20 08:24:29,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 402 transitions. [2022-03-20 08:24:29,699 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 402 transitions. Word has length 418 [2022-03-20 08:24:29,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:24:29,700 INFO L478 AbstractCegarLoop]: Abstraction has 391 states and 402 transitions. [2022-03-20 08:24:29,700 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) [2022-03-20 08:24:29,700 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 402 transitions. [2022-03-20 08:24:29,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2022-03-20 08:24:29,702 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:24:29,702 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] [2022-03-20 08:24:29,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2022-03-20 08:24:29,915 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 [2022-03-20 08:24:29,915 INFO L403 AbstractCegarLoop]: === Iteration 51 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:24:29,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:24:29,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1950348592, now seen corresponding path program 48 times [2022-03-20 08:24:29,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:24:29,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993008258] [2022-03-20 08:24:29,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:24:29,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:24:29,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:30,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:24:30,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:30,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-03-20 08:24:30,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:30,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-03-20 08:24:30,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:30,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-03-20 08:24:30,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:30,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-03-20 08:24:30,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:30,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-03-20 08:24:30,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:30,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-03-20 08:24:30,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:30,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-03-20 08:24:30,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:30,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-03-20 08:24:30,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:30,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-03-20 08:24:30,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:30,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-03-20 08:24:30,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:30,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-03-20 08:24:30,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:30,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-03-20 08:24:30,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:30,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-03-20 08:24:30,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:30,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-03-20 08:24:30,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:30,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-03-20 08:24:30,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:30,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-03-20 08:24:30,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:30,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-03-20 08:24:30,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:30,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-03-20 08:24:30,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:30,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-03-20 08:24:30,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:30,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-03-20 08:24:30,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:30,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-03-20 08:24:30,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:30,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-03-20 08:24:30,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:30,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-03-20 08:24:30,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:30,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-03-20 08:24:30,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:30,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-03-20 08:24:30,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:30,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-03-20 08:24:30,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:30,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-03-20 08:24:30,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:30,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-03-20 08:24:30,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:30,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-03-20 08:24:30,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:30,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-03-20 08:24:30,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:30,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-03-20 08:24:30,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:30,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-03-20 08:24:30,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:30,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-03-20 08:24:30,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:30,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-03-20 08:24:30,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:30,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-03-20 08:24:30,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:30,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-03-20 08:24:30,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:30,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-03-20 08:24:30,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:30,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-03-20 08:24:30,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:30,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-03-20 08:24:30,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:30,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-03-20 08:24:30,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:30,674 INFO L134 CoverageAnalysis]: Checked inductivity of 8122 backedges. 1720 proven. 3282 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2022-03-20 08:24:30,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:24:30,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993008258] [2022-03-20 08:24:30,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993008258] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:24:30,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033086051] [2022-03-20 08:24:30,674 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-20 08:24:30,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:24:30,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:24:30,676 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) [2022-03-20 08:24:30,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-03-20 08:24:30,876 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 42 check-sat command(s) [2022-03-20 08:24:30,876 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 08:24:30,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 1158 conjuncts, 85 conjunts are in the unsatisfiable core [2022-03-20 08:24:30,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:24:31,396 INFO L134 CoverageAnalysis]: Checked inductivity of 8122 backedges. 1802 proven. 3200 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2022-03-20 08:24:31,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:24:31,947 INFO L134 CoverageAnalysis]: Checked inductivity of 8122 backedges. 1802 proven. 3200 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2022-03-20 08:24:31,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033086051] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:24:31,947 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:24:31,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 46, 46] total 51 [2022-03-20 08:24:31,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579402783] [2022-03-20 08:24:31,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:24:31,948 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-03-20 08:24:31,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:24:31,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-03-20 08:24:31,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1006, Invalid=1544, Unknown=0, NotChecked=0, Total=2550 [2022-03-20 08:24:31,949 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) [2022-03-20 08:24:32,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:24:32,955 INFO L93 Difference]: Finished difference Result 410 states and 423 transitions. [2022-03-20 08:24:32,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-03-20 08:24:32,955 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 [2022-03-20 08:24:32,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:24:32,957 INFO L225 Difference]: With dead ends: 410 [2022-03-20 08:24:32,957 INFO L226 Difference]: Without dead ends: 408 [2022-03-20 08:24:32,958 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 [2022-03-20 08:24:32,958 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 [2022-03-20 08:24:32,958 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] [2022-03-20 08:24:32,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2022-03-20 08:24:32,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 403. [2022-03-20 08:24:32,984 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) [2022-03-20 08:24:32,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 415 transitions. [2022-03-20 08:24:32,985 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 415 transitions. Word has length 420 [2022-03-20 08:24:32,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:24:32,985 INFO L478 AbstractCegarLoop]: Abstraction has 403 states and 415 transitions. [2022-03-20 08:24:32,986 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) [2022-03-20 08:24:32,986 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 415 transitions. [2022-03-20 08:24:32,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2022-03-20 08:24:32,987 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:24:32,988 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] [2022-03-20 08:24:33,009 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2022-03-20 08:24:33,203 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 [2022-03-20 08:24:33,203 INFO L403 AbstractCegarLoop]: === Iteration 52 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:24:33,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:24:33,204 INFO L85 PathProgramCache]: Analyzing trace with hash 2013148152, now seen corresponding path program 49 times [2022-03-20 08:24:33,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:24:33,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207922195] [2022-03-20 08:24:33,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:24:33,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:24:33,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:34,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:24:34,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:34,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-03-20 08:24:34,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:34,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-03-20 08:24:34,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:34,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-03-20 08:24:34,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:34,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-03-20 08:24:34,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:34,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-03-20 08:24:34,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:34,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-03-20 08:24:34,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:34,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-03-20 08:24:34,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:34,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-03-20 08:24:34,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:34,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-03-20 08:24:34,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:34,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-03-20 08:24:34,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:34,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-03-20 08:24:34,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:34,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-03-20 08:24:34,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:34,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-03-20 08:24:34,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:34,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-03-20 08:24:34,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:34,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-03-20 08:24:34,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:34,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-03-20 08:24:34,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:34,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-03-20 08:24:34,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:34,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-03-20 08:24:34,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:34,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-03-20 08:24:34,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:34,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-03-20 08:24:34,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:34,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-03-20 08:24:34,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:34,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-03-20 08:24:34,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:34,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-03-20 08:24:34,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:35,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-03-20 08:24:35,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:35,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-03-20 08:24:35,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:35,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-03-20 08:24:35,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:35,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-03-20 08:24:35,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:35,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-03-20 08:24:35,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:35,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-03-20 08:24:35,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:35,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-03-20 08:24:35,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:35,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-03-20 08:24:35,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:35,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-03-20 08:24:35,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:35,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-03-20 08:24:35,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:35,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-03-20 08:24:35,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:35,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-03-20 08:24:35,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:35,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-03-20 08:24:35,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:35,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-03-20 08:24:35,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:35,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-03-20 08:24:35,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:35,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-03-20 08:24:35,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:35,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-03-20 08:24:35,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:35,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2022-03-20 08:24:35,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:35,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2022-03-20 08:24:35,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:35,023 INFO L134 CoverageAnalysis]: Checked inductivity of 8778 backedges. 3489 proven. 1845 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2022-03-20 08:24:35,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:24:35,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207922195] [2022-03-20 08:24:35,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207922195] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:24:35,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241391613] [2022-03-20 08:24:35,023 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-20 08:24:35,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:24:35,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:24:35,025 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) [2022-03-20 08:24:35,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-03-20 08:24:35,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:35,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 1192 conjuncts, 86 conjunts are in the unsatisfiable core [2022-03-20 08:24:35,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:24:37,793 INFO L134 CoverageAnalysis]: Checked inductivity of 8778 backedges. 3772 proven. 1722 refuted. 0 times theorem prover too weak. 3284 trivial. 0 not checked. [2022-03-20 08:24:37,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:24:38,351 INFO L134 CoverageAnalysis]: Checked inductivity of 8778 backedges. 3610 proven. 1722 refuted. 0 times theorem prover too weak. 3446 trivial. 0 not checked. [2022-03-20 08:24:38,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241391613] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:24:38,351 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:24:38,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 86, 86] total 132 [2022-03-20 08:24:38,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441307579] [2022-03-20 08:24:38,352 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:24:38,352 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 132 states [2022-03-20 08:24:38,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:24:38,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2022-03-20 08:24:38,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3833, Invalid=13459, Unknown=0, NotChecked=0, Total=17292 [2022-03-20 08:24:38,354 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) [2022-03-20 08:24:41,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:24:41,533 INFO L93 Difference]: Finished difference Result 754 states and 892 transitions. [2022-03-20 08:24:41,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-03-20 08:24:41,533 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 [2022-03-20 08:24:41,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:24:41,535 INFO L225 Difference]: With dead ends: 754 [2022-03-20 08:24:41,535 INFO L226 Difference]: Without dead ends: 573 [2022-03-20 08:24:41,537 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1170 GetRequests, 956 SyntacticMatches, 0 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12751 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=10282, Invalid=36158, Unknown=0, NotChecked=0, Total=46440 [2022-03-20 08:24:41,537 INFO L913 BasicCegarLoop]: 96 mSDtfsCounter, 896 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 2605 mSolverCounterSat, 610 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 1.0s IncrementalHoareTripleChecker+Time [2022-03-20 08:24:41,538 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [897 Valid, 158 Invalid, 3215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [610 Valid, 2605 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-20 08:24:41,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2022-03-20 08:24:41,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 405. [2022-03-20 08:24:41,563 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) [2022-03-20 08:24:41,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 417 transitions. [2022-03-20 08:24:41,564 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 417 transitions. Word has length 436 [2022-03-20 08:24:41,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:24:41,564 INFO L478 AbstractCegarLoop]: Abstraction has 405 states and 417 transitions. [2022-03-20 08:24:41,565 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) [2022-03-20 08:24:41,565 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 417 transitions. [2022-03-20 08:24:41,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2022-03-20 08:24:41,566 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:24:41,566 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] [2022-03-20 08:24:41,587 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-03-20 08:24:41,785 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 [2022-03-20 08:24:41,785 INFO L403 AbstractCegarLoop]: === Iteration 53 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:24:41,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:24:41,785 INFO L85 PathProgramCache]: Analyzing trace with hash -498131109, now seen corresponding path program 50 times [2022-03-20 08:24:41,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:24:41,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611280791] [2022-03-20 08:24:41,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:24:41,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:24:41,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:43,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:24:43,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:43,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-03-20 08:24:43,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:43,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-03-20 08:24:43,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:43,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-03-20 08:24:43,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:43,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-03-20 08:24:43,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:43,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-03-20 08:24:43,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:43,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-03-20 08:24:43,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:43,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-03-20 08:24:43,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:43,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-03-20 08:24:43,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:43,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-03-20 08:24:43,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:43,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-03-20 08:24:43,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:43,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-03-20 08:24:43,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:43,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-03-20 08:24:43,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:43,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-03-20 08:24:43,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:43,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-03-20 08:24:43,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:43,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-03-20 08:24:43,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:43,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-03-20 08:24:43,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:43,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-03-20 08:24:43,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:43,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-03-20 08:24:43,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:43,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-03-20 08:24:43,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:43,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-03-20 08:24:43,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:43,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-03-20 08:24:43,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:43,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-03-20 08:24:43,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:43,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-03-20 08:24:43,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:43,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-03-20 08:24:43,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:43,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-03-20 08:24:43,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:43,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-03-20 08:24:43,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:43,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-03-20 08:24:43,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:43,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-03-20 08:24:43,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:43,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-03-20 08:24:43,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:43,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-03-20 08:24:43,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:43,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-03-20 08:24:43,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:43,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-03-20 08:24:43,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:43,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-03-20 08:24:43,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:43,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-03-20 08:24:43,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:43,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-03-20 08:24:43,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:43,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-03-20 08:24:43,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:43,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-03-20 08:24:43,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:43,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-03-20 08:24:43,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:43,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-03-20 08:24:43,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:43,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-03-20 08:24:43,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:43,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-03-20 08:24:43,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:43,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-03-20 08:24:43,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:43,605 INFO L134 CoverageAnalysis]: Checked inductivity of 8862 backedges. 3489 proven. 1929 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2022-03-20 08:24:43,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:24:43,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611280791] [2022-03-20 08:24:43,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611280791] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:24:43,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487312933] [2022-03-20 08:24:43,606 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 08:24:43,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:24:43,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:24:43,607 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) [2022-03-20 08:24:43,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-03-20 08:24:43,733 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 08:24:43,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 08:24:43,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 1202 conjuncts, 88 conjunts are in the unsatisfiable core [2022-03-20 08:24:43,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:24:45,894 INFO L134 CoverageAnalysis]: Checked inductivity of 8862 backedges. 1890 proven. 3528 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2022-03-20 08:24:45,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:24:46,485 INFO L134 CoverageAnalysis]: Checked inductivity of 8862 backedges. 1890 proven. 3528 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2022-03-20 08:24:46,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487312933] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:24:46,486 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:24:46,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 47, 47] total 134 [2022-03-20 08:24:46,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999617374] [2022-03-20 08:24:46,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:24:46,487 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 134 states [2022-03-20 08:24:46,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:24:46,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2022-03-20 08:24:46,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2932, Invalid=14890, Unknown=0, NotChecked=0, Total=17822 [2022-03-20 08:24:46,488 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) [2022-03-20 08:24:52,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:24:52,469 INFO L93 Difference]: Finished difference Result 767 states and 909 transitions. [2022-03-20 08:24:52,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 176 states. [2022-03-20 08:24:52,469 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 [2022-03-20 08:24:52,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:24:52,471 INFO L225 Difference]: With dead ends: 767 [2022-03-20 08:24:52,471 INFO L226 Difference]: Without dead ends: 588 [2022-03-20 08:24:52,475 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1267 GetRequests, 961 SyntacticMatches, 1 SemanticMatches, 305 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32884 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=15663, Invalid=78279, Unknown=0, NotChecked=0, Total=93942 [2022-03-20 08:24:52,475 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, 2.0s IncrementalHoareTripleChecker+Time [2022-03-20 08:24:52,476 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1302 Valid, 215 Invalid, 6486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1131 Valid, 5355 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-03-20 08:24:52,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2022-03-20 08:24:52,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 415. [2022-03-20 08:24:52,502 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) [2022-03-20 08:24:52,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 427 transitions. [2022-03-20 08:24:52,503 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 427 transitions. Word has length 438 [2022-03-20 08:24:52,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:24:52,503 INFO L478 AbstractCegarLoop]: Abstraction has 415 states and 427 transitions. [2022-03-20 08:24:52,504 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) [2022-03-20 08:24:52,504 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 427 transitions. [2022-03-20 08:24:52,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2022-03-20 08:24:52,505 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:24:52,505 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] [2022-03-20 08:24:52,523 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2022-03-20 08:24:52,706 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 [2022-03-20 08:24:52,706 INFO L403 AbstractCegarLoop]: === Iteration 54 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:24:52,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:24:52,706 INFO L85 PathProgramCache]: Analyzing trace with hash 2042736274, now seen corresponding path program 51 times [2022-03-20 08:24:52,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:24:52,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637569644] [2022-03-20 08:24:52,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:24:52,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:24:52,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:54,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:24:54,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:54,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-03-20 08:24:54,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:54,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-03-20 08:24:54,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:54,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-03-20 08:24:54,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:54,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-03-20 08:24:54,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:54,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-03-20 08:24:54,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:54,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-03-20 08:24:54,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:54,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-03-20 08:24:54,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:54,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-03-20 08:24:54,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:54,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-03-20 08:24:54,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:54,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-03-20 08:24:54,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:54,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-03-20 08:24:54,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:54,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-03-20 08:24:54,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:54,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-03-20 08:24:54,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:54,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-03-20 08:24:54,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:54,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-03-20 08:24:54,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:54,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-03-20 08:24:54,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:54,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-03-20 08:24:54,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:54,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-03-20 08:24:54,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:54,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-03-20 08:24:54,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:54,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-03-20 08:24:54,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:54,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-03-20 08:24:54,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:54,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-03-20 08:24:54,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:54,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-03-20 08:24:54,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:54,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-03-20 08:24:54,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:54,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-03-20 08:24:54,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:54,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-03-20 08:24:54,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:54,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-03-20 08:24:54,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:54,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-03-20 08:24:54,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:54,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-03-20 08:24:54,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:54,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-03-20 08:24:54,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:54,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-03-20 08:24:54,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:54,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-03-20 08:24:54,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:54,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-03-20 08:24:54,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:54,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-03-20 08:24:54,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:54,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-03-20 08:24:54,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:54,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-03-20 08:24:54,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:54,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-03-20 08:24:54,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:54,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-03-20 08:24:54,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:54,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-03-20 08:24:54,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:54,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-03-20 08:24:54,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:54,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2022-03-20 08:24:54,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:54,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2022-03-20 08:24:54,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:54,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2022-03-20 08:24:54,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:54,636 INFO L134 CoverageAnalysis]: Checked inductivity of 9288 backedges. 3658 proven. 2018 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2022-03-20 08:24:54,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:24:54,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637569644] [2022-03-20 08:24:54,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637569644] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:24:54,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785021742] [2022-03-20 08:24:54,637 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-20 08:24:54,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:24:54,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:24:54,638 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) [2022-03-20 08:24:54,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-03-20 08:24:54,844 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 44 check-sat command(s) [2022-03-20 08:24:54,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 08:24:54,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 1229 conjuncts, 90 conjunts are in the unsatisfiable core [2022-03-20 08:24:54,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:24:57,103 INFO L134 CoverageAnalysis]: Checked inductivity of 9288 backedges. 1978 proven. 3698 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2022-03-20 08:24:57,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:24:57,692 INFO L134 CoverageAnalysis]: Checked inductivity of 9288 backedges. 1978 proven. 3698 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2022-03-20 08:24:57,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785021742] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:24:57,693 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:24:57,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 48, 48] total 137 [2022-03-20 08:24:57,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738175839] [2022-03-20 08:24:57,693 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:24:57,694 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 137 states [2022-03-20 08:24:57,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:24:57,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2022-03-20 08:24:57,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3066, Invalid=15566, Unknown=0, NotChecked=0, Total=18632 [2022-03-20 08:24:57,696 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) [2022-03-20 08:25:03,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:25:03,861 INFO L93 Difference]: Finished difference Result 785 states and 930 transitions. [2022-03-20 08:25:03,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states. [2022-03-20 08:25:03,861 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 [2022-03-20 08:25:03,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:25:03,863 INFO L225 Difference]: With dead ends: 785 [2022-03-20 08:25:03,863 INFO L226 Difference]: Without dead ends: 602 [2022-03-20 08:25:03,869 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 [2022-03-20 08:25:03,870 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, 2.0s IncrementalHoareTripleChecker+Time [2022-03-20 08:25:03,870 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1407 Valid, 238 Invalid, 6669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1325 Valid, 5344 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-03-20 08:25:03,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2022-03-20 08:25:03,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 425. [2022-03-20 08:25:03,920 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) [2022-03-20 08:25:03,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 437 transitions. [2022-03-20 08:25:03,921 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 437 transitions. Word has length 448 [2022-03-20 08:25:03,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:25:03,921 INFO L478 AbstractCegarLoop]: Abstraction has 425 states and 437 transitions. [2022-03-20 08:25:03,921 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) [2022-03-20 08:25:03,921 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 437 transitions. [2022-03-20 08:25:03,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2022-03-20 08:25:03,924 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:25:03,925 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] [2022-03-20 08:25:03,942 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2022-03-20 08:25:04,127 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 [2022-03-20 08:25:04,127 INFO L403 AbstractCegarLoop]: === Iteration 55 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:25:04,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:25:04,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1276827895, now seen corresponding path program 52 times [2022-03-20 08:25:04,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:25:04,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762837784] [2022-03-20 08:25:04,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:25:04,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:25:04,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:06,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:25:06,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:06,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-03-20 08:25:06,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:06,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-03-20 08:25:06,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:06,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-03-20 08:25:06,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:06,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-03-20 08:25:06,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:06,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-03-20 08:25:06,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:06,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-03-20 08:25:06,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:06,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-03-20 08:25:06,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:06,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-03-20 08:25:06,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:06,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-03-20 08:25:06,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:06,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-03-20 08:25:06,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:06,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-03-20 08:25:06,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:06,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-03-20 08:25:06,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:06,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-03-20 08:25:06,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:06,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-03-20 08:25:06,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:06,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-03-20 08:25:06,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:06,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-03-20 08:25:06,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:06,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-03-20 08:25:06,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:06,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-03-20 08:25:06,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:06,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-03-20 08:25:06,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:06,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-03-20 08:25:06,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:06,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-03-20 08:25:06,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:06,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-03-20 08:25:06,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:06,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-03-20 08:25:06,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:06,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-03-20 08:25:06,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:06,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-03-20 08:25:06,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:06,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-03-20 08:25:06,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:06,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-03-20 08:25:06,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:06,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-03-20 08:25:06,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:06,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-03-20 08:25:06,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:06,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-03-20 08:25:06,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:06,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-03-20 08:25:06,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:06,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-03-20 08:25:06,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:06,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-03-20 08:25:06,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:06,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-03-20 08:25:06,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:06,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-03-20 08:25:06,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:06,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-03-20 08:25:06,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:06,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-03-20 08:25:06,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:06,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-03-20 08:25:06,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:06,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-03-20 08:25:06,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:06,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-03-20 08:25:06,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:06,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-03-20 08:25:06,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:06,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-03-20 08:25:06,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:06,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-03-20 08:25:06,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:06,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2022-03-20 08:25:06,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:06,158 INFO L134 CoverageAnalysis]: Checked inductivity of 9724 backedges. 3831 proven. 2109 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2022-03-20 08:25:06,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:25:06,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762837784] [2022-03-20 08:25:06,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762837784] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:25:06,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351780687] [2022-03-20 08:25:06,159 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-20 08:25:06,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:25:06,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:25:06,160 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) [2022-03-20 08:25:06,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-03-20 08:25:06,297 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-20 08:25:06,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 08:25:06,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 1256 conjuncts, 92 conjunts are in the unsatisfiable core [2022-03-20 08:25:06,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:25:08,643 INFO L134 CoverageAnalysis]: Checked inductivity of 9724 backedges. 2068 proven. 3872 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2022-03-20 08:25:08,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:25:09,250 INFO L134 CoverageAnalysis]: Checked inductivity of 9724 backedges. 2068 proven. 3872 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2022-03-20 08:25:09,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351780687] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:25:09,250 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:25:09,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 49, 49] total 140 [2022-03-20 08:25:09,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117007703] [2022-03-20 08:25:09,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:25:09,251 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 140 states [2022-03-20 08:25:09,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:25:09,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2022-03-20 08:25:09,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3203, Invalid=16257, Unknown=0, NotChecked=0, Total=19460 [2022-03-20 08:25:09,253 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) [2022-03-20 08:25:15,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:25:15,934 INFO L93 Difference]: Finished difference Result 803 states and 951 transitions. [2022-03-20 08:25:15,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2022-03-20 08:25:15,935 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 [2022-03-20 08:25:15,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:25:15,936 INFO L225 Difference]: With dead ends: 803 [2022-03-20 08:25:15,936 INFO L226 Difference]: Without dead ends: 616 [2022-03-20 08:25:15,942 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1325 GetRequests, 1005 SyntacticMatches, 1 SemanticMatches, 319 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36034 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=17111, Invalid=85609, Unknown=0, NotChecked=0, Total=102720 [2022-03-20 08:25:15,942 INFO L913 BasicCegarLoop]: 144 mSDtfsCounter, 1269 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 6674 mSolverCounterSat, 1081 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s 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, 2.3s IncrementalHoareTripleChecker+Time [2022-03-20 08:25:15,942 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1270 Valid, 256 Invalid, 7755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1081 Valid, 6674 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-03-20 08:25:15,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2022-03-20 08:25:15,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 435. [2022-03-20 08:25:15,972 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) [2022-03-20 08:25:15,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 447 transitions. [2022-03-20 08:25:15,972 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 447 transitions. Word has length 458 [2022-03-20 08:25:15,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:25:15,973 INFO L478 AbstractCegarLoop]: Abstraction has 435 states and 447 transitions. [2022-03-20 08:25:15,973 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) [2022-03-20 08:25:15,973 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 447 transitions. [2022-03-20 08:25:15,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2022-03-20 08:25:15,975 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:25:15,975 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] [2022-03-20 08:25:15,994 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2022-03-20 08:25:16,194 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 [2022-03-20 08:25:16,194 INFO L403 AbstractCegarLoop]: === Iteration 56 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:25:16,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:25:16,195 INFO L85 PathProgramCache]: Analyzing trace with hash -197855040, now seen corresponding path program 53 times [2022-03-20 08:25:16,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:25:16,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744246913] [2022-03-20 08:25:16,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:25:16,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:25:16,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:18,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:25:18,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:18,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-03-20 08:25:18,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:18,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-03-20 08:25:18,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:18,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-03-20 08:25:18,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:18,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-03-20 08:25:18,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:18,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-03-20 08:25:18,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:18,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-03-20 08:25:18,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:18,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-03-20 08:25:18,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:18,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-03-20 08:25:18,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:18,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-03-20 08:25:18,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:18,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-03-20 08:25:18,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:18,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-03-20 08:25:18,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:18,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-03-20 08:25:18,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:18,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-03-20 08:25:18,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:18,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-03-20 08:25:18,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:18,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-03-20 08:25:18,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:18,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-03-20 08:25:18,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:18,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-03-20 08:25:18,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:18,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-03-20 08:25:18,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:18,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-03-20 08:25:18,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:18,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-03-20 08:25:18,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:18,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-03-20 08:25:18,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:18,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-03-20 08:25:18,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:18,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-03-20 08:25:18,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:18,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-03-20 08:25:18,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:18,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-03-20 08:25:18,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:18,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-03-20 08:25:18,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:18,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-03-20 08:25:18,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:18,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-03-20 08:25:18,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:18,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-03-20 08:25:18,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:18,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-03-20 08:25:18,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:18,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-03-20 08:25:18,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:18,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-03-20 08:25:18,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:18,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-03-20 08:25:18,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:18,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-03-20 08:25:18,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:18,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-03-20 08:25:18,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:18,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-03-20 08:25:18,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:18,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-03-20 08:25:18,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:18,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-03-20 08:25:18,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:18,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-03-20 08:25:18,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:18,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2022-03-20 08:25:18,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:18,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2022-03-20 08:25:18,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:18,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2022-03-20 08:25:18,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:18,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2022-03-20 08:25:18,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:18,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2022-03-20 08:25:18,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:18,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2022-03-20 08:25:18,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:18,330 INFO L134 CoverageAnalysis]: Checked inductivity of 10170 backedges. 4008 proven. 2202 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2022-03-20 08:25:18,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:25:18,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744246913] [2022-03-20 08:25:18,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744246913] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:25:18,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890336922] [2022-03-20 08:25:18,330 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-20 08:25:18,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:25:18,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:25:18,331 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) [2022-03-20 08:25:18,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-03-20 08:25:18,547 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2022-03-20 08:25:18,547 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 08:25:18,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 1283 conjuncts, 94 conjunts are in the unsatisfiable core [2022-03-20 08:25:18,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:25:21,622 INFO L134 CoverageAnalysis]: Checked inductivity of 10170 backedges. 4140 proven. 2070 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2022-03-20 08:25:21,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:25:22,252 INFO L134 CoverageAnalysis]: Checked inductivity of 10170 backedges. 4140 proven. 2070 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2022-03-20 08:25:22,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890336922] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:25:22,252 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:25:22,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 94, 94] total 143 [2022-03-20 08:25:22,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991280101] [2022-03-20 08:25:22,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:25:22,253 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 143 states [2022-03-20 08:25:22,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:25:22,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2022-03-20 08:25:22,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4517, Invalid=15789, Unknown=0, NotChecked=0, Total=20306 [2022-03-20 08:25:22,255 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) [2022-03-20 08:25:25,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:25:25,925 INFO L93 Difference]: Finished difference Result 812 states and 962 transitions. [2022-03-20 08:25:25,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-03-20 08:25:25,925 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 [2022-03-20 08:25:25,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:25:25,927 INFO L225 Difference]: With dead ends: 812 [2022-03-20 08:25:25,927 INFO L226 Difference]: Without dead ends: 621 [2022-03-20 08:25:25,931 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1259 GetRequests, 1026 SyntacticMatches, 0 SemanticMatches, 233 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15070 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=12224, Invalid=42766, Unknown=0, NotChecked=0, Total=54990 [2022-03-20 08:25:25,932 INFO L913 BasicCegarLoop]: 104 mSDtfsCounter, 1199 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 2493 mSolverCounterSat, 873 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.1s IncrementalHoareTripleChecker+Time [2022-03-20 08:25:25,932 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1200 Valid, 141 Invalid, 3366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [873 Valid, 2493 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-20 08:25:25,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2022-03-20 08:25:25,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 437. [2022-03-20 08:25:25,961 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) [2022-03-20 08:25:25,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 449 transitions. [2022-03-20 08:25:25,962 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 449 transitions. Word has length 468 [2022-03-20 08:25:25,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:25:25,962 INFO L478 AbstractCegarLoop]: Abstraction has 437 states and 449 transitions. [2022-03-20 08:25:25,962 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) [2022-03-20 08:25:25,962 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 449 transitions. [2022-03-20 08:25:25,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2022-03-20 08:25:25,964 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:25:25,964 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] [2022-03-20 08:25:25,982 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2022-03-20 08:25:26,165 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 [2022-03-20 08:25:26,165 INFO L403 AbstractCegarLoop]: === Iteration 57 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:25:26,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:25:26,165 INFO L85 PathProgramCache]: Analyzing trace with hash -762865629, now seen corresponding path program 54 times [2022-03-20 08:25:26,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:25:26,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944356016] [2022-03-20 08:25:26,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:25:26,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:25:26,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:27,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:25:27,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:27,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-03-20 08:25:27,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:27,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-03-20 08:25:27,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:27,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-03-20 08:25:27,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:27,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-03-20 08:25:27,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:27,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-03-20 08:25:27,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:27,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-03-20 08:25:27,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:27,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-03-20 08:25:27,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:27,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-03-20 08:25:27,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:27,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-03-20 08:25:27,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:27,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-03-20 08:25:27,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:27,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-03-20 08:25:27,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:27,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-03-20 08:25:27,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:27,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-03-20 08:25:27,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:27,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-03-20 08:25:27,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:27,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-03-20 08:25:27,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:27,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-03-20 08:25:27,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:27,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-03-20 08:25:27,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:27,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-03-20 08:25:27,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:27,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-03-20 08:25:27,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:27,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-03-20 08:25:27,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:27,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-03-20 08:25:27,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:27,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-03-20 08:25:27,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:27,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-03-20 08:25:27,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:27,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-03-20 08:25:27,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:27,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-03-20 08:25:27,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:27,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-03-20 08:25:27,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:27,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-03-20 08:25:27,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:27,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-03-20 08:25:27,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:27,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-03-20 08:25:27,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:27,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-03-20 08:25:27,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:27,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-03-20 08:25:27,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:27,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-03-20 08:25:27,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:27,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-03-20 08:25:27,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:27,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-03-20 08:25:27,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:27,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-03-20 08:25:27,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:27,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-03-20 08:25:27,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:27,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-03-20 08:25:27,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:27,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-03-20 08:25:27,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:27,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-03-20 08:25:27,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:27,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-03-20 08:25:27,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:27,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-03-20 08:25:27,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:27,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-03-20 08:25:27,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:27,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2022-03-20 08:25:27,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:27,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2022-03-20 08:25:27,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:27,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2022-03-20 08:25:27,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:27,088 INFO L134 CoverageAnalysis]: Checked inductivity of 10262 backedges. 2160 proven. 4142 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2022-03-20 08:25:27,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:25:27,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944356016] [2022-03-20 08:25:27,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944356016] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:25:27,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241728691] [2022-03-20 08:25:27,089 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-20 08:25:27,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:25:27,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:25:27,090 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) [2022-03-20 08:25:27,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-03-20 08:25:27,310 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 47 check-sat command(s) [2022-03-20 08:25:27,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 08:25:27,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 1293 conjuncts, 95 conjunts are in the unsatisfiable core [2022-03-20 08:25:27,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:25:27,899 INFO L134 CoverageAnalysis]: Checked inductivity of 10262 backedges. 2252 proven. 4050 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2022-03-20 08:25:27,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:25:28,520 INFO L134 CoverageAnalysis]: Checked inductivity of 10262 backedges. 2252 proven. 4050 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2022-03-20 08:25:28,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241728691] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:25:28,521 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:25:28,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 51, 51] total 56 [2022-03-20 08:25:28,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639262873] [2022-03-20 08:25:28,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:25:28,522 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-03-20 08:25:28,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:25:28,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-03-20 08:25:28,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1241, Invalid=1839, Unknown=0, NotChecked=0, Total=3080 [2022-03-20 08:25:28,523 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) [2022-03-20 08:25:29,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:25:29,758 INFO L93 Difference]: Finished difference Result 456 states and 470 transitions. [2022-03-20 08:25:29,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-03-20 08:25:29,758 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 [2022-03-20 08:25:29,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:25:29,760 INFO L225 Difference]: With dead ends: 456 [2022-03-20 08:25:29,760 INFO L226 Difference]: Without dead ends: 454 [2022-03-20 08:25:29,761 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1180 GetRequests, 1073 SyntacticMatches, 1 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2197 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=3715, Invalid=7841, Unknown=0, NotChecked=0, Total=11556 [2022-03-20 08:25:29,763 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 [2022-03-20 08:25:29,763 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] [2022-03-20 08:25:29,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2022-03-20 08:25:29,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 449. [2022-03-20 08:25:29,792 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) [2022-03-20 08:25:29,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 462 transitions. [2022-03-20 08:25:29,793 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 462 transitions. Word has length 470 [2022-03-20 08:25:29,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:25:29,793 INFO L478 AbstractCegarLoop]: Abstraction has 449 states and 462 transitions. [2022-03-20 08:25:29,794 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) [2022-03-20 08:25:29,794 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 462 transitions. [2022-03-20 08:25:29,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2022-03-20 08:25:29,795 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:25:29,796 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] [2022-03-20 08:25:29,816 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2022-03-20 08:25:29,996 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 [2022-03-20 08:25:29,996 INFO L403 AbstractCegarLoop]: === Iteration 58 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:25:29,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:25:29,996 INFO L85 PathProgramCache]: Analyzing trace with hash 119454539, now seen corresponding path program 55 times [2022-03-20 08:25:29,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:25:29,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833442753] [2022-03-20 08:25:29,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:25:29,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:25:30,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:32,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:25:32,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:32,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-03-20 08:25:32,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:32,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-03-20 08:25:32,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:32,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-03-20 08:25:32,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:32,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-03-20 08:25:32,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:32,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-03-20 08:25:32,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:32,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-03-20 08:25:32,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:32,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-03-20 08:25:32,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:32,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-03-20 08:25:32,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:32,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-03-20 08:25:32,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:32,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-03-20 08:25:32,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:32,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-03-20 08:25:32,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:32,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-03-20 08:25:32,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:32,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-03-20 08:25:32,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:32,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-03-20 08:25:32,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:32,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-03-20 08:25:32,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:32,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-03-20 08:25:32,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:32,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-03-20 08:25:32,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:32,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-03-20 08:25:32,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:32,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-03-20 08:25:32,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:32,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-03-20 08:25:32,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:32,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-03-20 08:25:32,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:32,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-03-20 08:25:32,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:32,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-03-20 08:25:32,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:32,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-03-20 08:25:32,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:32,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-03-20 08:25:32,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:32,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-03-20 08:25:32,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:32,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-03-20 08:25:32,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:32,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-03-20 08:25:32,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:32,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-03-20 08:25:32,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:32,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-03-20 08:25:32,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:32,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-03-20 08:25:32,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:32,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-03-20 08:25:32,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:32,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-03-20 08:25:32,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:32,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-03-20 08:25:32,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:32,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-03-20 08:25:32,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:32,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-03-20 08:25:32,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:32,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-03-20 08:25:32,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:32,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-03-20 08:25:32,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:32,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-03-20 08:25:32,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:32,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-03-20 08:25:32,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:32,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-03-20 08:25:32,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:32,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-03-20 08:25:32,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:32,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2022-03-20 08:25:32,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:32,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2022-03-20 08:25:32,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:32,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2022-03-20 08:25:32,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:32,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2022-03-20 08:25:32,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:32,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2022-03-20 08:25:32,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:32,230 INFO L134 CoverageAnalysis]: Checked inductivity of 10998 backedges. 4374 proven. 2300 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2022-03-20 08:25:32,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:25:32,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833442753] [2022-03-20 08:25:32,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833442753] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:25:32,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515312484] [2022-03-20 08:25:32,231 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-20 08:25:32,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:25:32,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:25:32,232 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) [2022-03-20 08:25:32,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-03-20 08:25:32,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:32,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 1327 conjuncts, 96 conjunts are in the unsatisfiable core [2022-03-20 08:25:32,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:25:35,593 INFO L134 CoverageAnalysis]: Checked inductivity of 10998 backedges. 4692 proven. 2162 refuted. 0 times theorem prover too weak. 4144 trivial. 0 not checked. [2022-03-20 08:25:35,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:25:36,263 INFO L134 CoverageAnalysis]: Checked inductivity of 10998 backedges. 4510 proven. 2162 refuted. 0 times theorem prover too weak. 4326 trivial. 0 not checked. [2022-03-20 08:25:36,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515312484] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:25:36,264 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:25:36,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 96, 96] total 147 [2022-03-20 08:25:36,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264149008] [2022-03-20 08:25:36,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:25:36,265 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 147 states [2022-03-20 08:25:36,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:25:36,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 147 interpolants. [2022-03-20 08:25:36,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4758, Invalid=16704, Unknown=0, NotChecked=0, Total=21462 [2022-03-20 08:25:36,267 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) [2022-03-20 08:25:40,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:25:40,137 INFO L93 Difference]: Finished difference Result 840 states and 994 transitions. [2022-03-20 08:25:40,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-03-20 08:25:40,138 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 [2022-03-20 08:25:40,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:25:40,140 INFO L225 Difference]: With dead ends: 840 [2022-03-20 08:25:40,140 INFO L226 Difference]: Without dead ends: 639 [2022-03-20 08:25:40,143 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1305 GetRequests, 1066 SyntacticMatches, 0 SemanticMatches, 239 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15916 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=12797, Invalid=45043, Unknown=0, NotChecked=0, Total=57840 [2022-03-20 08:25:40,143 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 [2022-03-20 08:25:40,143 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] [2022-03-20 08:25:40,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2022-03-20 08:25:40,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 451. [2022-03-20 08:25:40,174 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) [2022-03-20 08:25:40,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 464 transitions. [2022-03-20 08:25:40,174 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 464 transitions. Word has length 486 [2022-03-20 08:25:40,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:25:40,175 INFO L478 AbstractCegarLoop]: Abstraction has 451 states and 464 transitions. [2022-03-20 08:25:40,175 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) [2022-03-20 08:25:40,175 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 464 transitions. [2022-03-20 08:25:40,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2022-03-20 08:25:40,177 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:25:40,177 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] [2022-03-20 08:25:40,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2022-03-20 08:25:40,377 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 [2022-03-20 08:25:40,378 INFO L403 AbstractCegarLoop]: === Iteration 59 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:25:40,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:25:40,378 INFO L85 PathProgramCache]: Analyzing trace with hash 277571566, now seen corresponding path program 56 times [2022-03-20 08:25:40,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:25:40,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397305023] [2022-03-20 08:25:40,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:25:40,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:25:40,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:42,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:25:42,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:42,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-03-20 08:25:42,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:42,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-03-20 08:25:42,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:42,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-03-20 08:25:42,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:42,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-03-20 08:25:42,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:42,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-03-20 08:25:42,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:42,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-03-20 08:25:42,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:42,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-03-20 08:25:42,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:42,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-03-20 08:25:42,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:42,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-03-20 08:25:42,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:42,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-03-20 08:25:42,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:42,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-03-20 08:25:42,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:42,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-03-20 08:25:42,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:42,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-03-20 08:25:42,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:42,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-03-20 08:25:42,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:42,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-03-20 08:25:42,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:42,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-03-20 08:25:42,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:42,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-03-20 08:25:42,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:42,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-03-20 08:25:42,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:42,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-03-20 08:25:42,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:42,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-03-20 08:25:42,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:42,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-03-20 08:25:42,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:42,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-03-20 08:25:42,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:42,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-03-20 08:25:42,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:42,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-03-20 08:25:42,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:42,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-03-20 08:25:42,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:42,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-03-20 08:25:42,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:42,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-03-20 08:25:42,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:42,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-03-20 08:25:42,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:42,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-03-20 08:25:42,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:42,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-03-20 08:25:42,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:42,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-03-20 08:25:42,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:42,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-03-20 08:25:42,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:42,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-03-20 08:25:42,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:42,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-03-20 08:25:42,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:42,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-03-20 08:25:42,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:42,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-03-20 08:25:42,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:42,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-03-20 08:25:42,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:42,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-03-20 08:25:42,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:42,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-03-20 08:25:42,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:42,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2022-03-20 08:25:42,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:42,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2022-03-20 08:25:42,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:42,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2022-03-20 08:25:42,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:42,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2022-03-20 08:25:42,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:42,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2022-03-20 08:25:42,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:42,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2022-03-20 08:25:42,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:42,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2022-03-20 08:25:42,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:42,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2022-03-20 08:25:42,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:42,621 INFO L134 CoverageAnalysis]: Checked inductivity of 11092 backedges. 4374 proven. 2394 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2022-03-20 08:25:42,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:25:42,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397305023] [2022-03-20 08:25:42,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397305023] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:25:42,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263624963] [2022-03-20 08:25:42,621 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 08:25:42,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:25:42,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:25:42,622 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) [2022-03-20 08:25:42,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-03-20 08:25:42,760 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 08:25:42,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 08:25:42,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 1337 conjuncts, 98 conjunts are in the unsatisfiable core [2022-03-20 08:25:42,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:25:45,347 INFO L134 CoverageAnalysis]: Checked inductivity of 11092 backedges. 2350 proven. 4418 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2022-03-20 08:25:45,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:25:45,983 INFO L134 CoverageAnalysis]: Checked inductivity of 11092 backedges. 2350 proven. 4418 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2022-03-20 08:25:45,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263624963] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:25:45,984 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:25:45,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 52, 52] total 149 [2022-03-20 08:25:45,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827405233] [2022-03-20 08:25:45,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:25:45,985 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 149 states [2022-03-20 08:25:45,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:25:45,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2022-03-20 08:25:45,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3632, Invalid=18420, Unknown=0, NotChecked=0, Total=22052 [2022-03-20 08:25:45,986 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) [2022-03-20 08:25:52,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:25:52,926 INFO L93 Difference]: Finished difference Result 853 states and 1011 transitions. [2022-03-20 08:25:52,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2022-03-20 08:25:52,926 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 [2022-03-20 08:25:52,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:25:52,928 INFO L225 Difference]: With dead ends: 853 [2022-03-20 08:25:52,928 INFO L226 Difference]: Without dead ends: 654 [2022-03-20 08:25:52,933 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1412 GetRequests, 1071 SyntacticMatches, 1 SemanticMatches, 340 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41029 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=19403, Invalid=97219, Unknown=0, NotChecked=0, Total=116622 [2022-03-20 08:25:52,933 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 [2022-03-20 08:25:52,933 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] [2022-03-20 08:25:52,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2022-03-20 08:25:52,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 461. [2022-03-20 08:25:52,965 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) [2022-03-20 08:25:52,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 474 transitions. [2022-03-20 08:25:52,965 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 474 transitions. Word has length 488 [2022-03-20 08:25:52,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:25:52,966 INFO L478 AbstractCegarLoop]: Abstraction has 461 states and 474 transitions. [2022-03-20 08:25:52,966 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) [2022-03-20 08:25:52,966 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 474 transitions. [2022-03-20 08:25:52,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2022-03-20 08:25:52,968 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:25:52,968 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] [2022-03-20 08:25:52,986 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2022-03-20 08:25:53,168 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 [2022-03-20 08:25:53,169 INFO L403 AbstractCegarLoop]: === Iteration 60 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:25:53,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:25:53,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1808590181, now seen corresponding path program 57 times [2022-03-20 08:25:53,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:25:53,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119896253] [2022-03-20 08:25:53,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:25:53,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:25:53,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:55,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:25:55,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:55,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-03-20 08:25:55,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:55,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-03-20 08:25:55,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:55,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-03-20 08:25:55,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:55,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-03-20 08:25:55,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:55,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-03-20 08:25:55,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:55,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-03-20 08:25:55,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:55,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-03-20 08:25:55,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:55,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-03-20 08:25:55,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:55,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-03-20 08:25:55,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:55,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-03-20 08:25:55,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:55,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-03-20 08:25:55,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:55,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-03-20 08:25:55,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:55,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-03-20 08:25:55,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:55,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-03-20 08:25:55,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:55,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-03-20 08:25:55,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:55,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-03-20 08:25:55,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:55,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-03-20 08:25:55,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:55,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-03-20 08:25:55,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:55,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-03-20 08:25:55,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:55,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-03-20 08:25:55,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:55,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-03-20 08:25:55,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:55,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-03-20 08:25:55,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:55,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-03-20 08:25:55,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:55,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-03-20 08:25:55,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:55,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-03-20 08:25:55,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:55,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-03-20 08:25:55,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:55,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-03-20 08:25:55,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:55,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-03-20 08:25:55,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:55,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-03-20 08:25:55,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:55,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-03-20 08:25:55,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:55,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-03-20 08:25:55,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:55,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-03-20 08:25:55,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:55,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-03-20 08:25:55,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:55,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-03-20 08:25:55,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:55,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-03-20 08:25:55,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:55,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-03-20 08:25:55,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:55,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-03-20 08:25:55,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:55,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-03-20 08:25:55,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:55,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-03-20 08:25:55,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:55,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-03-20 08:25:55,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:55,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-03-20 08:25:55,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:55,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-03-20 08:25:55,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:55,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2022-03-20 08:25:55,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:55,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2022-03-20 08:25:55,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:55,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2022-03-20 08:25:55,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:55,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2022-03-20 08:25:55,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:55,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2022-03-20 08:25:55,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:55,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2022-03-20 08:25:55,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:25:55,474 INFO L134 CoverageAnalysis]: Checked inductivity of 11568 backedges. 4563 proven. 2493 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2022-03-20 08:25:55,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:25:55,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119896253] [2022-03-20 08:25:55,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119896253] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:25:55,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486058814] [2022-03-20 08:25:55,475 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-20 08:25:55,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:25:55,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:25:55,476 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) [2022-03-20 08:25:55,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-03-20 08:25:55,722 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 49 check-sat command(s) [2022-03-20 08:25:55,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 08:25:55,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 1364 conjuncts, 100 conjunts are in the unsatisfiable core [2022-03-20 08:25:55,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:25:58,411 INFO L134 CoverageAnalysis]: Checked inductivity of 11568 backedges. 2448 proven. 4608 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2022-03-20 08:25:58,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:25:59,111 INFO L134 CoverageAnalysis]: Checked inductivity of 11568 backedges. 2448 proven. 4608 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2022-03-20 08:25:59,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486058814] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:25:59,111 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:25:59,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 53, 53] total 152 [2022-03-20 08:25:59,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031254354] [2022-03-20 08:25:59,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:25:59,113 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 152 states [2022-03-20 08:25:59,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:25:59,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2022-03-20 08:25:59,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3781, Invalid=19171, Unknown=0, NotChecked=0, Total=22952 [2022-03-20 08:25:59,114 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) [2022-03-20 08:26:06,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:26:06,548 INFO L93 Difference]: Finished difference Result 871 states and 1032 transitions. [2022-03-20 08:26:06,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2022-03-20 08:26:06,549 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 [2022-03-20 08:26:06,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:26:06,550 INFO L225 Difference]: With dead ends: 871 [2022-03-20 08:26:06,551 INFO L226 Difference]: Without dead ends: 668 [2022-03-20 08:26:06,557 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 [2022-03-20 08:26:06,557 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 [2022-03-20 08:26:06,557 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] [2022-03-20 08:26:06,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2022-03-20 08:26:06,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 471. [2022-03-20 08:26:06,590 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) [2022-03-20 08:26:06,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 484 transitions. [2022-03-20 08:26:06,591 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 484 transitions. Word has length 498 [2022-03-20 08:26:06,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:26:06,591 INFO L478 AbstractCegarLoop]: Abstraction has 471 states and 484 transitions. [2022-03-20 08:26:06,592 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) [2022-03-20 08:26:06,592 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 484 transitions. [2022-03-20 08:26:06,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2022-03-20 08:26:06,594 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:26:06,594 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] [2022-03-20 08:26:06,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2022-03-20 08:26:06,794 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 [2022-03-20 08:26:06,795 INFO L403 AbstractCegarLoop]: === Iteration 61 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:26:06,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:26:06,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1984922596, now seen corresponding path program 58 times [2022-03-20 08:26:06,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:26:06,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776980868] [2022-03-20 08:26:06,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:26:06,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:26:06,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:09,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:26:09,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:09,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-03-20 08:26:09,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:09,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-03-20 08:26:09,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:09,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-03-20 08:26:09,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:09,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-03-20 08:26:09,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:09,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-03-20 08:26:09,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:09,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-03-20 08:26:09,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:09,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-03-20 08:26:09,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:09,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-03-20 08:26:09,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:09,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-03-20 08:26:09,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:09,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-03-20 08:26:09,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:09,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-03-20 08:26:09,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:09,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-03-20 08:26:09,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:09,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-03-20 08:26:09,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:09,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-03-20 08:26:09,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:09,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-03-20 08:26:09,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:09,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-03-20 08:26:09,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:09,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-03-20 08:26:09,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:09,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-03-20 08:26:09,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:09,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-03-20 08:26:09,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:09,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-03-20 08:26:09,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:09,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-03-20 08:26:09,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:09,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-03-20 08:26:09,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:09,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-03-20 08:26:09,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:09,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-03-20 08:26:09,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:09,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-03-20 08:26:09,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:09,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-03-20 08:26:09,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:09,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-03-20 08:26:09,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:09,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-03-20 08:26:09,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:09,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-03-20 08:26:09,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:09,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-03-20 08:26:09,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:09,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-03-20 08:26:09,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:09,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-03-20 08:26:09,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:09,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-03-20 08:26:09,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:09,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-03-20 08:26:09,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:09,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-03-20 08:26:09,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:09,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-03-20 08:26:09,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:09,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-03-20 08:26:09,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:09,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-03-20 08:26:09,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:09,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2022-03-20 08:26:09,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:09,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2022-03-20 08:26:09,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:09,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2022-03-20 08:26:09,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:09,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2022-03-20 08:26:09,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:09,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2022-03-20 08:26:09,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:09,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2022-03-20 08:26:09,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:09,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2022-03-20 08:26:09,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:09,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2022-03-20 08:26:09,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:09,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2022-03-20 08:26:09,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:09,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2022-03-20 08:26:09,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:09,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2022-03-20 08:26:09,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:09,243 INFO L134 CoverageAnalysis]: Checked inductivity of 12054 backedges. 4756 proven. 2594 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2022-03-20 08:26:09,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:26:09,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776980868] [2022-03-20 08:26:09,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776980868] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:26:09,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672738946] [2022-03-20 08:26:09,243 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-20 08:26:09,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:26:09,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:26:09,244 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) [2022-03-20 08:26:09,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-03-20 08:26:09,393 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-20 08:26:09,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 08:26:09,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 1391 conjuncts, 102 conjunts are in the unsatisfiable core [2022-03-20 08:26:09,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:26:12,210 INFO L134 CoverageAnalysis]: Checked inductivity of 12054 backedges. 2548 proven. 4802 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2022-03-20 08:26:12,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:26:12,886 INFO L134 CoverageAnalysis]: Checked inductivity of 12054 backedges. 2548 proven. 4802 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2022-03-20 08:26:12,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672738946] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:26:12,886 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:26:12,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 54, 54] total 155 [2022-03-20 08:26:12,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800175366] [2022-03-20 08:26:12,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:26:12,887 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 155 states [2022-03-20 08:26:12,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:26:12,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 155 interpolants. [2022-03-20 08:26:12,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3933, Invalid=19937, Unknown=0, NotChecked=0, Total=23870 [2022-03-20 08:26:12,890 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) [2022-03-20 08:26:20,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:26:20,663 INFO L93 Difference]: Finished difference Result 889 states and 1053 transitions. [2022-03-20 08:26:20,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 204 states. [2022-03-20 08:26:20,664 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 [2022-03-20 08:26:20,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:26:20,665 INFO L225 Difference]: With dead ends: 889 [2022-03-20 08:26:20,665 INFO L226 Difference]: Without dead ends: 682 [2022-03-20 08:26:20,671 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1470 GetRequests, 1115 SyntacticMatches, 1 SemanticMatches, 354 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44539 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=21011, Invalid=105369, Unknown=0, NotChecked=0, Total=126380 [2022-03-20 08:26:20,671 INFO L913 BasicCegarLoop]: 159 mSDtfsCounter, 1570 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 7005 mSolverCounterSat, 1392 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s 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, 2.4s IncrementalHoareTripleChecker+Time [2022-03-20 08:26:20,671 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1571 Valid, 266 Invalid, 8397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1392 Valid, 7005 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-03-20 08:26:20,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2022-03-20 08:26:20,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 481. [2022-03-20 08:26:20,705 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) [2022-03-20 08:26:20,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 494 transitions. [2022-03-20 08:26:20,706 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 494 transitions. Word has length 508 [2022-03-20 08:26:20,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:26:20,706 INFO L478 AbstractCegarLoop]: Abstraction has 481 states and 494 transitions. [2022-03-20 08:26:20,706 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) [2022-03-20 08:26:20,706 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 494 transitions. [2022-03-20 08:26:20,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2022-03-20 08:26:20,708 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:26:20,708 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] [2022-03-20 08:26:20,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2022-03-20 08:26:20,909 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 [2022-03-20 08:26:20,909 INFO L403 AbstractCegarLoop]: === Iteration 62 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:26:20,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:26:20,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1074422765, now seen corresponding path program 59 times [2022-03-20 08:26:20,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:26:20,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641622921] [2022-03-20 08:26:20,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:26:20,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:26:20,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:23,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:26:23,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:23,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-03-20 08:26:23,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:23,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-03-20 08:26:23,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:23,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-03-20 08:26:23,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:23,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-03-20 08:26:23,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:23,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-03-20 08:26:23,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:23,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-03-20 08:26:23,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:23,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-03-20 08:26:23,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:23,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-03-20 08:26:23,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:23,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-03-20 08:26:23,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:23,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-03-20 08:26:23,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:23,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-03-20 08:26:23,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:23,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-03-20 08:26:23,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:23,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-03-20 08:26:23,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:23,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-03-20 08:26:23,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:23,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-03-20 08:26:23,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:23,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-03-20 08:26:23,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:23,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-03-20 08:26:23,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:23,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-03-20 08:26:23,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:23,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-03-20 08:26:23,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:23,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-03-20 08:26:23,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:23,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-03-20 08:26:23,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:23,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-03-20 08:26:23,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:23,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-03-20 08:26:23,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:23,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-03-20 08:26:23,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:23,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-03-20 08:26:23,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:23,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-03-20 08:26:23,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:23,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-03-20 08:26:23,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:23,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-03-20 08:26:23,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:23,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-03-20 08:26:23,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:23,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-03-20 08:26:23,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:23,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-03-20 08:26:23,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:23,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-03-20 08:26:23,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:23,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-03-20 08:26:23,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:23,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-03-20 08:26:23,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:23,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-03-20 08:26:23,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:23,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-03-20 08:26:23,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:23,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-03-20 08:26:23,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:23,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-03-20 08:26:23,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:23,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-03-20 08:26:23,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:23,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-03-20 08:26:23,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:23,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-03-20 08:26:23,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:23,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2022-03-20 08:26:23,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:23,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2022-03-20 08:26:23,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:23,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2022-03-20 08:26:23,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:23,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2022-03-20 08:26:23,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:23,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2022-03-20 08:26:23,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:23,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2022-03-20 08:26:23,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:23,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2022-03-20 08:26:23,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:23,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2022-03-20 08:26:23,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:23,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2022-03-20 08:26:23,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:23,412 INFO L134 CoverageAnalysis]: Checked inductivity of 12550 backedges. 4953 proven. 2697 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2022-03-20 08:26:23,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:26:23,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641622921] [2022-03-20 08:26:23,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641622921] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:26:23,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709195619] [2022-03-20 08:26:23,413 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-20 08:26:23,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:26:23,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:26:23,414 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) [2022-03-20 08:26:23,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-03-20 08:26:23,669 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 51 check-sat command(s) [2022-03-20 08:26:23,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 08:26:23,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 1418 conjuncts, 104 conjunts are in the unsatisfiable core [2022-03-20 08:26:23,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:26:27,358 INFO L134 CoverageAnalysis]: Checked inductivity of 12550 backedges. 5100 proven. 2550 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2022-03-20 08:26:27,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:26:28,045 INFO L134 CoverageAnalysis]: Checked inductivity of 12550 backedges. 5100 proven. 2550 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2022-03-20 08:26:28,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709195619] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:26:28,045 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:26:28,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 104, 104] total 158 [2022-03-20 08:26:28,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39360334] [2022-03-20 08:26:28,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:26:28,046 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 158 states [2022-03-20 08:26:28,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:26:28,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants. [2022-03-20 08:26:28,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5517, Invalid=19289, Unknown=0, NotChecked=0, Total=24806 [2022-03-20 08:26:28,048 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) [2022-03-20 08:26:32,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:26:32,455 INFO L93 Difference]: Finished difference Result 898 states and 1064 transitions. [2022-03-20 08:26:32,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-03-20 08:26:32,456 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 [2022-03-20 08:26:32,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:26:32,458 INFO L225 Difference]: With dead ends: 898 [2022-03-20 08:26:32,458 INFO L226 Difference]: Without dead ends: 687 [2022-03-20 08:26:32,462 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 [2022-03-20 08:26:32,462 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 [2022-03-20 08:26:32,462 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] [2022-03-20 08:26:32,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2022-03-20 08:26:32,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 483. [2022-03-20 08:26:32,497 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) [2022-03-20 08:26:32,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 496 transitions. [2022-03-20 08:26:32,498 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 496 transitions. Word has length 518 [2022-03-20 08:26:32,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:26:32,498 INFO L478 AbstractCegarLoop]: Abstraction has 483 states and 496 transitions. [2022-03-20 08:26:32,498 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) [2022-03-20 08:26:32,498 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 496 transitions. [2022-03-20 08:26:32,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2022-03-20 08:26:32,500 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:26:32,501 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] [2022-03-20 08:26:32,519 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2022-03-20 08:26:32,701 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 [2022-03-20 08:26:32,701 INFO L403 AbstractCegarLoop]: === Iteration 63 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:26:32,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:26:32,702 INFO L85 PathProgramCache]: Analyzing trace with hash 739179702, now seen corresponding path program 60 times [2022-03-20 08:26:32,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:26:32,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385910465] [2022-03-20 08:26:32,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:26:32,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:26:32,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:33,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:26:33,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:33,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-03-20 08:26:33,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:33,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-03-20 08:26:33,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:33,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-03-20 08:26:33,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:33,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-03-20 08:26:33,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:33,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-03-20 08:26:33,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:33,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-03-20 08:26:33,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:33,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-03-20 08:26:33,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:33,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-03-20 08:26:33,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:33,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-03-20 08:26:33,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:33,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-03-20 08:26:33,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:33,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-03-20 08:26:33,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:33,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-03-20 08:26:33,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:33,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-03-20 08:26:33,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:33,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-03-20 08:26:33,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:33,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-03-20 08:26:33,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:33,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-03-20 08:26:33,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:33,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-03-20 08:26:33,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:33,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-03-20 08:26:33,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:33,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-03-20 08:26:33,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:33,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-03-20 08:26:33,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:33,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-03-20 08:26:33,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:33,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-03-20 08:26:33,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:33,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-03-20 08:26:33,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:33,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-03-20 08:26:33,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:33,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-03-20 08:26:33,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:33,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-03-20 08:26:33,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:33,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-03-20 08:26:33,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:33,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-03-20 08:26:33,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:33,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-03-20 08:26:33,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:33,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-03-20 08:26:33,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:33,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-03-20 08:26:33,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:33,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-03-20 08:26:33,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:33,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-03-20 08:26:33,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:33,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-03-20 08:26:33,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:33,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-03-20 08:26:33,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:33,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-03-20 08:26:33,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:33,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-03-20 08:26:33,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:33,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-03-20 08:26:33,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:33,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2022-03-20 08:26:33,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:33,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2022-03-20 08:26:33,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:33,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2022-03-20 08:26:33,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:33,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2022-03-20 08:26:33,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:33,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2022-03-20 08:26:33,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:33,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2022-03-20 08:26:33,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:33,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2022-03-20 08:26:33,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:33,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2022-03-20 08:26:33,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:33,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2022-03-20 08:26:33,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:33,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 492 [2022-03-20 08:26:33,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:33,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 500 [2022-03-20 08:26:33,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:33,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2022-03-20 08:26:33,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:33,777 INFO L134 CoverageAnalysis]: Checked inductivity of 12652 backedges. 2650 proven. 5102 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2022-03-20 08:26:33,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:26:33,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385910465] [2022-03-20 08:26:33,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385910465] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:26:33,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467754833] [2022-03-20 08:26:33,778 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-20 08:26:33,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:26:33,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:26:33,779 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) [2022-03-20 08:26:33,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-03-20 08:26:34,019 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 52 check-sat command(s) [2022-03-20 08:26:34,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 08:26:34,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 1428 conjuncts, 105 conjunts are in the unsatisfiable core [2022-03-20 08:26:34,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:26:34,664 INFO L134 CoverageAnalysis]: Checked inductivity of 12652 backedges. 2752 proven. 5000 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2022-03-20 08:26:34,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:26:35,338 INFO L134 CoverageAnalysis]: Checked inductivity of 12652 backedges. 2752 proven. 5000 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2022-03-20 08:26:35,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1467754833] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:26:35,338 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:26:35,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 56, 56] total 61 [2022-03-20 08:26:35,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085384368] [2022-03-20 08:26:35,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:26:35,339 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-03-20 08:26:35,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:26:35,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-03-20 08:26:35,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1501, Invalid=2159, Unknown=0, NotChecked=0, Total=3660 [2022-03-20 08:26:35,340 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) [2022-03-20 08:26:36,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:26:36,757 INFO L93 Difference]: Finished difference Result 502 states and 517 transitions. [2022-03-20 08:26:36,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-03-20 08:26:36,757 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 [2022-03-20 08:26:36,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:26:36,759 INFO L225 Difference]: With dead ends: 502 [2022-03-20 08:26:36,759 INFO L226 Difference]: Without dead ends: 500 [2022-03-20 08:26:36,761 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 [2022-03-20 08:26:36,761 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 [2022-03-20 08:26:36,761 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] [2022-03-20 08:26:36,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2022-03-20 08:26:36,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 495. [2022-03-20 08:26:36,823 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) [2022-03-20 08:26:36,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 509 transitions. [2022-03-20 08:26:36,824 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 509 transitions. Word has length 520 [2022-03-20 08:26:36,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:26:36,824 INFO L478 AbstractCegarLoop]: Abstraction has 495 states and 509 transitions. [2022-03-20 08:26:36,824 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) [2022-03-20 08:26:36,824 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 509 transitions. [2022-03-20 08:26:36,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2022-03-20 08:26:36,826 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:26:36,827 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] [2022-03-20 08:26:36,845 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2022-03-20 08:26:37,031 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 [2022-03-20 08:26:37,031 INFO L403 AbstractCegarLoop]: === Iteration 64 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:26:37,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:26:37,032 INFO L85 PathProgramCache]: Analyzing trace with hash 518560222, now seen corresponding path program 61 times [2022-03-20 08:26:37,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:26:37,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524014727] [2022-03-20 08:26:37,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:26:37,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:26:37,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:39,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:26:39,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:39,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-03-20 08:26:39,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:39,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-03-20 08:26:39,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:39,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-03-20 08:26:39,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:39,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-03-20 08:26:39,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:39,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-03-20 08:26:39,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:39,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-03-20 08:26:39,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:39,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-03-20 08:26:39,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:39,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-03-20 08:26:39,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:39,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-03-20 08:26:39,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:39,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-03-20 08:26:39,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:39,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-03-20 08:26:39,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:39,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-03-20 08:26:39,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:39,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-03-20 08:26:39,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:39,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-03-20 08:26:39,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:39,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-03-20 08:26:39,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:39,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-03-20 08:26:39,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:39,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-03-20 08:26:39,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:39,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-03-20 08:26:39,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:39,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-03-20 08:26:39,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:39,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-03-20 08:26:39,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:39,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-03-20 08:26:39,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:39,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-03-20 08:26:39,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:39,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-03-20 08:26:39,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:39,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-03-20 08:26:39,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:39,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-03-20 08:26:39,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:39,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-03-20 08:26:39,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:39,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-03-20 08:26:39,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:39,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-03-20 08:26:39,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:39,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-03-20 08:26:39,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:39,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-03-20 08:26:39,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:39,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-03-20 08:26:39,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:39,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-03-20 08:26:39,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:39,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-03-20 08:26:39,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:39,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-03-20 08:26:39,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:39,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-03-20 08:26:39,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:39,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-03-20 08:26:39,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:39,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-03-20 08:26:39,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:39,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-03-20 08:26:39,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:39,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2022-03-20 08:26:39,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:39,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2022-03-20 08:26:39,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:39,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2022-03-20 08:26:39,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:39,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2022-03-20 08:26:39,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:39,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2022-03-20 08:26:39,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:39,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2022-03-20 08:26:39,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:39,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2022-03-20 08:26:39,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:39,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2022-03-20 08:26:39,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:39,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2022-03-20 08:26:39,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:39,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 492 [2022-03-20 08:26:39,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:39,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 500 [2022-03-20 08:26:39,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:39,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2022-03-20 08:26:39,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:39,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2022-03-20 08:26:39,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:39,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 524 [2022-03-20 08:26:39,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:39,697 INFO L134 CoverageAnalysis]: Checked inductivity of 13468 backedges. 5359 proven. 2805 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2022-03-20 08:26:39,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:26:39,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524014727] [2022-03-20 08:26:39,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524014727] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:26:39,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515528506] [2022-03-20 08:26:39,697 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-20 08:26:39,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:26:39,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:26:39,699 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) [2022-03-20 08:26:39,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-03-20 08:26:39,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:39,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 1462 conjuncts, 106 conjunts are in the unsatisfiable core [2022-03-20 08:26:39,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:26:43,668 INFO L134 CoverageAnalysis]: Checked inductivity of 13468 backedges. 5712 proven. 2652 refuted. 0 times theorem prover too weak. 5104 trivial. 0 not checked. [2022-03-20 08:26:43,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:26:44,355 INFO L134 CoverageAnalysis]: Checked inductivity of 13468 backedges. 5510 proven. 2652 refuted. 0 times theorem prover too weak. 5306 trivial. 0 not checked. [2022-03-20 08:26:44,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515528506] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:26:44,355 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:26:44,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 106, 106] total 162 [2022-03-20 08:26:44,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142280422] [2022-03-20 08:26:44,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:26:44,356 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 162 states [2022-03-20 08:26:44,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:26:44,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 162 interpolants. [2022-03-20 08:26:44,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5783, Invalid=20299, Unknown=0, NotChecked=0, Total=26082 [2022-03-20 08:26:44,359 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) [2022-03-20 08:26:49,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:26:49,004 INFO L93 Difference]: Finished difference Result 926 states and 1096 transitions. [2022-03-20 08:26:49,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2022-03-20 08:26:49,005 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 [2022-03-20 08:26:49,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:26:49,007 INFO L225 Difference]: With dead ends: 926 [2022-03-20 08:26:49,007 INFO L226 Difference]: Without dead ends: 705 [2022-03-20 08:26:49,011 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 [2022-03-20 08:26:49,011 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 [2022-03-20 08:26:49,011 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] [2022-03-20 08:26:49,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2022-03-20 08:26:49,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 497. [2022-03-20 08:26:49,049 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) [2022-03-20 08:26:49,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 511 transitions. [2022-03-20 08:26:49,050 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 511 transitions. Word has length 536 [2022-03-20 08:26:49,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:26:49,050 INFO L478 AbstractCegarLoop]: Abstraction has 497 states and 511 transitions. [2022-03-20 08:26:49,051 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) [2022-03-20 08:26:49,051 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 511 transitions. [2022-03-20 08:26:49,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 539 [2022-03-20 08:26:49,053 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:26:49,053 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] [2022-03-20 08:26:49,070 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2022-03-20 08:26:49,253 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 [2022-03-20 08:26:49,254 INFO L403 AbstractCegarLoop]: === Iteration 65 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:26:49,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:26:49,254 INFO L85 PathProgramCache]: Analyzing trace with hash -286902335, now seen corresponding path program 62 times [2022-03-20 08:26:49,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:26:49,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560247382] [2022-03-20 08:26:49,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:26:49,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:26:49,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:51,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:26:51,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:51,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-03-20 08:26:51,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:51,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-03-20 08:26:51,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:51,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-03-20 08:26:51,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:51,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-03-20 08:26:51,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:51,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-03-20 08:26:51,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:51,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-03-20 08:26:51,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:51,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-03-20 08:26:51,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:51,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-03-20 08:26:51,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:51,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-03-20 08:26:51,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:51,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-03-20 08:26:51,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:51,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-03-20 08:26:51,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:51,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-03-20 08:26:51,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:51,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-03-20 08:26:51,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:51,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-03-20 08:26:51,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:51,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-03-20 08:26:51,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:51,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-03-20 08:26:51,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:51,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-03-20 08:26:51,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:51,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-03-20 08:26:51,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:51,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-03-20 08:26:51,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:51,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-03-20 08:26:51,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:51,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-03-20 08:26:51,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:51,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-03-20 08:26:51,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:51,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-03-20 08:26:51,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:51,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-03-20 08:26:51,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:51,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-03-20 08:26:51,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:51,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-03-20 08:26:51,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:51,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-03-20 08:26:51,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:51,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-03-20 08:26:51,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:51,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-03-20 08:26:51,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:51,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-03-20 08:26:51,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:51,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-03-20 08:26:51,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:51,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-03-20 08:26:51,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:51,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-03-20 08:26:51,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:51,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-03-20 08:26:51,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:51,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-03-20 08:26:51,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:51,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-03-20 08:26:51,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:51,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-03-20 08:26:51,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:51,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-03-20 08:26:51,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:51,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-03-20 08:26:51,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:51,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-03-20 08:26:51,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:51,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-03-20 08:26:51,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:51,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2022-03-20 08:26:51,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:51,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2022-03-20 08:26:51,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:51,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2022-03-20 08:26:51,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:51,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2022-03-20 08:26:51,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:51,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2022-03-20 08:26:51,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:51,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2022-03-20 08:26:51,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:51,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2022-03-20 08:26:51,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:51,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2022-03-20 08:26:51,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:51,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 510 [2022-03-20 08:26:51,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:51,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 518 [2022-03-20 08:26:51,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:51,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2022-03-20 08:26:51,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:26:51,981 INFO L134 CoverageAnalysis]: Checked inductivity of 13572 backedges. 5359 proven. 2909 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2022-03-20 08:26:51,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:26:51,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560247382] [2022-03-20 08:26:51,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560247382] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:26:51,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731458658] [2022-03-20 08:26:51,981 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 08:26:51,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:26:51,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:26:51,982 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) [2022-03-20 08:26:51,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-03-20 08:26:52,131 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 08:26:52,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 08:26:52,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 1472 conjuncts, 108 conjunts are in the unsatisfiable core [2022-03-20 08:26:52,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:26:55,197 INFO L134 CoverageAnalysis]: Checked inductivity of 13572 backedges. 2860 proven. 5408 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2022-03-20 08:26:55,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:26:55,933 INFO L134 CoverageAnalysis]: Checked inductivity of 13572 backedges. 2860 proven. 5408 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2022-03-20 08:26:55,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731458658] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:26:55,933 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:26:55,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 57, 57] total 164 [2022-03-20 08:26:55,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656255915] [2022-03-20 08:26:55,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:26:55,934 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 164 states [2022-03-20 08:26:55,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:26:55,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2022-03-20 08:26:55,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4407, Invalid=22325, Unknown=0, NotChecked=0, Total=26732 [2022-03-20 08:26:55,937 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) [2022-03-20 08:27:04,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:27:04,293 INFO L93 Difference]: Finished difference Result 939 states and 1113 transitions. [2022-03-20 08:27:04,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 216 states. [2022-03-20 08:27:04,294 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 [2022-03-20 08:27:04,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:27:04,296 INFO L225 Difference]: With dead ends: 939 [2022-03-20 08:27:04,296 INFO L226 Difference]: Without dead ends: 720 [2022-03-20 08:27:04,305 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 [2022-03-20 08:27:04,305 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 [2022-03-20 08:27:04,305 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] [2022-03-20 08:27:04,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2022-03-20 08:27:04,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 507. [2022-03-20 08:27:04,343 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) [2022-03-20 08:27:04,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 521 transitions. [2022-03-20 08:27:04,344 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 521 transitions. Word has length 538 [2022-03-20 08:27:04,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:27:04,344 INFO L478 AbstractCegarLoop]: Abstraction has 507 states and 521 transitions. [2022-03-20 08:27:04,344 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) [2022-03-20 08:27:04,345 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 521 transitions. [2022-03-20 08:27:04,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2022-03-20 08:27:04,347 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:27:04,347 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] [2022-03-20 08:27:04,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2022-03-20 08:27:04,558 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 [2022-03-20 08:27:04,558 INFO L403 AbstractCegarLoop]: === Iteration 66 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:27:04,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:27:04,558 INFO L85 PathProgramCache]: Analyzing trace with hash 844403576, now seen corresponding path program 63 times [2022-03-20 08:27:04,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:27:04,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706980051] [2022-03-20 08:27:04,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:27:04,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:27:04,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:07,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:27:07,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:07,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-03-20 08:27:07,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:07,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-03-20 08:27:07,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:07,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-03-20 08:27:07,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:07,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-03-20 08:27:07,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:07,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-03-20 08:27:07,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:07,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-03-20 08:27:07,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:07,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-03-20 08:27:07,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:07,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-03-20 08:27:07,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:07,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-03-20 08:27:07,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:07,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-03-20 08:27:07,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:07,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-03-20 08:27:07,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:07,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-03-20 08:27:07,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:07,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-03-20 08:27:07,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:07,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-03-20 08:27:07,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:07,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-03-20 08:27:07,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:07,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-03-20 08:27:07,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:07,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-03-20 08:27:07,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:07,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-03-20 08:27:07,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:07,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-03-20 08:27:07,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:07,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-03-20 08:27:07,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:07,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-03-20 08:27:07,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:07,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-03-20 08:27:07,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:07,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-03-20 08:27:07,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:07,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-03-20 08:27:07,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:07,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-03-20 08:27:07,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:07,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-03-20 08:27:07,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:07,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-03-20 08:27:07,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:07,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-03-20 08:27:07,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:07,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-03-20 08:27:07,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:07,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-03-20 08:27:07,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:07,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-03-20 08:27:07,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:07,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-03-20 08:27:07,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:07,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-03-20 08:27:07,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:07,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-03-20 08:27:07,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:07,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-03-20 08:27:07,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:07,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-03-20 08:27:07,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:07,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-03-20 08:27:07,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:07,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2022-03-20 08:27:07,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:07,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2022-03-20 08:27:07,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:07,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2022-03-20 08:27:07,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:07,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2022-03-20 08:27:07,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:07,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2022-03-20 08:27:07,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:07,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2022-03-20 08:27:07,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:07,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2022-03-20 08:27:07,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:07,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2022-03-20 08:27:07,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:07,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2022-03-20 08:27:07,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:07,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2022-03-20 08:27:07,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:07,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2022-03-20 08:27:07,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:07,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2022-03-20 08:27:07,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:07,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 512 [2022-03-20 08:27:07,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:07,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 520 [2022-03-20 08:27:07,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:07,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 528 [2022-03-20 08:27:07,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:07,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 536 [2022-03-20 08:27:07,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:07,373 INFO L134 CoverageAnalysis]: Checked inductivity of 14098 backedges. 5568 proven. 3018 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2022-03-20 08:27:07,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:27:07,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706980051] [2022-03-20 08:27:07,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706980051] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:27:07,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650101420] [2022-03-20 08:27:07,373 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-20 08:27:07,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:27:07,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:27:07,374 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) [2022-03-20 08:27:07,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-03-20 08:27:07,654 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 54 check-sat command(s) [2022-03-20 08:27:07,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 08:27:07,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 1499 conjuncts, 110 conjunts are in the unsatisfiable core [2022-03-20 08:27:07,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:27:10,803 INFO L134 CoverageAnalysis]: Checked inductivity of 14098 backedges. 2968 proven. 5618 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2022-03-20 08:27:10,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:27:11,548 INFO L134 CoverageAnalysis]: Checked inductivity of 14098 backedges. 2968 proven. 5618 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2022-03-20 08:27:11,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650101420] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:27:11,548 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:27:11,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 58, 58] total 167 [2022-03-20 08:27:11,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611457837] [2022-03-20 08:27:11,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:27:11,549 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 167 states [2022-03-20 08:27:11,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:27:11,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 167 interpolants. [2022-03-20 08:27:11,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4571, Invalid=23151, Unknown=0, NotChecked=0, Total=27722 [2022-03-20 08:27:11,551 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) [2022-03-20 08:27:20,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:27:20,319 INFO L93 Difference]: Finished difference Result 957 states and 1134 transitions. [2022-03-20 08:27:20,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 220 states. [2022-03-20 08:27:20,319 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 [2022-03-20 08:27:20,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:27:20,321 INFO L225 Difference]: With dead ends: 957 [2022-03-20 08:27:20,321 INFO L226 Difference]: Without dead ends: 734 [2022-03-20 08:27:20,328 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1586 GetRequests, 1203 SyntacticMatches, 1 SemanticMatches, 382 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51991 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=24419, Invalid=122653, Unknown=0, NotChecked=0, Total=147072 [2022-03-20 08:27:20,328 INFO L913 BasicCegarLoop]: 171 mSDtfsCounter, 2022 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 6767 mSolverCounterSat, 2004 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s 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, 2.6s IncrementalHoareTripleChecker+Time [2022-03-20 08:27:20,328 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2023 Valid, 253 Invalid, 8771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2004 Valid, 6767 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-03-20 08:27:20,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2022-03-20 08:27:20,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 517. [2022-03-20 08:27:20,369 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) [2022-03-20 08:27:20,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 531 transitions. [2022-03-20 08:27:20,370 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 531 transitions. Word has length 548 [2022-03-20 08:27:20,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:27:20,370 INFO L478 AbstractCegarLoop]: Abstraction has 517 states and 531 transitions. [2022-03-20 08:27:20,370 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) [2022-03-20 08:27:20,370 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 531 transitions. [2022-03-20 08:27:20,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 559 [2022-03-20 08:27:20,373 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:27:20,373 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] [2022-03-20 08:27:20,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2022-03-20 08:27:20,573 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 [2022-03-20 08:27:20,574 INFO L403 AbstractCegarLoop]: === Iteration 67 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:27:20,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:27:20,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1638545519, now seen corresponding path program 64 times [2022-03-20 08:27:20,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:27:20,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625278758] [2022-03-20 08:27:20,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:27:20,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:27:20,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:23,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:27:23,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:23,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-03-20 08:27:23,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:23,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-03-20 08:27:23,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:23,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-03-20 08:27:23,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:23,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-03-20 08:27:23,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:23,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-03-20 08:27:23,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:23,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-03-20 08:27:23,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:23,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-03-20 08:27:23,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:23,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-03-20 08:27:23,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:23,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-03-20 08:27:23,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:23,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-03-20 08:27:23,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:23,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-03-20 08:27:23,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:23,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-03-20 08:27:23,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:23,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-03-20 08:27:23,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:23,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-03-20 08:27:23,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:23,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-03-20 08:27:23,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:23,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-03-20 08:27:23,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:23,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-03-20 08:27:23,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:23,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-03-20 08:27:23,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:23,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-03-20 08:27:23,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:23,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-03-20 08:27:23,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:23,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-03-20 08:27:23,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:23,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-03-20 08:27:23,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:23,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-03-20 08:27:23,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:23,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-03-20 08:27:23,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:23,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-03-20 08:27:23,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:23,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-03-20 08:27:23,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:23,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-03-20 08:27:23,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:23,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-03-20 08:27:23,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:23,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-03-20 08:27:23,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:23,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-03-20 08:27:23,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:23,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-03-20 08:27:23,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:23,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-03-20 08:27:23,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:23,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-03-20 08:27:23,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:23,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-03-20 08:27:23,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:23,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-03-20 08:27:23,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:23,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-03-20 08:27:23,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:23,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-03-20 08:27:23,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:23,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-03-20 08:27:23,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:23,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-03-20 08:27:23,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:23,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-03-20 08:27:23,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:23,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2022-03-20 08:27:23,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:23,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2022-03-20 08:27:23,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:23,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2022-03-20 08:27:23,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:23,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2022-03-20 08:27:23,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:23,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2022-03-20 08:27:23,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:23,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2022-03-20 08:27:23,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:23,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2022-03-20 08:27:23,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:23,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2022-03-20 08:27:23,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:23,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2022-03-20 08:27:23,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:23,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2022-03-20 08:27:23,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:23,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 522 [2022-03-20 08:27:23,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:23,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 530 [2022-03-20 08:27:23,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:23,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2022-03-20 08:27:23,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:23,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 546 [2022-03-20 08:27:23,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:23,457 INFO L134 CoverageAnalysis]: Checked inductivity of 14634 backedges. 5781 proven. 3129 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2022-03-20 08:27:23,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:27:23,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625278758] [2022-03-20 08:27:23,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625278758] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:27:23,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610189343] [2022-03-20 08:27:23,458 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-20 08:27:23,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:27:23,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:27:23,459 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) [2022-03-20 08:27:23,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-03-20 08:27:23,623 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-20 08:27:23,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 08:27:23,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 1526 conjuncts, 112 conjunts are in the unsatisfiable core [2022-03-20 08:27:23,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:27:26,921 INFO L134 CoverageAnalysis]: Checked inductivity of 14634 backedges. 3078 proven. 5832 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2022-03-20 08:27:26,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:27:27,682 INFO L134 CoverageAnalysis]: Checked inductivity of 14634 backedges. 3078 proven. 5832 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2022-03-20 08:27:27,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610189343] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:27:27,682 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:27:27,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 59, 59] total 170 [2022-03-20 08:27:27,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604931616] [2022-03-20 08:27:27,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:27:27,683 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 170 states [2022-03-20 08:27:27,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:27:27,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 170 interpolants. [2022-03-20 08:27:27,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4738, Invalid=23992, Unknown=0, NotChecked=0, Total=28730 [2022-03-20 08:27:27,686 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) [2022-03-20 08:27:36,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:27:36,702 INFO L93 Difference]: Finished difference Result 975 states and 1155 transitions. [2022-03-20 08:27:36,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 224 states. [2022-03-20 08:27:36,702 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 [2022-03-20 08:27:36,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:27:36,704 INFO L225 Difference]: With dead ends: 975 [2022-03-20 08:27:36,704 INFO L226 Difference]: Without dead ends: 748 [2022-03-20 08:27:36,711 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1615 GetRequests, 1225 SyntacticMatches, 1 SemanticMatches, 389 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53944 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=25311, Invalid=127179, Unknown=0, NotChecked=0, Total=152490 [2022-03-20 08:27:36,712 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, 2.6s IncrementalHoareTripleChecker+Time [2022-03-20 08:27:36,712 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2162 Valid, 256 Invalid, 8621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1692 Valid, 6929 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-03-20 08:27:36,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2022-03-20 08:27:36,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 527. [2022-03-20 08:27:36,752 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) [2022-03-20 08:27:36,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 541 transitions. [2022-03-20 08:27:36,752 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 541 transitions. Word has length 558 [2022-03-20 08:27:36,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:27:36,753 INFO L478 AbstractCegarLoop]: Abstraction has 527 states and 541 transitions. [2022-03-20 08:27:36,753 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) [2022-03-20 08:27:36,753 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 541 transitions. [2022-03-20 08:27:36,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 569 [2022-03-20 08:27:36,755 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:27:36,756 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] [2022-03-20 08:27:36,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2022-03-20 08:27:36,971 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 [2022-03-20 08:27:36,971 INFO L403 AbstractCegarLoop]: === Iteration 68 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:27:36,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:27:36,972 INFO L85 PathProgramCache]: Analyzing trace with hash 736794278, now seen corresponding path program 65 times [2022-03-20 08:27:36,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:27:36,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659749643] [2022-03-20 08:27:36,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:27:36,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:27:37,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:39,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:27:39,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:39,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-03-20 08:27:39,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:39,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-03-20 08:27:39,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:39,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-03-20 08:27:39,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:39,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-03-20 08:27:39,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:39,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-03-20 08:27:39,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:39,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-03-20 08:27:39,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:39,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-03-20 08:27:39,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:39,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-03-20 08:27:39,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:39,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-03-20 08:27:39,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:39,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-03-20 08:27:39,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:39,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-03-20 08:27:39,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:39,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-03-20 08:27:39,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:39,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-03-20 08:27:39,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:39,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-03-20 08:27:39,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:39,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-03-20 08:27:39,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:39,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-03-20 08:27:39,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:39,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-03-20 08:27:39,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:39,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-03-20 08:27:39,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:39,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-03-20 08:27:39,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:39,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-03-20 08:27:39,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:39,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-03-20 08:27:39,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:39,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-03-20 08:27:39,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:39,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-03-20 08:27:39,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:39,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-03-20 08:27:39,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:39,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-03-20 08:27:39,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:39,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-03-20 08:27:39,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:39,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-03-20 08:27:39,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:39,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-03-20 08:27:39,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:39,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-03-20 08:27:39,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:39,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-03-20 08:27:39,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:39,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-03-20 08:27:39,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:39,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-03-20 08:27:39,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:39,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-03-20 08:27:39,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:39,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-03-20 08:27:39,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:39,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-03-20 08:27:39,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:39,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-03-20 08:27:39,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:39,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-03-20 08:27:39,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:39,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2022-03-20 08:27:39,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:39,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2022-03-20 08:27:39,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:39,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2022-03-20 08:27:39,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:39,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2022-03-20 08:27:39,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:39,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2022-03-20 08:27:39,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:39,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2022-03-20 08:27:39,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:39,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2022-03-20 08:27:39,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:39,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2022-03-20 08:27:39,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:39,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2022-03-20 08:27:39,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:39,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 492 [2022-03-20 08:27:39,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:39,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 500 [2022-03-20 08:27:39,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:39,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2022-03-20 08:27:39,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:39,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2022-03-20 08:27:39,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:39,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 524 [2022-03-20 08:27:39,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:39,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 532 [2022-03-20 08:27:39,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:39,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2022-03-20 08:27:39,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:39,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 548 [2022-03-20 08:27:39,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:39,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 556 [2022-03-20 08:27:39,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:39,968 INFO L134 CoverageAnalysis]: Checked inductivity of 15180 backedges. 5998 proven. 3242 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2022-03-20 08:27:39,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:27:39,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659749643] [2022-03-20 08:27:39,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659749643] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:27:39,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108910394] [2022-03-20 08:27:39,969 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-20 08:27:39,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:27:39,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:27:39,970 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) [2022-03-20 08:27:39,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-03-20 08:27:40,257 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 56 check-sat command(s) [2022-03-20 08:27:40,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 08:27:40,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 1553 conjuncts, 114 conjunts are in the unsatisfiable core [2022-03-20 08:27:40,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:27:44,568 INFO L134 CoverageAnalysis]: Checked inductivity of 15180 backedges. 6160 proven. 3080 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2022-03-20 08:27:44,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:27:45,304 INFO L134 CoverageAnalysis]: Checked inductivity of 15180 backedges. 6160 proven. 3080 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2022-03-20 08:27:45,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2108910394] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:27:45,305 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:27:45,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [115, 114, 114] total 173 [2022-03-20 08:27:45,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558981943] [2022-03-20 08:27:45,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:27:45,306 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 173 states [2022-03-20 08:27:45,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:27:45,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 173 interpolants. [2022-03-20 08:27:45,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6617, Invalid=23139, Unknown=0, NotChecked=0, Total=29756 [2022-03-20 08:27:45,309 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) [2022-03-20 08:27:50,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:27:50,560 INFO L93 Difference]: Finished difference Result 984 states and 1166 transitions. [2022-03-20 08:27:50,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2022-03-20 08:27:50,561 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 [2022-03-20 08:27:50,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:27:50,563 INFO L225 Difference]: With dead ends: 984 [2022-03-20 08:27:50,563 INFO L226 Difference]: Without dead ends: 753 [2022-03-20 08:27:50,568 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 [2022-03-20 08:27:50,569 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 [2022-03-20 08:27:50,569 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] [2022-03-20 08:27:50,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2022-03-20 08:27:50,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 529. [2022-03-20 08:27:50,611 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) [2022-03-20 08:27:50,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 543 transitions. [2022-03-20 08:27:50,611 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 543 transitions. Word has length 568 [2022-03-20 08:27:50,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:27:50,611 INFO L478 AbstractCegarLoop]: Abstraction has 529 states and 543 transitions. [2022-03-20 08:27:50,612 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) [2022-03-20 08:27:50,612 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 543 transitions. [2022-03-20 08:27:50,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 571 [2022-03-20 08:27:50,614 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:27:50,614 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] [2022-03-20 08:27:50,633 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2022-03-20 08:27:50,815 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 [2022-03-20 08:27:50,815 INFO L403 AbstractCegarLoop]: === Iteration 69 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:27:50,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:27:50,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1400903543, now seen corresponding path program 66 times [2022-03-20 08:27:50,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:27:50,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184941989] [2022-03-20 08:27:50,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:27:50,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:27:50,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:52,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:27:52,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:52,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-03-20 08:27:52,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:52,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-03-20 08:27:52,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:52,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-03-20 08:27:52,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:52,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-03-20 08:27:52,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:52,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-03-20 08:27:52,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:52,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-03-20 08:27:52,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:52,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-03-20 08:27:52,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:52,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-03-20 08:27:52,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:52,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-03-20 08:27:52,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:52,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-03-20 08:27:52,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:52,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-03-20 08:27:52,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:52,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-03-20 08:27:52,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:52,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-03-20 08:27:52,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:52,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-03-20 08:27:52,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:52,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-03-20 08:27:52,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:52,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-03-20 08:27:52,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:52,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-03-20 08:27:52,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:52,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-03-20 08:27:52,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:52,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-03-20 08:27:52,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:52,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-03-20 08:27:52,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:52,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-03-20 08:27:52,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:52,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-03-20 08:27:52,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:52,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-03-20 08:27:52,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:52,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-03-20 08:27:52,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:52,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-03-20 08:27:52,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:52,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-03-20 08:27:52,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:52,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-03-20 08:27:52,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:52,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-03-20 08:27:52,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:52,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-03-20 08:27:52,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:52,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-03-20 08:27:52,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:52,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-03-20 08:27:52,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:52,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-03-20 08:27:52,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:52,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-03-20 08:27:52,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:52,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-03-20 08:27:52,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:52,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-03-20 08:27:52,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:52,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-03-20 08:27:52,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:52,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-03-20 08:27:52,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:52,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-03-20 08:27:52,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:52,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-03-20 08:27:52,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:52,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-03-20 08:27:52,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:52,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2022-03-20 08:27:52,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:52,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2022-03-20 08:27:52,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:52,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2022-03-20 08:27:52,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:52,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2022-03-20 08:27:52,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:52,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2022-03-20 08:27:52,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:52,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2022-03-20 08:27:52,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:52,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2022-03-20 08:27:52,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:52,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2022-03-20 08:27:52,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:52,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 510 [2022-03-20 08:27:52,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:52,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 518 [2022-03-20 08:27:52,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:52,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2022-03-20 08:27:52,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:52,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 534 [2022-03-20 08:27:52,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:52,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 542 [2022-03-20 08:27:52,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:52,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 550 [2022-03-20 08:27:52,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:52,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 558 [2022-03-20 08:27:52,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:52,088 INFO L134 CoverageAnalysis]: Checked inductivity of 15292 backedges. 3190 proven. 6162 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2022-03-20 08:27:52,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:27:52,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184941989] [2022-03-20 08:27:52,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184941989] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:27:52,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222524410] [2022-03-20 08:27:52,088 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-20 08:27:52,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:27:52,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:27:52,090 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) [2022-03-20 08:27:52,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-03-20 08:27:52,419 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 57 check-sat command(s) [2022-03-20 08:27:52,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 08:27:52,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 1563 conjuncts, 115 conjunts are in the unsatisfiable core [2022-03-20 08:27:52,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:27:53,135 INFO L134 CoverageAnalysis]: Checked inductivity of 15292 backedges. 3302 proven. 6050 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2022-03-20 08:27:53,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:27:53,879 INFO L134 CoverageAnalysis]: Checked inductivity of 15292 backedges. 3302 proven. 6050 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2022-03-20 08:27:53,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222524410] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:27:53,879 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:27:53,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 61, 61] total 66 [2022-03-20 08:27:53,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007003448] [2022-03-20 08:27:53,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:27:53,880 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-03-20 08:27:53,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:27:53,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-03-20 08:27:53,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1786, Invalid=2504, Unknown=0, NotChecked=0, Total=4290 [2022-03-20 08:27:53,881 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) [2022-03-20 08:27:55,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:27:55,453 INFO L93 Difference]: Finished difference Result 548 states and 564 transitions. [2022-03-20 08:27:55,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-03-20 08:27:55,454 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 [2022-03-20 08:27:55,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:27:55,456 INFO L225 Difference]: With dead ends: 548 [2022-03-20 08:27:55,456 INFO L226 Difference]: Without dead ends: 546 [2022-03-20 08:27:55,458 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 [2022-03-20 08:27:55,458 INFO L913 BasicCegarLoop]: 77 mSDtfsCounter, 282 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 1630 mSolverCounterSat, 354 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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 [2022-03-20 08:27:55,458 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] [2022-03-20 08:27:55,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2022-03-20 08:27:55,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 541. [2022-03-20 08:27:55,499 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) [2022-03-20 08:27:55,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 556 transitions. [2022-03-20 08:27:55,500 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 556 transitions. Word has length 570 [2022-03-20 08:27:55,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:27:55,500 INFO L478 AbstractCegarLoop]: Abstraction has 541 states and 556 transitions. [2022-03-20 08:27:55,500 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) [2022-03-20 08:27:55,500 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 556 transitions. [2022-03-20 08:27:55,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2022-03-20 08:27:55,503 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:27:55,503 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] [2022-03-20 08:27:55,521 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2022-03-20 08:27:55,703 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 [2022-03-20 08:27:55,704 INFO L403 AbstractCegarLoop]: === Iteration 70 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:27:55,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:27:55,704 INFO L85 PathProgramCache]: Analyzing trace with hash 707100593, now seen corresponding path program 67 times [2022-03-20 08:27:55,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:27:55,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880415432] [2022-03-20 08:27:55,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:27:55,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:27:55,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:58,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:27:58,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:58,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-03-20 08:27:58,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:58,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-03-20 08:27:58,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:58,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-03-20 08:27:58,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:58,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-03-20 08:27:58,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:58,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-03-20 08:27:58,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:58,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-03-20 08:27:58,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:58,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-03-20 08:27:58,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:58,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-03-20 08:27:58,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:58,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-03-20 08:27:58,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:58,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-03-20 08:27:58,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:58,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-03-20 08:27:58,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:58,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-03-20 08:27:58,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:58,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-03-20 08:27:58,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:58,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-03-20 08:27:58,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:58,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-03-20 08:27:58,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:58,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-03-20 08:27:58,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:58,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-03-20 08:27:58,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:58,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-03-20 08:27:58,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:58,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-03-20 08:27:58,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:58,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-03-20 08:27:58,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:58,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-03-20 08:27:58,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:58,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-03-20 08:27:58,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:58,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-03-20 08:27:58,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:58,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-03-20 08:27:58,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:58,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-03-20 08:27:58,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:58,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-03-20 08:27:58,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:58,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-03-20 08:27:58,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:58,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-03-20 08:27:58,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:58,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-03-20 08:27:58,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:58,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-03-20 08:27:58,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:58,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-03-20 08:27:58,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:58,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-03-20 08:27:58,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:58,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-03-20 08:27:58,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:58,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-03-20 08:27:58,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:58,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-03-20 08:27:58,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:58,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-03-20 08:27:58,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:58,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-03-20 08:27:58,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:58,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-03-20 08:27:58,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:58,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-03-20 08:27:58,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:58,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-03-20 08:27:58,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:58,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2022-03-20 08:27:58,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:58,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2022-03-20 08:27:58,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:58,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2022-03-20 08:27:58,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:58,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2022-03-20 08:27:58,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:58,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2022-03-20 08:27:58,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:58,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2022-03-20 08:27:58,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:58,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2022-03-20 08:27:58,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:58,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2022-03-20 08:27:58,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:58,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 510 [2022-03-20 08:27:58,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:58,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 518 [2022-03-20 08:27:58,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:58,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2022-03-20 08:27:58,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:58,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 534 [2022-03-20 08:27:58,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:58,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 542 [2022-03-20 08:27:58,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:58,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 550 [2022-03-20 08:27:58,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:58,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 558 [2022-03-20 08:27:58,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:58,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 566 [2022-03-20 08:27:58,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:58,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 574 [2022-03-20 08:27:58,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:58,874 INFO L134 CoverageAnalysis]: Checked inductivity of 16188 backedges. 6444 proven. 3360 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2022-03-20 08:27:58,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:27:58,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880415432] [2022-03-20 08:27:58,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880415432] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:27:58,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605145442] [2022-03-20 08:27:58,874 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-20 08:27:58,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:27:58,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:27:58,876 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) [2022-03-20 08:27:58,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-03-20 08:27:59,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:27:59,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 1597 conjuncts, 116 conjunts are in the unsatisfiable core [2022-03-20 08:27:59,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:28:03,501 INFO L134 CoverageAnalysis]: Checked inductivity of 16188 backedges. 6832 proven. 3192 refuted. 0 times theorem prover too weak. 6164 trivial. 0 not checked. [2022-03-20 08:28:03,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:28:04,257 INFO L134 CoverageAnalysis]: Checked inductivity of 16188 backedges. 6610 proven. 3192 refuted. 0 times theorem prover too weak. 6386 trivial. 0 not checked. [2022-03-20 08:28:04,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605145442] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:28:04,258 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:28:04,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [118, 116, 116] total 177 [2022-03-20 08:28:04,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135410652] [2022-03-20 08:28:04,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:28:04,260 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 177 states [2022-03-20 08:28:04,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:28:04,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 177 interpolants. [2022-03-20 08:28:04,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6908, Invalid=24244, Unknown=0, NotChecked=0, Total=31152 [2022-03-20 08:28:04,263 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) [2022-03-20 08:28:10,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:28:10,040 INFO L93 Difference]: Finished difference Result 1012 states and 1198 transitions. [2022-03-20 08:28:10,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2022-03-20 08:28:10,041 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 [2022-03-20 08:28:10,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:28:10,043 INFO L225 Difference]: With dead ends: 1012 [2022-03-20 08:28:10,043 INFO L226 Difference]: Without dead ends: 771 [2022-03-20 08:28:10,048 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1575 GetRequests, 1286 SyntacticMatches, 0 SemanticMatches, 289 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23296 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=18652, Invalid=65738, Unknown=0, NotChecked=0, Total=84390 [2022-03-20 08:28:10,048 INFO L913 BasicCegarLoop]: 126 mSDtfsCounter, 1388 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 4308 mSolverCounterSat, 1033 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s 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, 1.7s IncrementalHoareTripleChecker+Time [2022-03-20 08:28:10,049 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1389 Valid, 213 Invalid, 5341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1033 Valid, 4308 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-03-20 08:28:10,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2022-03-20 08:28:10,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 543. [2022-03-20 08:28:10,092 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) [2022-03-20 08:28:10,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 558 transitions. [2022-03-20 08:28:10,093 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 558 transitions. Word has length 586 [2022-03-20 08:28:10,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:28:10,093 INFO L478 AbstractCegarLoop]: Abstraction has 543 states and 558 transitions. [2022-03-20 08:28:10,093 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) [2022-03-20 08:28:10,094 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 558 transitions. [2022-03-20 08:28:10,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 589 [2022-03-20 08:28:10,096 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:28:10,096 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] [2022-03-20 08:28:10,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2022-03-20 08:28:10,305 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 [2022-03-20 08:28:10,305 INFO L403 AbstractCegarLoop]: === Iteration 71 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:28:10,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:28:10,305 INFO L85 PathProgramCache]: Analyzing trace with hash -696434988, now seen corresponding path program 68 times [2022-03-20 08:28:10,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:28:10,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245504964] [2022-03-20 08:28:10,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:28:10,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:28:10,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:13,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:28:13,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:13,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-03-20 08:28:13,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:13,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-03-20 08:28:13,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:13,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-03-20 08:28:13,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:13,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-03-20 08:28:13,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:13,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-03-20 08:28:13,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:13,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-03-20 08:28:13,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:13,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-03-20 08:28:13,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:13,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-03-20 08:28:13,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:13,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-03-20 08:28:13,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:13,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-03-20 08:28:13,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:13,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-03-20 08:28:13,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:13,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-03-20 08:28:13,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:13,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-03-20 08:28:13,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:13,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-03-20 08:28:13,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:13,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-03-20 08:28:13,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:13,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-03-20 08:28:13,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:13,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-03-20 08:28:13,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:13,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-03-20 08:28:13,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:13,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-03-20 08:28:13,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:13,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-03-20 08:28:13,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:13,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-03-20 08:28:13,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:13,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-03-20 08:28:13,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:13,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-03-20 08:28:13,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:13,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-03-20 08:28:13,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:13,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-03-20 08:28:13,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:13,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-03-20 08:28:13,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:13,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-03-20 08:28:13,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:13,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-03-20 08:28:13,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:13,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-03-20 08:28:13,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:13,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-03-20 08:28:13,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:13,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-03-20 08:28:13,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:13,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-03-20 08:28:13,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:13,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-03-20 08:28:13,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:13,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-03-20 08:28:13,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:13,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-03-20 08:28:13,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:13,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-03-20 08:28:13,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:13,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2022-03-20 08:28:13,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:13,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2022-03-20 08:28:13,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:13,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2022-03-20 08:28:13,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:13,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2022-03-20 08:28:13,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:13,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2022-03-20 08:28:13,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:13,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2022-03-20 08:28:13,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:13,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2022-03-20 08:28:13,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:13,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2022-03-20 08:28:13,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:13,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2022-03-20 08:28:13,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:13,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2022-03-20 08:28:13,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:13,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2022-03-20 08:28:13,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:13,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2022-03-20 08:28:13,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:13,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 512 [2022-03-20 08:28:13,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:13,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 520 [2022-03-20 08:28:13,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:13,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 528 [2022-03-20 08:28:13,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:13,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 536 [2022-03-20 08:28:13,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:13,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 544 [2022-03-20 08:28:13,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:13,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 552 [2022-03-20 08:28:13,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:13,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 560 [2022-03-20 08:28:13,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:13,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2022-03-20 08:28:13,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:13,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 576 [2022-03-20 08:28:13,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:13,542 INFO L134 CoverageAnalysis]: Checked inductivity of 16302 backedges. 6444 proven. 3474 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2022-03-20 08:28:13,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:28:13,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245504964] [2022-03-20 08:28:13,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245504964] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:28:13,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398058371] [2022-03-20 08:28:13,542 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 08:28:13,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:28:13,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:28:13,543 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) [2022-03-20 08:28:13,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-03-20 08:28:13,716 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 08:28:13,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 08:28:13,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 1607 conjuncts, 118 conjunts are in the unsatisfiable core [2022-03-20 08:28:13,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:28:17,337 INFO L134 CoverageAnalysis]: Checked inductivity of 16302 backedges. 3420 proven. 6498 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2022-03-20 08:28:17,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:28:18,108 INFO L134 CoverageAnalysis]: Checked inductivity of 16302 backedges. 3420 proven. 6498 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2022-03-20 08:28:18,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398058371] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:28:18,108 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:28:18,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [119, 62, 62] total 179 [2022-03-20 08:28:18,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406673706] [2022-03-20 08:28:18,109 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:28:18,110 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 179 states [2022-03-20 08:28:18,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:28:18,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 179 interpolants. [2022-03-20 08:28:18,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5257, Invalid=26605, Unknown=0, NotChecked=0, Total=31862 [2022-03-20 08:28:18,112 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) [2022-03-20 08:28:27,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:28:27,918 INFO L93 Difference]: Finished difference Result 1025 states and 1215 transitions. [2022-03-20 08:28:27,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 236 states. [2022-03-20 08:28:27,919 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 [2022-03-20 08:28:27,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:28:27,921 INFO L225 Difference]: With dead ends: 1025 [2022-03-20 08:28:27,921 INFO L226 Difference]: Without dead ends: 786 [2022-03-20 08:28:27,929 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1702 GetRequests, 1291 SyntacticMatches, 1 SemanticMatches, 410 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60019 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=28083, Invalid=141249, Unknown=0, NotChecked=0, Total=169332 [2022-03-20 08:28:27,930 INFO L913 BasicCegarLoop]: 183 mSDtfsCounter, 1984 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 7344 mSolverCounterSat, 1753 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s 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, 2.7s IncrementalHoareTripleChecker+Time [2022-03-20 08:28:27,930 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1985 Valid, 275 Invalid, 9097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1753 Valid, 7344 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-03-20 08:28:27,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2022-03-20 08:28:27,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 553. [2022-03-20 08:28:27,974 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) [2022-03-20 08:28:27,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 568 transitions. [2022-03-20 08:28:27,975 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 568 transitions. Word has length 588 [2022-03-20 08:28:27,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:28:27,975 INFO L478 AbstractCegarLoop]: Abstraction has 553 states and 568 transitions. [2022-03-20 08:28:27,976 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) [2022-03-20 08:28:27,976 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 568 transitions. [2022-03-20 08:28:27,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 599 [2022-03-20 08:28:27,978 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:28:27,978 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] [2022-03-20 08:28:27,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2022-03-20 08:28:28,186 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 [2022-03-20 08:28:28,186 INFO L403 AbstractCegarLoop]: === Iteration 72 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:28:28,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:28:28,187 INFO L85 PathProgramCache]: Analyzing trace with hash -619026229, now seen corresponding path program 69 times [2022-03-20 08:28:28,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:28:28,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266338827] [2022-03-20 08:28:28,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:28:28,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:28:28,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:31,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:28:31,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:31,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-03-20 08:28:31,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:31,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-03-20 08:28:31,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:31,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-03-20 08:28:31,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:31,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-03-20 08:28:31,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:31,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-03-20 08:28:31,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:31,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-03-20 08:28:31,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:31,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-03-20 08:28:31,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:31,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-03-20 08:28:31,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:31,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-03-20 08:28:31,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:31,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-03-20 08:28:31,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:31,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-03-20 08:28:31,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:31,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-03-20 08:28:31,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:31,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-03-20 08:28:31,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:31,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-03-20 08:28:31,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:31,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-03-20 08:28:31,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:31,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-03-20 08:28:31,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:31,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-03-20 08:28:31,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:31,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-03-20 08:28:31,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:31,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-03-20 08:28:31,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:31,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-03-20 08:28:31,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:31,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-03-20 08:28:31,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:31,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-03-20 08:28:31,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:31,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-03-20 08:28:31,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:31,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-03-20 08:28:31,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:31,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-03-20 08:28:31,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:31,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-03-20 08:28:31,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:31,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-03-20 08:28:31,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:31,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-03-20 08:28:31,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:31,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-03-20 08:28:31,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:31,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-03-20 08:28:31,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:31,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-03-20 08:28:31,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:31,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-03-20 08:28:31,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:31,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-03-20 08:28:31,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:31,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-03-20 08:28:31,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:31,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-03-20 08:28:31,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:31,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-03-20 08:28:31,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:31,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-03-20 08:28:31,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:31,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-03-20 08:28:31,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:31,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-03-20 08:28:31,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:31,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2022-03-20 08:28:31,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:31,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2022-03-20 08:28:31,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:31,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2022-03-20 08:28:31,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:31,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2022-03-20 08:28:31,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:31,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2022-03-20 08:28:31,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:31,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2022-03-20 08:28:31,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:31,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2022-03-20 08:28:31,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:31,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2022-03-20 08:28:31,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:31,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2022-03-20 08:28:31,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:31,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2022-03-20 08:28:31,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:31,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 522 [2022-03-20 08:28:31,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:31,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 530 [2022-03-20 08:28:31,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:31,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2022-03-20 08:28:31,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:31,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 546 [2022-03-20 08:28:31,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:31,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2022-03-20 08:28:31,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:31,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 562 [2022-03-20 08:28:31,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:31,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 570 [2022-03-20 08:28:31,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:31,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 578 [2022-03-20 08:28:31,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:31,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 586 [2022-03-20 08:28:31,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:31,535 INFO L134 CoverageAnalysis]: Checked inductivity of 16878 backedges. 6673 proven. 3593 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2022-03-20 08:28:31,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:28:31,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266338827] [2022-03-20 08:28:31,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266338827] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:28:31,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890416455] [2022-03-20 08:28:31,535 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-20 08:28:31,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:28:31,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:28:31,537 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) [2022-03-20 08:28:31,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-03-20 08:28:31,833 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 59 check-sat command(s) [2022-03-20 08:28:31,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 08:28:31,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 1634 conjuncts, 120 conjunts are in the unsatisfiable core [2022-03-20 08:28:31,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:28:35,556 INFO L134 CoverageAnalysis]: Checked inductivity of 16878 backedges. 3538 proven. 6728 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2022-03-20 08:28:35,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:28:36,363 INFO L134 CoverageAnalysis]: Checked inductivity of 16878 backedges. 3538 proven. 6728 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2022-03-20 08:28:36,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890416455] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:28:36,364 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:28:36,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [121, 63, 63] total 182 [2022-03-20 08:28:36,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443447111] [2022-03-20 08:28:36,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:28:36,365 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 182 states [2022-03-20 08:28:36,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:28:36,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 182 interpolants. [2022-03-20 08:28:36,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5436, Invalid=27506, Unknown=0, NotChecked=0, Total=32942 [2022-03-20 08:28:36,367 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) [2022-03-20 08:28:46,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:28:46,459 INFO L93 Difference]: Finished difference Result 1043 states and 1236 transitions. [2022-03-20 08:28:46,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 240 states. [2022-03-20 08:28:46,460 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 [2022-03-20 08:28:46,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:28:46,462 INFO L225 Difference]: With dead ends: 1043 [2022-03-20 08:28:46,462 INFO L226 Difference]: Without dead ends: 800 [2022-03-20 08:28:46,473 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1731 GetRequests, 1313 SyntacticMatches, 1 SemanticMatches, 417 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62116 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=29039, Invalid=146103, Unknown=0, NotChecked=0, Total=175142 [2022-03-20 08:28:46,473 INFO L913 BasicCegarLoop]: 186 mSDtfsCounter, 2043 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 7655 mSolverCounterSat, 1617 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s 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, 2.7s IncrementalHoareTripleChecker+Time [2022-03-20 08:28:46,473 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2044 Valid, 273 Invalid, 9272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1617 Valid, 7655 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-03-20 08:28:46,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2022-03-20 08:28:46,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 563. [2022-03-20 08:28:46,549 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) [2022-03-20 08:28:46,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 578 transitions. [2022-03-20 08:28:46,552 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 578 transitions. Word has length 598 [2022-03-20 08:28:46,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:28:46,552 INFO L478 AbstractCegarLoop]: Abstraction has 563 states and 578 transitions. [2022-03-20 08:28:46,552 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) [2022-03-20 08:28:46,552 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 578 transitions. [2022-03-20 08:28:46,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 609 [2022-03-20 08:28:46,555 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:28:46,555 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] [2022-03-20 08:28:46,574 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2022-03-20 08:28:46,767 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 [2022-03-20 08:28:46,767 INFO L403 AbstractCegarLoop]: === Iteration 73 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:28:46,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:28:46,768 INFO L85 PathProgramCache]: Analyzing trace with hash -2127033342, now seen corresponding path program 70 times [2022-03-20 08:28:46,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:28:46,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478893285] [2022-03-20 08:28:46,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:28:46,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:28:46,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:50,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:28:50,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:50,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-03-20 08:28:50,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:50,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-03-20 08:28:50,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:50,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-03-20 08:28:50,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:50,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-03-20 08:28:50,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:50,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-03-20 08:28:50,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:50,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-03-20 08:28:50,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:50,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-03-20 08:28:50,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:50,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-03-20 08:28:50,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:50,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-03-20 08:28:50,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:50,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-03-20 08:28:50,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:50,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-03-20 08:28:50,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:50,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-03-20 08:28:50,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:50,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-03-20 08:28:50,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:50,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-03-20 08:28:50,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:50,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-03-20 08:28:50,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:50,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-03-20 08:28:50,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:50,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-03-20 08:28:50,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:50,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-03-20 08:28:50,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:50,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-03-20 08:28:50,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:50,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-03-20 08:28:50,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:50,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-03-20 08:28:50,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:50,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-03-20 08:28:50,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:50,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-03-20 08:28:50,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:50,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-03-20 08:28:50,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:50,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-03-20 08:28:50,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:50,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-03-20 08:28:50,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:50,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-03-20 08:28:50,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:50,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-03-20 08:28:50,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:50,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-03-20 08:28:50,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:50,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-03-20 08:28:50,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:50,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-03-20 08:28:50,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:50,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-03-20 08:28:50,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:50,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-03-20 08:28:50,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:50,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-03-20 08:28:50,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:50,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-03-20 08:28:50,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:50,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-03-20 08:28:50,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:50,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2022-03-20 08:28:50,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:50,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2022-03-20 08:28:50,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:50,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2022-03-20 08:28:50,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:50,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2022-03-20 08:28:50,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:50,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2022-03-20 08:28:50,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:50,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2022-03-20 08:28:50,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:50,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2022-03-20 08:28:50,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:50,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2022-03-20 08:28:50,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:50,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2022-03-20 08:28:50,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:50,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 492 [2022-03-20 08:28:50,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:50,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 500 [2022-03-20 08:28:50,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:50,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2022-03-20 08:28:50,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:50,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2022-03-20 08:28:50,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:50,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 524 [2022-03-20 08:28:50,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:50,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 532 [2022-03-20 08:28:50,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:50,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2022-03-20 08:28:50,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:50,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 548 [2022-03-20 08:28:50,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:50,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 556 [2022-03-20 08:28:50,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:50,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 564 [2022-03-20 08:28:50,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:50,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 572 [2022-03-20 08:28:50,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:50,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 580 [2022-03-20 08:28:50,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:50,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 588 [2022-03-20 08:28:50,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:50,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 596 [2022-03-20 08:28:50,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:28:50,168 INFO L134 CoverageAnalysis]: Checked inductivity of 17464 backedges. 6906 proven. 3714 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2022-03-20 08:28:50,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:28:50,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478893285] [2022-03-20 08:28:50,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478893285] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:28:50,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197020609] [2022-03-20 08:28:50,168 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-20 08:28:50,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:28:50,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:28:50,169 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) [2022-03-20 08:28:50,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-03-20 08:28:50,358 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-20 08:28:50,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 08:28:50,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 1661 conjuncts, 122 conjunts are in the unsatisfiable core [2022-03-20 08:28:50,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:28:54,195 INFO L134 CoverageAnalysis]: Checked inductivity of 17464 backedges. 3658 proven. 6962 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2022-03-20 08:28:54,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:28:55,010 INFO L134 CoverageAnalysis]: Checked inductivity of 17464 backedges. 3658 proven. 6962 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2022-03-20 08:28:55,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197020609] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:28:55,010 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:28:55,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [123, 64, 64] total 185 [2022-03-20 08:28:55,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837863356] [2022-03-20 08:28:55,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:28:55,011 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 185 states [2022-03-20 08:28:55,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:28:55,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 185 interpolants. [2022-03-20 08:28:55,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5618, Invalid=28422, Unknown=0, NotChecked=0, Total=34040 [2022-03-20 08:28:55,032 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) [2022-03-20 08:29:05,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:29:05,667 INFO L93 Difference]: Finished difference Result 1061 states and 1257 transitions. [2022-03-20 08:29:05,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 244 states. [2022-03-20 08:29:05,668 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 [2022-03-20 08:29:05,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:29:05,670 INFO L225 Difference]: With dead ends: 1061 [2022-03-20 08:29:05,670 INFO L226 Difference]: Without dead ends: 814 [2022-03-20 08:29:05,679 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1760 GetRequests, 1335 SyntacticMatches, 1 SemanticMatches, 424 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64249 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=30011, Invalid=151039, Unknown=0, NotChecked=0, Total=181050 [2022-03-20 08:29:05,679 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 [2022-03-20 08:29:05,680 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] [2022-03-20 08:29:05,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2022-03-20 08:29:05,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 573. [2022-03-20 08:29:05,726 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) [2022-03-20 08:29:05,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 588 transitions. [2022-03-20 08:29:05,727 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 588 transitions. Word has length 608 [2022-03-20 08:29:05,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:29:05,727 INFO L478 AbstractCegarLoop]: Abstraction has 573 states and 588 transitions. [2022-03-20 08:29:05,727 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) [2022-03-20 08:29:05,727 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 588 transitions. [2022-03-20 08:29:05,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 619 [2022-03-20 08:29:05,730 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:29:05,730 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] [2022-03-20 08:29:05,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2022-03-20 08:29:05,931 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 [2022-03-20 08:29:05,931 INFO L403 AbstractCegarLoop]: === Iteration 74 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:29:05,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:29:05,931 INFO L85 PathProgramCache]: Analyzing trace with hash 2015205497, now seen corresponding path program 71 times [2022-03-20 08:29:05,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:29:05,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823248192] [2022-03-20 08:29:05,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:29:05,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:29:06,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:09,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:29:09,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:09,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-03-20 08:29:09,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:09,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-03-20 08:29:09,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:09,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-03-20 08:29:09,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:09,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-03-20 08:29:09,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:09,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-03-20 08:29:09,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:09,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-03-20 08:29:09,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:09,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-03-20 08:29:09,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:09,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-03-20 08:29:09,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:09,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-03-20 08:29:09,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:09,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-03-20 08:29:09,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:09,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-03-20 08:29:09,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:09,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-03-20 08:29:09,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:09,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-03-20 08:29:09,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:09,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-03-20 08:29:09,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:09,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-03-20 08:29:09,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:09,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-03-20 08:29:09,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:09,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-03-20 08:29:09,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:09,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-03-20 08:29:09,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:09,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-03-20 08:29:09,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:09,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-03-20 08:29:09,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:09,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-03-20 08:29:09,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:09,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-03-20 08:29:09,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:09,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-03-20 08:29:09,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:09,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-03-20 08:29:09,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:09,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-03-20 08:29:09,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:09,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-03-20 08:29:09,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:09,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-03-20 08:29:09,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:09,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-03-20 08:29:09,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:09,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-03-20 08:29:09,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:09,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-03-20 08:29:09,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:09,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-03-20 08:29:09,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:09,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-03-20 08:29:09,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:09,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-03-20 08:29:09,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:09,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-03-20 08:29:09,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:09,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-03-20 08:29:09,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:09,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-03-20 08:29:09,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:09,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-03-20 08:29:09,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:09,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-03-20 08:29:09,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:09,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-03-20 08:29:09,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:09,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2022-03-20 08:29:09,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:09,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2022-03-20 08:29:09,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:09,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2022-03-20 08:29:09,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:09,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2022-03-20 08:29:09,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:09,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2022-03-20 08:29:09,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:09,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2022-03-20 08:29:09,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:09,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2022-03-20 08:29:09,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:09,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2022-03-20 08:29:09,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:09,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 510 [2022-03-20 08:29:09,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:09,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 518 [2022-03-20 08:29:09,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:09,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2022-03-20 08:29:09,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:09,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 534 [2022-03-20 08:29:09,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:09,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 542 [2022-03-20 08:29:09,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:09,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 550 [2022-03-20 08:29:09,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:09,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 558 [2022-03-20 08:29:09,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:09,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 566 [2022-03-20 08:29:09,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:09,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 574 [2022-03-20 08:29:09,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:09,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 582 [2022-03-20 08:29:09,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:09,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 590 [2022-03-20 08:29:09,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:09,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 598 [2022-03-20 08:29:09,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:09,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 606 [2022-03-20 08:29:09,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:09,482 INFO L134 CoverageAnalysis]: Checked inductivity of 18060 backedges. 7143 proven. 3837 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2022-03-20 08:29:09,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:29:09,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823248192] [2022-03-20 08:29:09,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823248192] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:29:09,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505729148] [2022-03-20 08:29:09,482 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-20 08:29:09,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:29:09,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:29:09,483 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) [2022-03-20 08:29:09,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-03-20 08:29:09,808 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 61 check-sat command(s) [2022-03-20 08:29:09,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 08:29:09,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 1688 conjuncts, 124 conjunts are in the unsatisfiable core [2022-03-20 08:29:09,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:29:14,838 INFO L134 CoverageAnalysis]: Checked inductivity of 18060 backedges. 7320 proven. 3660 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2022-03-20 08:29:14,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:29:15,630 INFO L134 CoverageAnalysis]: Checked inductivity of 18060 backedges. 7320 proven. 3660 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2022-03-20 08:29:15,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505729148] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:29:15,630 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:29:15,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [125, 124, 124] total 188 [2022-03-20 08:29:15,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775735403] [2022-03-20 08:29:15,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:29:15,631 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 188 states [2022-03-20 08:29:15,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:29:15,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 188 interpolants. [2022-03-20 08:29:15,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7817, Invalid=27339, Unknown=0, NotChecked=0, Total=35156 [2022-03-20 08:29:15,634 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) [2022-03-20 08:29:21,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:29:21,932 INFO L93 Difference]: Finished difference Result 1070 states and 1268 transitions. [2022-03-20 08:29:21,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2022-03-20 08:29:21,933 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 [2022-03-20 08:29:21,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:29:21,935 INFO L225 Difference]: With dead ends: 1070 [2022-03-20 08:29:21,935 INFO L226 Difference]: Without dead ends: 819 [2022-03-20 08:29:21,939 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1664 GetRequests, 1356 SyntacticMatches, 0 SemanticMatches, 308 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26395 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=21239, Invalid=74551, Unknown=0, NotChecked=0, Total=95790 [2022-03-20 08:29:21,940 INFO L913 BasicCegarLoop]: 134 mSDtfsCounter, 1281 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 4096 mSolverCounterSat, 941 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s 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 [2022-03-20 08:29:21,940 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] [2022-03-20 08:29:21,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2022-03-20 08:29:21,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 575. [2022-03-20 08:29:21,988 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) [2022-03-20 08:29:21,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 590 transitions. [2022-03-20 08:29:21,988 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 590 transitions. Word has length 618 [2022-03-20 08:29:21,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:29:21,988 INFO L478 AbstractCegarLoop]: Abstraction has 575 states and 590 transitions. [2022-03-20 08:29:21,989 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) [2022-03-20 08:29:21,989 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 590 transitions. [2022-03-20 08:29:21,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 621 [2022-03-20 08:29:21,992 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:29:21,992 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] [2022-03-20 08:29:22,011 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2022-03-20 08:29:22,192 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 [2022-03-20 08:29:22,192 INFO L403 AbstractCegarLoop]: === Iteration 75 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:29:22,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:29:22,193 INFO L85 PathProgramCache]: Analyzing trace with hash 842533788, now seen corresponding path program 72 times [2022-03-20 08:29:22,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:29:22,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730177236] [2022-03-20 08:29:22,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:29:22,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:29:22,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:23,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:29:23,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:23,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-03-20 08:29:23,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:23,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-03-20 08:29:23,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:23,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-03-20 08:29:23,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:23,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-03-20 08:29:23,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:23,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-03-20 08:29:23,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:23,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-03-20 08:29:23,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:23,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-03-20 08:29:23,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:23,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-03-20 08:29:23,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:23,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-03-20 08:29:23,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:23,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-03-20 08:29:23,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:23,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-03-20 08:29:23,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:23,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-03-20 08:29:23,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:23,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-03-20 08:29:23,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:23,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-03-20 08:29:23,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:23,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-03-20 08:29:23,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:23,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-03-20 08:29:23,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:23,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-03-20 08:29:23,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:23,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-03-20 08:29:23,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:23,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-03-20 08:29:23,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:23,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-03-20 08:29:23,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:23,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-03-20 08:29:23,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:23,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-03-20 08:29:23,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:23,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-03-20 08:29:23,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:23,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-03-20 08:29:23,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:23,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-03-20 08:29:23,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:23,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-03-20 08:29:23,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:23,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-03-20 08:29:23,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:23,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-03-20 08:29:23,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:23,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-03-20 08:29:23,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:23,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-03-20 08:29:23,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:23,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-03-20 08:29:23,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:23,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-03-20 08:29:23,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:23,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-03-20 08:29:23,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:23,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-03-20 08:29:23,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:23,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-03-20 08:29:23,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:23,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2022-03-20 08:29:23,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:23,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2022-03-20 08:29:23,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:23,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2022-03-20 08:29:23,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:23,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2022-03-20 08:29:23,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:23,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2022-03-20 08:29:23,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:23,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2022-03-20 08:29:23,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:23,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2022-03-20 08:29:23,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:23,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2022-03-20 08:29:23,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:23,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2022-03-20 08:29:23,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:23,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2022-03-20 08:29:23,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:23,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2022-03-20 08:29:23,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:23,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2022-03-20 08:29:23,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:23,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 512 [2022-03-20 08:29:23,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:23,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 520 [2022-03-20 08:29:23,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:23,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 528 [2022-03-20 08:29:23,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:23,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 536 [2022-03-20 08:29:23,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:23,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 544 [2022-03-20 08:29:23,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:23,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 552 [2022-03-20 08:29:23,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:23,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 560 [2022-03-20 08:29:23,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:23,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2022-03-20 08:29:23,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:23,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 576 [2022-03-20 08:29:23,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:23,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 584 [2022-03-20 08:29:23,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:23,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 592 [2022-03-20 08:29:23,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:23,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 600 [2022-03-20 08:29:23,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:23,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 608 [2022-03-20 08:29:23,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:23,663 INFO L134 CoverageAnalysis]: Checked inductivity of 18182 backedges. 3780 proven. 7322 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2022-03-20 08:29:23,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:29:23,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730177236] [2022-03-20 08:29:23,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730177236] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:29:23,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015618053] [2022-03-20 08:29:23,663 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-20 08:29:23,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:29:23,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:29:23,664 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) [2022-03-20 08:29:23,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-03-20 08:29:23,977 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 62 check-sat command(s) [2022-03-20 08:29:23,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 08:29:23,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 1698 conjuncts, 125 conjunts are in the unsatisfiable core [2022-03-20 08:29:23,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:29:24,765 INFO L134 CoverageAnalysis]: Checked inductivity of 18182 backedges. 3902 proven. 7200 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2022-03-20 08:29:24,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:29:25,557 INFO L134 CoverageAnalysis]: Checked inductivity of 18182 backedges. 3902 proven. 7200 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2022-03-20 08:29:25,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015618053] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:29:25,558 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:29:25,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 66, 66] total 71 [2022-03-20 08:29:25,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557183609] [2022-03-20 08:29:25,559 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:29:25,559 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2022-03-20 08:29:25,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:29:25,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2022-03-20 08:29:25,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2096, Invalid=2874, Unknown=0, NotChecked=0, Total=4970 [2022-03-20 08:29:25,560 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) [2022-03-20 08:29:27,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:29:27,272 INFO L93 Difference]: Finished difference Result 594 states and 611 transitions. [2022-03-20 08:29:27,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-03-20 08:29:27,272 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 [2022-03-20 08:29:27,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:29:27,274 INFO L225 Difference]: With dead ends: 594 [2022-03-20 08:29:27,274 INFO L226 Difference]: Without dead ends: 592 [2022-03-20 08:29:27,275 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 [2022-03-20 08:29:27,275 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 [2022-03-20 08:29:27,275 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] [2022-03-20 08:29:27,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2022-03-20 08:29:27,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 587. [2022-03-20 08:29:27,323 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) [2022-03-20 08:29:27,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 603 transitions. [2022-03-20 08:29:27,323 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 603 transitions. Word has length 620 [2022-03-20 08:29:27,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:29:27,324 INFO L478 AbstractCegarLoop]: Abstraction has 587 states and 603 transitions. [2022-03-20 08:29:27,324 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) [2022-03-20 08:29:27,324 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 603 transitions. [2022-03-20 08:29:27,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 637 [2022-03-20 08:29:27,327 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:29:27,327 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] [2022-03-20 08:29:27,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2022-03-20 08:29:27,527 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 [2022-03-20 08:29:27,528 INFO L403 AbstractCegarLoop]: === Iteration 76 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:29:27,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:29:27,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1976769732, now seen corresponding path program 73 times [2022-03-20 08:29:27,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:29:27,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352553715] [2022-03-20 08:29:27,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:29:27,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:29:27,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:31,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:29:31,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:31,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-03-20 08:29:31,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:31,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-03-20 08:29:31,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:31,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-03-20 08:29:31,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:31,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-03-20 08:29:31,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:31,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-03-20 08:29:31,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:31,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-03-20 08:29:31,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:31,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-03-20 08:29:31,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:31,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-03-20 08:29:31,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:31,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-03-20 08:29:31,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:31,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-03-20 08:29:31,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:31,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-03-20 08:29:31,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:31,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-03-20 08:29:31,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:31,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-03-20 08:29:31,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:31,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-03-20 08:29:31,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:31,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-03-20 08:29:31,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:31,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-03-20 08:29:31,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:31,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-03-20 08:29:31,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:31,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-03-20 08:29:31,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:31,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-03-20 08:29:31,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:31,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-03-20 08:29:31,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:31,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-03-20 08:29:31,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:31,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-03-20 08:29:31,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:31,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-03-20 08:29:31,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:31,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-03-20 08:29:31,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:31,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-03-20 08:29:31,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:31,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-03-20 08:29:31,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:31,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-03-20 08:29:31,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:31,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-03-20 08:29:31,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:31,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-03-20 08:29:31,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:31,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-03-20 08:29:31,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:31,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-03-20 08:29:31,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:31,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-03-20 08:29:31,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:31,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-03-20 08:29:31,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:31,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-03-20 08:29:31,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:31,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-03-20 08:29:31,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:31,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2022-03-20 08:29:31,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:31,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2022-03-20 08:29:31,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:31,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2022-03-20 08:29:31,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:31,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2022-03-20 08:29:31,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:31,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2022-03-20 08:29:31,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:31,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2022-03-20 08:29:31,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:31,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2022-03-20 08:29:31,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:31,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2022-03-20 08:29:31,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:31,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2022-03-20 08:29:31,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:31,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2022-03-20 08:29:31,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:31,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2022-03-20 08:29:31,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:31,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2022-03-20 08:29:31,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:31,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 512 [2022-03-20 08:29:31,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:31,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 520 [2022-03-20 08:29:31,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:31,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 528 [2022-03-20 08:29:31,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:31,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 536 [2022-03-20 08:29:31,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:31,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 544 [2022-03-20 08:29:31,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:31,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 552 [2022-03-20 08:29:31,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:31,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 560 [2022-03-20 08:29:31,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:31,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2022-03-20 08:29:31,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:31,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 576 [2022-03-20 08:29:31,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:31,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 584 [2022-03-20 08:29:31,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:31,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 592 [2022-03-20 08:29:31,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:31,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 600 [2022-03-20 08:29:31,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:31,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 608 [2022-03-20 08:29:31,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:31,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 616 [2022-03-20 08:29:31,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:31,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 624 [2022-03-20 08:29:31,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:31,269 INFO L134 CoverageAnalysis]: Checked inductivity of 19158 backedges. 7629 proven. 3965 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2022-03-20 08:29:31,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:29:31,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352553715] [2022-03-20 08:29:31,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352553715] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:29:31,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132992889] [2022-03-20 08:29:31,270 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-20 08:29:31,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:29:31,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:29:31,271 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) [2022-03-20 08:29:31,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-03-20 08:29:31,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:31,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 1732 conjuncts, 126 conjunts are in the unsatisfiable core [2022-03-20 08:29:31,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:29:36,657 INFO L134 CoverageAnalysis]: Checked inductivity of 19158 backedges. 8052 proven. 3782 refuted. 0 times theorem prover too weak. 7324 trivial. 0 not checked. [2022-03-20 08:29:36,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:29:37,499 INFO L134 CoverageAnalysis]: Checked inductivity of 19158 backedges. 7810 proven. 3782 refuted. 0 times theorem prover too weak. 7566 trivial. 0 not checked. [2022-03-20 08:29:37,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132992889] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:29:37,499 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:29:37,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [128, 126, 126] total 192 [2022-03-20 08:29:37,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360071074] [2022-03-20 08:29:37,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:29:37,500 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2022-03-20 08:29:37,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:29:37,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2022-03-20 08:29:37,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8133, Invalid=28539, Unknown=0, NotChecked=0, Total=36672 [2022-03-20 08:29:37,503 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) [2022-03-20 08:29:43,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:29:43,987 INFO L93 Difference]: Finished difference Result 1098 states and 1300 transitions. [2022-03-20 08:29:43,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2022-03-20 08:29:43,988 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 [2022-03-20 08:29:43,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:29:43,990 INFO L225 Difference]: With dead ends: 1098 [2022-03-20 08:29:43,990 INFO L226 Difference]: Without dead ends: 837 [2022-03-20 08:29:43,994 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1710 GetRequests, 1396 SyntacticMatches, 0 SemanticMatches, 314 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27511 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=21992, Invalid=77548, Unknown=0, NotChecked=0, Total=99540 [2022-03-20 08:29:43,994 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 [2022-03-20 08:29:43,994 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] [2022-03-20 08:29:43,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2022-03-20 08:29:44,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 589. [2022-03-20 08:29:44,045 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) [2022-03-20 08:29:44,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 605 transitions. [2022-03-20 08:29:44,046 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 605 transitions. Word has length 636 [2022-03-20 08:29:44,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:29:44,046 INFO L478 AbstractCegarLoop]: Abstraction has 589 states and 605 transitions. [2022-03-20 08:29:44,046 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) [2022-03-20 08:29:44,046 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 605 transitions. [2022-03-20 08:29:44,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 639 [2022-03-20 08:29:44,049 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:29:44,049 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] [2022-03-20 08:29:44,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2022-03-20 08:29:44,250 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 [2022-03-20 08:29:44,250 INFO L403 AbstractCegarLoop]: === Iteration 77 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:29:44,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:29:44,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1168256295, now seen corresponding path program 74 times [2022-03-20 08:29:44,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:29:44,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002780144] [2022-03-20 08:29:44,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:29:44,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:29:44,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:47,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:29:47,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:47,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-03-20 08:29:47,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:47,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-03-20 08:29:47,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:47,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-03-20 08:29:47,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:47,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-03-20 08:29:47,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:47,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-03-20 08:29:47,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:47,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-03-20 08:29:47,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:47,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-03-20 08:29:47,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:47,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-03-20 08:29:47,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:47,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-03-20 08:29:47,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:47,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-03-20 08:29:47,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:47,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-03-20 08:29:47,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:47,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-03-20 08:29:47,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:47,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-03-20 08:29:47,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:47,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-03-20 08:29:47,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:47,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-03-20 08:29:47,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:47,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-03-20 08:29:47,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:47,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-03-20 08:29:47,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:47,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-03-20 08:29:47,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:47,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-03-20 08:29:47,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:47,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-03-20 08:29:47,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:47,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-03-20 08:29:47,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:47,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-03-20 08:29:47,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:47,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-03-20 08:29:47,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:47,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-03-20 08:29:47,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:47,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-03-20 08:29:47,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:47,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-03-20 08:29:47,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:47,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-03-20 08:29:47,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:47,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-03-20 08:29:47,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:47,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-03-20 08:29:47,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:47,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-03-20 08:29:47,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:47,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-03-20 08:29:47,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:47,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-03-20 08:29:47,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:47,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-03-20 08:29:47,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:47,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-03-20 08:29:47,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:47,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-03-20 08:29:47,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:47,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-03-20 08:29:47,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:47,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-03-20 08:29:47,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:47,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-03-20 08:29:47,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:47,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2022-03-20 08:29:47,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:47,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2022-03-20 08:29:47,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:47,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2022-03-20 08:29:47,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:47,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2022-03-20 08:29:47,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:47,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2022-03-20 08:29:47,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:47,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2022-03-20 08:29:47,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:47,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2022-03-20 08:29:47,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:47,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2022-03-20 08:29:47,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:47,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2022-03-20 08:29:47,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:47,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2022-03-20 08:29:47,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:47,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 522 [2022-03-20 08:29:47,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:47,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 530 [2022-03-20 08:29:47,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:47,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2022-03-20 08:29:47,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:47,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 546 [2022-03-20 08:29:47,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:47,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2022-03-20 08:29:47,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:47,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 562 [2022-03-20 08:29:47,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:47,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 570 [2022-03-20 08:29:47,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:47,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 578 [2022-03-20 08:29:47,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:47,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 586 [2022-03-20 08:29:47,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:47,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 594 [2022-03-20 08:29:47,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:47,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2022-03-20 08:29:47,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:47,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 610 [2022-03-20 08:29:47,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:47,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 618 [2022-03-20 08:29:47,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:47,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 626 [2022-03-20 08:29:47,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:29:47,982 INFO L134 CoverageAnalysis]: Checked inductivity of 19282 backedges. 7629 proven. 4089 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2022-03-20 08:29:47,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:29:47,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002780144] [2022-03-20 08:29:47,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002780144] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:29:47,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062375899] [2022-03-20 08:29:47,982 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 08:29:47,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:29:47,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:29:47,983 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) [2022-03-20 08:29:47,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-03-20 08:29:48,159 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 08:29:48,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 08:29:48,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 1742 conjuncts, 128 conjunts are in the unsatisfiable core [2022-03-20 08:29:48,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:29:52,337 INFO L134 CoverageAnalysis]: Checked inductivity of 19282 backedges. 4030 proven. 7688 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2022-03-20 08:29:52,337 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:29:53,189 INFO L134 CoverageAnalysis]: Checked inductivity of 19282 backedges. 4030 proven. 7688 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2022-03-20 08:29:53,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062375899] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:29:53,189 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:29:53,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [129, 67, 67] total 194 [2022-03-20 08:29:53,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623371026] [2022-03-20 08:29:53,190 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:29:53,190 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 194 states [2022-03-20 08:29:53,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:29:53,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 194 interpolants. [2022-03-20 08:29:53,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6182, Invalid=31260, Unknown=0, NotChecked=0, Total=37442 [2022-03-20 08:29:53,194 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) [2022-03-20 08:30:04,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:30:04,408 INFO L93 Difference]: Finished difference Result 1111 states and 1317 transitions. [2022-03-20 08:30:04,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 256 states. [2022-03-20 08:30:04,408 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 [2022-03-20 08:30:04,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:30:04,410 INFO L225 Difference]: With dead ends: 1111 [2022-03-20 08:30:04,410 INFO L226 Difference]: Without dead ends: 852 [2022-03-20 08:30:04,421 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1847 GetRequests, 1401 SyntacticMatches, 1 SemanticMatches, 445 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70864 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=33023, Invalid=166339, Unknown=0, NotChecked=0, Total=199362 [2022-03-20 08:30:04,421 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 [2022-03-20 08:30:04,422 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] [2022-03-20 08:30:04,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2022-03-20 08:30:04,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 599. [2022-03-20 08:30:04,472 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) [2022-03-20 08:30:04,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 615 transitions. [2022-03-20 08:30:04,473 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 615 transitions. Word has length 638 [2022-03-20 08:30:04,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:30:04,473 INFO L478 AbstractCegarLoop]: Abstraction has 599 states and 615 transitions. [2022-03-20 08:30:04,473 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) [2022-03-20 08:30:04,473 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 615 transitions. [2022-03-20 08:30:04,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 649 [2022-03-20 08:30:04,476 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:30:04,477 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] [2022-03-20 08:30:04,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2022-03-20 08:30:04,679 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 [2022-03-20 08:30:04,679 INFO L403 AbstractCegarLoop]: === Iteration 78 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:30:04,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:30:04,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1475078818, now seen corresponding path program 75 times [2022-03-20 08:30:04,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:30:04,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564116622] [2022-03-20 08:30:04,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:30:04,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:30:04,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:08,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:30:08,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:08,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-03-20 08:30:08,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:08,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-03-20 08:30:08,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:08,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-03-20 08:30:08,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:08,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-03-20 08:30:08,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:08,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-03-20 08:30:08,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:08,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-03-20 08:30:08,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:08,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-03-20 08:30:08,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:08,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-03-20 08:30:08,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:08,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-03-20 08:30:08,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:08,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-03-20 08:30:08,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:08,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-03-20 08:30:08,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:08,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-03-20 08:30:08,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:08,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-03-20 08:30:08,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:08,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-03-20 08:30:08,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:08,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-03-20 08:30:08,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:08,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-03-20 08:30:08,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:08,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-03-20 08:30:08,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:08,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-03-20 08:30:08,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:08,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-03-20 08:30:08,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:08,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-03-20 08:30:08,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:08,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-03-20 08:30:08,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:08,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-03-20 08:30:08,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:08,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-03-20 08:30:08,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:08,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-03-20 08:30:08,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:08,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-03-20 08:30:08,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:08,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-03-20 08:30:08,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:08,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-03-20 08:30:08,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:08,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-03-20 08:30:08,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:08,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-03-20 08:30:08,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:08,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-03-20 08:30:08,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:08,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-03-20 08:30:08,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:08,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-03-20 08:30:08,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:08,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-03-20 08:30:08,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:08,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-03-20 08:30:08,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:08,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-03-20 08:30:08,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:08,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2022-03-20 08:30:08,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:08,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2022-03-20 08:30:08,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:08,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2022-03-20 08:30:08,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:08,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2022-03-20 08:30:08,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:08,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2022-03-20 08:30:08,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:08,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2022-03-20 08:30:08,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:08,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2022-03-20 08:30:08,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:08,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2022-03-20 08:30:08,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:08,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2022-03-20 08:30:08,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:08,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 492 [2022-03-20 08:30:08,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:08,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 500 [2022-03-20 08:30:08,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:08,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2022-03-20 08:30:08,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:08,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2022-03-20 08:30:08,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:08,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 524 [2022-03-20 08:30:08,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:08,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 532 [2022-03-20 08:30:08,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:08,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2022-03-20 08:30:08,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:08,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 548 [2022-03-20 08:30:08,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:08,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 556 [2022-03-20 08:30:08,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:08,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 564 [2022-03-20 08:30:08,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:08,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 572 [2022-03-20 08:30:08,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:08,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 580 [2022-03-20 08:30:08,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:08,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 588 [2022-03-20 08:30:08,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:08,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 596 [2022-03-20 08:30:08,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:08,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 604 [2022-03-20 08:30:08,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:08,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 612 [2022-03-20 08:30:08,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:08,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 620 [2022-03-20 08:30:08,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:08,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 628 [2022-03-20 08:30:08,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:08,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 636 [2022-03-20 08:30:08,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:08,568 INFO L134 CoverageAnalysis]: Checked inductivity of 19908 backedges. 7878 proven. 4218 refuted. 0 times theorem prover too weak. 7812 trivial. 0 not checked. [2022-03-20 08:30:08,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:30:08,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564116622] [2022-03-20 08:30:08,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564116622] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:30:08,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082405675] [2022-03-20 08:30:08,568 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-20 08:30:08,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:30:08,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:30:08,569 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) [2022-03-20 08:30:08,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-03-20 08:30:08,909 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 64 check-sat command(s) [2022-03-20 08:30:08,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 08:30:08,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 1769 conjuncts, 130 conjunts are in the unsatisfiable core [2022-03-20 08:30:08,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:30:13,221 INFO L134 CoverageAnalysis]: Checked inductivity of 19908 backedges. 4158 proven. 7938 refuted. 0 times theorem prover too weak. 7812 trivial. 0 not checked. [2022-03-20 08:30:13,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:30:14,078 INFO L134 CoverageAnalysis]: Checked inductivity of 19908 backedges. 4158 proven. 7938 refuted. 0 times theorem prover too weak. 7812 trivial. 0 not checked. [2022-03-20 08:30:14,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082405675] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:30:14,078 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:30:14,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [131, 68, 68] total 197 [2022-03-20 08:30:14,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248883609] [2022-03-20 08:30:14,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:30:14,079 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 197 states [2022-03-20 08:30:14,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:30:14,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 197 interpolants. [2022-03-20 08:30:14,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6376, Invalid=32236, Unknown=0, NotChecked=0, Total=38612 [2022-03-20 08:30:14,082 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) [2022-03-20 08:30:25,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:30:25,927 INFO L93 Difference]: Finished difference Result 1129 states and 1338 transitions. [2022-03-20 08:30:25,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 260 states. [2022-03-20 08:30:25,928 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 [2022-03-20 08:30:25,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:30:25,930 INFO L225 Difference]: With dead ends: 1129 [2022-03-20 08:30:25,930 INFO L226 Difference]: Without dead ends: 866 [2022-03-20 08:30:25,942 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1876 GetRequests, 1423 SyntacticMatches, 1 SemanticMatches, 452 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73141 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=34059, Invalid=171603, Unknown=0, NotChecked=0, Total=205662 [2022-03-20 08:30:25,943 INFO L913 BasicCegarLoop]: 201 mSDtfsCounter, 2374 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 8715 mSolverCounterSat, 2229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s 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, 3.2s IncrementalHoareTripleChecker+Time [2022-03-20 08:30:25,943 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2375 Valid, 293 Invalid, 10944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2229 Valid, 8715 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-03-20 08:30:25,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2022-03-20 08:30:26,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 609. [2022-03-20 08:30:26,025 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) [2022-03-20 08:30:26,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 625 transitions. [2022-03-20 08:30:26,026 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 625 transitions. Word has length 648 [2022-03-20 08:30:26,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:30:26,026 INFO L478 AbstractCegarLoop]: Abstraction has 609 states and 625 transitions. [2022-03-20 08:30:26,026 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) [2022-03-20 08:30:26,026 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 625 transitions. [2022-03-20 08:30:26,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 659 [2022-03-20 08:30:26,029 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:30:26,030 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] [2022-03-20 08:30:26,050 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2022-03-20 08:30:26,230 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 [2022-03-20 08:30:26,230 INFO L403 AbstractCegarLoop]: === Iteration 79 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:30:26,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:30:26,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1326209323, now seen corresponding path program 76 times [2022-03-20 08:30:26,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:30:26,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652422216] [2022-03-20 08:30:26,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:30:26,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:30:26,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:30,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:30:30,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:30,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-03-20 08:30:30,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:30,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-03-20 08:30:30,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:30,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-03-20 08:30:30,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:30,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-03-20 08:30:30,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:30,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-03-20 08:30:30,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:30,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-03-20 08:30:30,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:30,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-03-20 08:30:30,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:30,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-03-20 08:30:30,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:30,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-03-20 08:30:30,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:30,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-03-20 08:30:30,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:30,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-03-20 08:30:30,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:30,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-03-20 08:30:30,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:30,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-03-20 08:30:30,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:30,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-03-20 08:30:30,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:30,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-03-20 08:30:30,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:30,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-03-20 08:30:30,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:30,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-03-20 08:30:30,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:30,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-03-20 08:30:30,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:30,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-03-20 08:30:30,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:30,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-03-20 08:30:30,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:30,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-03-20 08:30:30,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:30,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-03-20 08:30:30,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:30,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-03-20 08:30:30,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:30,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-03-20 08:30:30,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:30,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-03-20 08:30:30,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:30,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-03-20 08:30:30,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:30,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-03-20 08:30:30,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:30,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-03-20 08:30:30,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:30,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-03-20 08:30:30,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:30,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-03-20 08:30:30,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:30,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-03-20 08:30:30,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:30,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-03-20 08:30:30,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:30,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-03-20 08:30:30,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:30,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-03-20 08:30:30,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:30,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-03-20 08:30:30,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:30,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-03-20 08:30:30,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:30,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-03-20 08:30:30,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:30,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-03-20 08:30:30,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:30,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2022-03-20 08:30:30,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:30,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2022-03-20 08:30:30,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:30,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2022-03-20 08:30:30,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:30,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2022-03-20 08:30:30,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:30,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2022-03-20 08:30:30,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:30,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2022-03-20 08:30:30,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:30,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2022-03-20 08:30:30,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:30,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2022-03-20 08:30:30,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:30,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 510 [2022-03-20 08:30:30,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:30,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 518 [2022-03-20 08:30:30,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:30,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2022-03-20 08:30:30,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:30,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 534 [2022-03-20 08:30:30,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:30,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 542 [2022-03-20 08:30:30,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:30,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 550 [2022-03-20 08:30:30,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:30,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 558 [2022-03-20 08:30:30,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:30,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 566 [2022-03-20 08:30:30,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:30,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 574 [2022-03-20 08:30:30,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:30,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 582 [2022-03-20 08:30:30,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:30,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 590 [2022-03-20 08:30:30,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:30,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 598 [2022-03-20 08:30:30,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:30,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 606 [2022-03-20 08:30:30,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:30,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 614 [2022-03-20 08:30:30,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:30,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 622 [2022-03-20 08:30:30,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:30,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 630 [2022-03-20 08:30:30,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:30,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 638 [2022-03-20 08:30:30,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:30,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2022-03-20 08:30:30,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:30,204 INFO L134 CoverageAnalysis]: Checked inductivity of 20544 backedges. 8131 proven. 4349 refuted. 0 times theorem prover too weak. 8064 trivial. 0 not checked. [2022-03-20 08:30:30,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:30:30,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652422216] [2022-03-20 08:30:30,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652422216] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:30:30,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682108596] [2022-03-20 08:30:30,204 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-20 08:30:30,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:30:30,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:30:30,206 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) [2022-03-20 08:30:30,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-03-20 08:30:30,402 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-20 08:30:30,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 08:30:30,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 1796 conjuncts, 132 conjunts are in the unsatisfiable core [2022-03-20 08:30:30,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:30:34,824 INFO L134 CoverageAnalysis]: Checked inductivity of 20544 backedges. 4288 proven. 8192 refuted. 0 times theorem prover too weak. 8064 trivial. 0 not checked. [2022-03-20 08:30:34,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:30:35,727 INFO L134 CoverageAnalysis]: Checked inductivity of 20544 backedges. 4288 proven. 8192 refuted. 0 times theorem prover too weak. 8064 trivial. 0 not checked. [2022-03-20 08:30:35,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682108596] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:30:35,727 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:30:35,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [133, 69, 69] total 200 [2022-03-20 08:30:35,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061465018] [2022-03-20 08:30:35,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:30:35,728 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 200 states [2022-03-20 08:30:35,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:30:35,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 200 interpolants. [2022-03-20 08:30:35,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6573, Invalid=33227, Unknown=0, NotChecked=0, Total=39800 [2022-03-20 08:30:35,731 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) [2022-03-20 08:30:47,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:30:47,712 INFO L93 Difference]: Finished difference Result 1147 states and 1359 transitions. [2022-03-20 08:30:47,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 264 states. [2022-03-20 08:30:47,713 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 [2022-03-20 08:30:47,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:30:47,714 INFO L225 Difference]: With dead ends: 1147 [2022-03-20 08:30:47,715 INFO L226 Difference]: Without dead ends: 880 [2022-03-20 08:30:47,726 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1905 GetRequests, 1445 SyntacticMatches, 1 SemanticMatches, 459 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75454 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=35111, Invalid=176949, Unknown=0, NotChecked=0, Total=212060 [2022-03-20 08:30:47,726 INFO L913 BasicCegarLoop]: 204 mSDtfsCounter, 2503 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 8264 mSolverCounterSat, 2044 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s 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, 3.1s IncrementalHoareTripleChecker+Time [2022-03-20 08:30:47,726 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2504 Valid, 296 Invalid, 10308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2044 Valid, 8264 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-03-20 08:30:47,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2022-03-20 08:30:47,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 619. [2022-03-20 08:30:47,780 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) [2022-03-20 08:30:47,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 635 transitions. [2022-03-20 08:30:47,781 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 635 transitions. Word has length 658 [2022-03-20 08:30:47,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:30:47,781 INFO L478 AbstractCegarLoop]: Abstraction has 619 states and 635 transitions. [2022-03-20 08:30:47,781 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) [2022-03-20 08:30:47,782 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 635 transitions. [2022-03-20 08:30:47,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 669 [2022-03-20 08:30:47,803 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:30:47,804 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] [2022-03-20 08:30:47,822 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2022-03-20 08:30:48,004 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 [2022-03-20 08:30:48,004 INFO L403 AbstractCegarLoop]: === Iteration 80 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:30:48,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:30:48,005 INFO L85 PathProgramCache]: Analyzing trace with hash -154381940, now seen corresponding path program 77 times [2022-03-20 08:30:48,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:30:48,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550177172] [2022-03-20 08:30:48,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:30:48,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:30:48,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:51,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:30:51,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:51,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-03-20 08:30:51,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:51,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-03-20 08:30:51,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:51,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-03-20 08:30:51,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:51,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-03-20 08:30:51,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:51,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-03-20 08:30:51,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:51,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-03-20 08:30:51,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:51,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-03-20 08:30:51,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:51,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-03-20 08:30:51,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:51,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-03-20 08:30:51,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:52,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-03-20 08:30:52,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:52,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-03-20 08:30:52,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:52,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-03-20 08:30:52,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:52,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-03-20 08:30:52,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:52,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-03-20 08:30:52,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:52,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-03-20 08:30:52,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:52,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-03-20 08:30:52,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:52,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-03-20 08:30:52,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:52,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-03-20 08:30:52,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:52,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-03-20 08:30:52,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:52,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-03-20 08:30:52,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:52,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-03-20 08:30:52,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:52,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-03-20 08:30:52,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:52,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-03-20 08:30:52,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:52,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-03-20 08:30:52,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:52,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-03-20 08:30:52,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:52,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-03-20 08:30:52,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:52,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-03-20 08:30:52,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:52,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-03-20 08:30:52,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:52,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-03-20 08:30:52,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:52,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-03-20 08:30:52,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:52,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-03-20 08:30:52,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:52,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-03-20 08:30:52,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:52,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-03-20 08:30:52,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:52,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-03-20 08:30:52,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:52,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2022-03-20 08:30:52,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:52,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2022-03-20 08:30:52,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:52,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2022-03-20 08:30:52,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:52,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2022-03-20 08:30:52,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:52,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2022-03-20 08:30:52,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:52,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2022-03-20 08:30:52,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:52,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2022-03-20 08:30:52,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:52,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2022-03-20 08:30:52,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:52,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2022-03-20 08:30:52,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:52,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2022-03-20 08:30:52,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:52,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2022-03-20 08:30:52,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:52,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2022-03-20 08:30:52,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:52,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 512 [2022-03-20 08:30:52,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:52,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 520 [2022-03-20 08:30:52,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:52,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 528 [2022-03-20 08:30:52,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:52,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 536 [2022-03-20 08:30:52,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:52,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 544 [2022-03-20 08:30:52,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:52,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 552 [2022-03-20 08:30:52,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:52,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 560 [2022-03-20 08:30:52,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:52,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2022-03-20 08:30:52,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:52,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 576 [2022-03-20 08:30:52,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:52,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 584 [2022-03-20 08:30:52,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:52,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 592 [2022-03-20 08:30:52,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:52,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 600 [2022-03-20 08:30:52,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:52,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 608 [2022-03-20 08:30:52,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:52,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 616 [2022-03-20 08:30:52,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:52,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 624 [2022-03-20 08:30:52,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:52,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 632 [2022-03-20 08:30:52,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:52,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 640 [2022-03-20 08:30:52,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:52,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 648 [2022-03-20 08:30:52,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:52,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 656 [2022-03-20 08:30:52,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:30:52,087 INFO L134 CoverageAnalysis]: Checked inductivity of 21190 backedges. 8388 proven. 4482 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2022-03-20 08:30:52,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:30:52,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550177172] [2022-03-20 08:30:52,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550177172] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:30:52,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162338952] [2022-03-20 08:30:52,088 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-20 08:30:52,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:30:52,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:30:52,089 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) [2022-03-20 08:30:52,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-03-20 08:30:52,464 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 66 check-sat command(s) [2022-03-20 08:30:52,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 08:30:52,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 1823 conjuncts, 134 conjunts are in the unsatisfiable core [2022-03-20 08:30:52,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:30:58,212 INFO L134 CoverageAnalysis]: Checked inductivity of 21190 backedges. 8580 proven. 4290 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2022-03-20 08:30:58,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:30:59,127 INFO L134 CoverageAnalysis]: Checked inductivity of 21190 backedges. 8580 proven. 4290 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2022-03-20 08:30:59,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162338952] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:30:59,127 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:30:59,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [135, 134, 134] total 203 [2022-03-20 08:30:59,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298533996] [2022-03-20 08:30:59,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:30:59,128 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 203 states [2022-03-20 08:30:59,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:30:59,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 203 interpolants. [2022-03-20 08:30:59,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9117, Invalid=31889, Unknown=0, NotChecked=0, Total=41006 [2022-03-20 08:30:59,132 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) [2022-03-20 08:31:06,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:31:06,415 INFO L93 Difference]: Finished difference Result 1156 states and 1370 transitions. [2022-03-20 08:31:06,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2022-03-20 08:31:06,415 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 [2022-03-20 08:31:06,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:31:06,417 INFO L225 Difference]: With dead ends: 1156 [2022-03-20 08:31:06,417 INFO L226 Difference]: Without dead ends: 885 [2022-03-20 08:31:06,424 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1799 GetRequests, 1466 SyntacticMatches, 0 SemanticMatches, 333 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30870 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=24794, Invalid=87096, Unknown=0, NotChecked=0, Total=111890 [2022-03-20 08:31:06,424 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 [2022-03-20 08:31:06,424 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] [2022-03-20 08:31:06,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2022-03-20 08:31:06,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 621. [2022-03-20 08:31:06,479 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) [2022-03-20 08:31:06,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 637 transitions. [2022-03-20 08:31:06,480 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 637 transitions. Word has length 668 [2022-03-20 08:31:06,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:31:06,480 INFO L478 AbstractCegarLoop]: Abstraction has 621 states and 637 transitions. [2022-03-20 08:31:06,480 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) [2022-03-20 08:31:06,480 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 637 transitions. [2022-03-20 08:31:06,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 671 [2022-03-20 08:31:06,484 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:31:06,484 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] [2022-03-20 08:31:06,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2022-03-20 08:31:06,699 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 [2022-03-20 08:31:06,699 INFO L403 AbstractCegarLoop]: === Iteration 81 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:31:06,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:31:06,700 INFO L85 PathProgramCache]: Analyzing trace with hash -255257105, now seen corresponding path program 78 times [2022-03-20 08:31:06,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:31:06,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178497697] [2022-03-20 08:31:06,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:31:06,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:31:06,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:08,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:31:08,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:08,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-03-20 08:31:08,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:08,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-03-20 08:31:08,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:08,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-03-20 08:31:08,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:08,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-03-20 08:31:08,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:08,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-03-20 08:31:08,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:08,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-03-20 08:31:08,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:08,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-03-20 08:31:08,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:08,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-03-20 08:31:08,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:08,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-03-20 08:31:08,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:08,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-03-20 08:31:08,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:08,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-03-20 08:31:08,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:08,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-03-20 08:31:08,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:08,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-03-20 08:31:08,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:08,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-03-20 08:31:08,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:08,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-03-20 08:31:08,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:08,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-03-20 08:31:08,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:08,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-03-20 08:31:08,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:08,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-03-20 08:31:08,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:08,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-03-20 08:31:08,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:08,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-03-20 08:31:08,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:08,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-03-20 08:31:08,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:08,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-03-20 08:31:08,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:08,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-03-20 08:31:08,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:08,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-03-20 08:31:08,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:08,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-03-20 08:31:08,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:08,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-03-20 08:31:08,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:08,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-03-20 08:31:08,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:08,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-03-20 08:31:08,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:08,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-03-20 08:31:08,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:08,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-03-20 08:31:08,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:08,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-03-20 08:31:08,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:08,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-03-20 08:31:08,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:08,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-03-20 08:31:08,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:08,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-03-20 08:31:08,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:08,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-03-20 08:31:08,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:08,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-03-20 08:31:08,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:08,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-03-20 08:31:08,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:08,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2022-03-20 08:31:08,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:08,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2022-03-20 08:31:08,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:08,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2022-03-20 08:31:08,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:08,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2022-03-20 08:31:08,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:08,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2022-03-20 08:31:08,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:08,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2022-03-20 08:31:08,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:08,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2022-03-20 08:31:08,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:08,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2022-03-20 08:31:08,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:08,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2022-03-20 08:31:08,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:08,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2022-03-20 08:31:08,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:08,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 522 [2022-03-20 08:31:08,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:08,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 530 [2022-03-20 08:31:08,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:08,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2022-03-20 08:31:08,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:08,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 546 [2022-03-20 08:31:08,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:08,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2022-03-20 08:31:08,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:08,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 562 [2022-03-20 08:31:08,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:08,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 570 [2022-03-20 08:31:08,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:08,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 578 [2022-03-20 08:31:08,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:08,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 586 [2022-03-20 08:31:08,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:08,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 594 [2022-03-20 08:31:08,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:08,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2022-03-20 08:31:08,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:08,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 610 [2022-03-20 08:31:08,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:08,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 618 [2022-03-20 08:31:08,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:08,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 626 [2022-03-20 08:31:08,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:08,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 634 [2022-03-20 08:31:08,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:08,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 642 [2022-03-20 08:31:08,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:08,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 650 [2022-03-20 08:31:08,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:08,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 658 [2022-03-20 08:31:08,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:08,386 INFO L134 CoverageAnalysis]: Checked inductivity of 21322 backedges. 4420 proven. 8582 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2022-03-20 08:31:08,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:31:08,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178497697] [2022-03-20 08:31:08,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178497697] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:31:08,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328368281] [2022-03-20 08:31:08,387 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-20 08:31:08,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:31:08,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:31:08,388 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) [2022-03-20 08:31:08,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-03-20 08:31:08,740 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 67 check-sat command(s) [2022-03-20 08:31:08,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 08:31:08,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 1833 conjuncts, 135 conjunts are in the unsatisfiable core [2022-03-20 08:31:08,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:31:09,597 INFO L134 CoverageAnalysis]: Checked inductivity of 21322 backedges. 4552 proven. 8450 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2022-03-20 08:31:09,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:31:10,459 INFO L134 CoverageAnalysis]: Checked inductivity of 21322 backedges. 4552 proven. 8450 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2022-03-20 08:31:10,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328368281] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:31:10,459 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:31:10,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 71, 71] total 76 [2022-03-20 08:31:10,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773343548] [2022-03-20 08:31:10,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:31:10,460 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2022-03-20 08:31:10,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:31:10,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2022-03-20 08:31:10,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2431, Invalid=3269, Unknown=0, NotChecked=0, Total=5700 [2022-03-20 08:31:10,461 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) [2022-03-20 08:31:12,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:31:12,568 INFO L93 Difference]: Finished difference Result 640 states and 658 transitions. [2022-03-20 08:31:12,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-03-20 08:31:12,569 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 [2022-03-20 08:31:12,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:31:12,570 INFO L225 Difference]: With dead ends: 640 [2022-03-20 08:31:12,570 INFO L226 Difference]: Without dead ends: 638 [2022-03-20 08:31:12,573 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 [2022-03-20 08:31:12,573 INFO L913 BasicCegarLoop]: 87 mSDtfsCounter, 315 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 2408 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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 [2022-03-20 08:31:12,573 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] [2022-03-20 08:31:12,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2022-03-20 08:31:12,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 633. [2022-03-20 08:31:12,649 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) [2022-03-20 08:31:12,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 650 transitions. [2022-03-20 08:31:12,649 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 650 transitions. Word has length 670 [2022-03-20 08:31:12,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:31:12,650 INFO L478 AbstractCegarLoop]: Abstraction has 633 states and 650 transitions. [2022-03-20 08:31:12,650 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) [2022-03-20 08:31:12,650 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 650 transitions. [2022-03-20 08:31:12,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 687 [2022-03-20 08:31:12,653 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:31:12,653 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] [2022-03-20 08:31:12,672 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0 [2022-03-20 08:31:12,854 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 [2022-03-20 08:31:12,854 INFO L403 AbstractCegarLoop]: === Iteration 82 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:31:12,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:31:12,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1138548457, now seen corresponding path program 79 times [2022-03-20 08:31:12,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:31:12,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025403378] [2022-03-20 08:31:12,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:31:12,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:31:12,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:17,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:31:17,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:17,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-03-20 08:31:17,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:17,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-03-20 08:31:17,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:17,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-03-20 08:31:17,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:17,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-03-20 08:31:17,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:17,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-03-20 08:31:17,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:17,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-03-20 08:31:17,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:17,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-03-20 08:31:17,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:17,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-03-20 08:31:17,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:17,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-03-20 08:31:17,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:17,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-03-20 08:31:17,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:17,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-03-20 08:31:17,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:17,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-03-20 08:31:17,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:17,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-03-20 08:31:17,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:17,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-03-20 08:31:17,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:17,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-03-20 08:31:17,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:17,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-03-20 08:31:17,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:17,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-03-20 08:31:17,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:17,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-03-20 08:31:17,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:17,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-03-20 08:31:17,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:17,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-03-20 08:31:17,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:17,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-03-20 08:31:17,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:17,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-03-20 08:31:17,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:17,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-03-20 08:31:17,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:17,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-03-20 08:31:17,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:17,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-03-20 08:31:17,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:17,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-03-20 08:31:17,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:17,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-03-20 08:31:17,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:17,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-03-20 08:31:17,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:17,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-03-20 08:31:17,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:17,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-03-20 08:31:17,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:17,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-03-20 08:31:17,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:17,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-03-20 08:31:17,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:17,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-03-20 08:31:17,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:17,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-03-20 08:31:17,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:17,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-03-20 08:31:17,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:17,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-03-20 08:31:17,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:17,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-03-20 08:31:17,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:17,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2022-03-20 08:31:17,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:17,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2022-03-20 08:31:17,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:17,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2022-03-20 08:31:17,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:17,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2022-03-20 08:31:17,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:17,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2022-03-20 08:31:17,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:17,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2022-03-20 08:31:17,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:17,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2022-03-20 08:31:17,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:17,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2022-03-20 08:31:17,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:17,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2022-03-20 08:31:17,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:17,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2022-03-20 08:31:17,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:17,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 522 [2022-03-20 08:31:17,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:17,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 530 [2022-03-20 08:31:17,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:17,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2022-03-20 08:31:17,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:17,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 546 [2022-03-20 08:31:17,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:17,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2022-03-20 08:31:17,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:17,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 562 [2022-03-20 08:31:17,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:17,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 570 [2022-03-20 08:31:17,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:17,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 578 [2022-03-20 08:31:17,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:17,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 586 [2022-03-20 08:31:17,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:17,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 594 [2022-03-20 08:31:17,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:17,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2022-03-20 08:31:17,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:17,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 610 [2022-03-20 08:31:17,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:17,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 618 [2022-03-20 08:31:17,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:17,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 626 [2022-03-20 08:31:17,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:17,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 634 [2022-03-20 08:31:17,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:17,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 642 [2022-03-20 08:31:17,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:17,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 650 [2022-03-20 08:31:17,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:17,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 658 [2022-03-20 08:31:17,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:17,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 666 [2022-03-20 08:31:17,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:17,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 674 [2022-03-20 08:31:17,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:17,093 INFO L134 CoverageAnalysis]: Checked inductivity of 22378 backedges. 8914 proven. 4620 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2022-03-20 08:31:17,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:31:17,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025403378] [2022-03-20 08:31:17,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025403378] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:31:17,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025476081] [2022-03-20 08:31:17,093 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-20 08:31:17,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:31:17,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:31:17,095 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) [2022-03-20 08:31:17,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-03-20 08:31:17,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:17,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 1867 conjuncts, 136 conjunts are in the unsatisfiable core [2022-03-20 08:31:17,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:31:23,176 INFO L134 CoverageAnalysis]: Checked inductivity of 22378 backedges. 9372 proven. 4422 refuted. 0 times theorem prover too weak. 8584 trivial. 0 not checked. [2022-03-20 08:31:23,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:31:24,067 INFO L134 CoverageAnalysis]: Checked inductivity of 22378 backedges. 9110 proven. 4422 refuted. 0 times theorem prover too weak. 8846 trivial. 0 not checked. [2022-03-20 08:31:24,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025476081] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:31:24,067 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:31:24,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [138, 136, 136] total 207 [2022-03-20 08:31:24,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894853474] [2022-03-20 08:31:24,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:31:24,068 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 207 states [2022-03-20 08:31:24,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:31:24,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 207 interpolants. [2022-03-20 08:31:24,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9458, Invalid=33184, Unknown=0, NotChecked=0, Total=42642 [2022-03-20 08:31:24,073 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) [2022-03-20 08:31:31,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:31:31,656 INFO L93 Difference]: Finished difference Result 1184 states and 1402 transitions. [2022-03-20 08:31:31,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2022-03-20 08:31:31,657 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 [2022-03-20 08:31:31,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:31:31,659 INFO L225 Difference]: With dead ends: 1184 [2022-03-20 08:31:31,659 INFO L226 Difference]: Without dead ends: 903 [2022-03-20 08:31:31,663 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1845 GetRequests, 1506 SyntacticMatches, 0 SemanticMatches, 339 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32076 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=25607, Invalid=90333, Unknown=0, NotChecked=0, Total=115940 [2022-03-20 08:31:31,664 INFO L913 BasicCegarLoop]: 146 mSDtfsCounter, 1453 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 4223 mSolverCounterSat, 988 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s 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, 1.7s IncrementalHoareTripleChecker+Time [2022-03-20 08:31:31,664 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1454 Valid, 193 Invalid, 5211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [988 Valid, 4223 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-03-20 08:31:31,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2022-03-20 08:31:31,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 635. [2022-03-20 08:31:31,720 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) [2022-03-20 08:31:31,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 652 transitions. [2022-03-20 08:31:31,721 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 652 transitions. Word has length 686 [2022-03-20 08:31:31,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:31:31,721 INFO L478 AbstractCegarLoop]: Abstraction has 635 states and 652 transitions. [2022-03-20 08:31:31,721 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) [2022-03-20 08:31:31,721 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 652 transitions. [2022-03-20 08:31:31,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 689 [2022-03-20 08:31:31,725 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:31:31,725 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] [2022-03-20 08:31:31,743 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2022-03-20 08:31:31,925 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 [2022-03-20 08:31:31,926 INFO L403 AbstractCegarLoop]: === Iteration 83 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:31:31,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:31:31,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1428507974, now seen corresponding path program 80 times [2022-03-20 08:31:31,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:31:31,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059988757] [2022-03-20 08:31:31,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:31:31,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:31:32,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:36,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:31:36,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:36,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-03-20 08:31:36,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:36,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-03-20 08:31:36,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:36,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-03-20 08:31:36,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:36,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-03-20 08:31:36,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:36,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-03-20 08:31:36,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:36,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-03-20 08:31:36,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:36,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-03-20 08:31:36,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:36,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-03-20 08:31:36,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:36,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-03-20 08:31:36,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:36,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-03-20 08:31:36,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:36,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-03-20 08:31:36,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:36,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-03-20 08:31:36,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:36,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-03-20 08:31:36,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:36,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-03-20 08:31:36,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:36,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-03-20 08:31:36,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:36,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-03-20 08:31:36,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:36,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-03-20 08:31:36,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:36,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-03-20 08:31:36,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:36,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-03-20 08:31:36,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:36,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-03-20 08:31:36,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:36,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-03-20 08:31:36,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:36,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-03-20 08:31:36,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:36,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-03-20 08:31:36,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:36,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-03-20 08:31:36,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:36,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-03-20 08:31:36,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:36,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-03-20 08:31:36,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:36,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-03-20 08:31:36,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:36,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-03-20 08:31:36,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:36,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-03-20 08:31:36,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:36,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-03-20 08:31:36,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:36,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-03-20 08:31:36,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:36,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-03-20 08:31:36,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:36,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-03-20 08:31:36,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:36,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-03-20 08:31:36,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:36,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2022-03-20 08:31:36,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:36,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2022-03-20 08:31:36,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:36,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2022-03-20 08:31:36,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:36,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2022-03-20 08:31:36,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:36,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2022-03-20 08:31:36,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:36,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2022-03-20 08:31:36,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:36,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2022-03-20 08:31:36,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:36,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2022-03-20 08:31:36,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:36,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2022-03-20 08:31:36,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:36,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 492 [2022-03-20 08:31:36,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:36,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 500 [2022-03-20 08:31:36,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:36,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2022-03-20 08:31:36,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:36,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2022-03-20 08:31:36,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:36,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 524 [2022-03-20 08:31:36,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:36,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 532 [2022-03-20 08:31:36,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:36,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2022-03-20 08:31:36,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:36,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 548 [2022-03-20 08:31:36,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:36,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 556 [2022-03-20 08:31:36,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:36,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 564 [2022-03-20 08:31:36,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:36,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 572 [2022-03-20 08:31:36,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:36,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 580 [2022-03-20 08:31:36,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:36,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 588 [2022-03-20 08:31:36,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:36,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 596 [2022-03-20 08:31:36,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:36,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 604 [2022-03-20 08:31:36,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:36,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 612 [2022-03-20 08:31:36,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:36,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 620 [2022-03-20 08:31:36,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:36,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 628 [2022-03-20 08:31:36,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:36,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 636 [2022-03-20 08:31:36,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:36,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 644 [2022-03-20 08:31:36,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:36,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 652 [2022-03-20 08:31:36,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:36,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 660 [2022-03-20 08:31:36,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:36,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 668 [2022-03-20 08:31:36,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:36,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2022-03-20 08:31:36,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:36,240 INFO L134 CoverageAnalysis]: Checked inductivity of 22512 backedges. 8914 proven. 4754 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2022-03-20 08:31:36,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:31:36,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059988757] [2022-03-20 08:31:36,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059988757] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:31:36,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787226139] [2022-03-20 08:31:36,240 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 08:31:36,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:31:36,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:31:36,241 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) [2022-03-20 08:31:36,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-03-20 08:31:36,433 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 08:31:36,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 08:31:36,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 1877 conjuncts, 138 conjunts are in the unsatisfiable core [2022-03-20 08:31:36,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:31:41,220 INFO L134 CoverageAnalysis]: Checked inductivity of 22512 backedges. 4690 proven. 8978 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2022-03-20 08:31:41,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:31:42,139 INFO L134 CoverageAnalysis]: Checked inductivity of 22512 backedges. 4690 proven. 8978 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2022-03-20 08:31:42,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787226139] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:31:42,139 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:31:42,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [139, 72, 72] total 209 [2022-03-20 08:31:42,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603039436] [2022-03-20 08:31:42,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:31:42,140 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 209 states [2022-03-20 08:31:42,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:31:42,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 209 interpolants. [2022-03-20 08:31:42,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7182, Invalid=36290, Unknown=0, NotChecked=0, Total=43472 [2022-03-20 08:31:42,144 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) [2022-03-20 08:31:55,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:31:55,321 INFO L93 Difference]: Finished difference Result 1197 states and 1419 transitions. [2022-03-20 08:31:55,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 276 states. [2022-03-20 08:31:55,321 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 [2022-03-20 08:31:55,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:31:55,323 INFO L225 Difference]: With dead ends: 1197 [2022-03-20 08:31:55,323 INFO L226 Difference]: Without dead ends: 918 [2022-03-20 08:31:55,333 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1992 GetRequests, 1511 SyntacticMatches, 1 SemanticMatches, 480 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82609 ImplicationChecksByTransitivity, 15.3s TimeCoverageRelationStatistics Valid=38363, Invalid=193479, Unknown=0, NotChecked=0, Total=231842 [2022-03-20 08:31:55,333 INFO L913 BasicCegarLoop]: 213 mSDtfsCounter, 2314 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 9353 mSolverCounterSat, 1987 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s 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, 3.4s IncrementalHoareTripleChecker+Time [2022-03-20 08:31:55,333 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2315 Valid, 315 Invalid, 11340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1987 Valid, 9353 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-03-20 08:31:55,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 918 states. [2022-03-20 08:31:55,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 918 to 645. [2022-03-20 08:31:55,390 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) [2022-03-20 08:31:55,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 662 transitions. [2022-03-20 08:31:55,391 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 662 transitions. Word has length 688 [2022-03-20 08:31:55,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:31:55,391 INFO L478 AbstractCegarLoop]: Abstraction has 645 states and 662 transitions. [2022-03-20 08:31:55,391 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) [2022-03-20 08:31:55,391 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 662 transitions. [2022-03-20 08:31:55,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 699 [2022-03-20 08:31:55,395 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:31:55,395 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] [2022-03-20 08:31:55,413 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2022-03-20 08:31:55,595 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 [2022-03-20 08:31:55,595 INFO L403 AbstractCegarLoop]: === Iteration 84 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:31:55,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:31:55,596 INFO L85 PathProgramCache]: Analyzing trace with hash 443238705, now seen corresponding path program 81 times [2022-03-20 08:31:55,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:31:55,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523298502] [2022-03-20 08:31:55,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:31:55,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:31:55,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:59,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:31:59,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:59,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-03-20 08:31:59,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:59,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-03-20 08:31:59,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:59,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-03-20 08:31:59,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:59,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-03-20 08:31:59,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:59,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-03-20 08:31:59,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:59,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-03-20 08:31:59,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:59,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-03-20 08:31:59,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:59,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-03-20 08:31:59,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:59,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-03-20 08:31:59,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:59,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-03-20 08:31:59,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:59,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-03-20 08:31:59,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:59,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-03-20 08:31:59,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:59,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-03-20 08:31:59,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:59,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-03-20 08:31:59,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:59,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-03-20 08:31:59,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:59,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-03-20 08:31:59,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:59,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-03-20 08:31:59,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:59,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-03-20 08:31:59,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:59,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-03-20 08:31:59,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:59,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-03-20 08:31:59,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:59,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-03-20 08:31:59,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:59,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-03-20 08:31:59,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:59,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-03-20 08:31:59,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:59,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-03-20 08:31:59,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:59,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-03-20 08:31:59,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:59,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-03-20 08:31:59,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:59,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-03-20 08:31:59,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:59,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-03-20 08:31:59,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:59,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-03-20 08:31:59,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:59,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-03-20 08:31:59,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:59,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-03-20 08:31:59,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:59,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-03-20 08:31:59,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:59,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-03-20 08:31:59,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:59,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-03-20 08:31:59,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:59,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-03-20 08:31:59,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:59,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-03-20 08:31:59,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:59,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-03-20 08:31:59,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:31:59,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2022-03-20 08:31:59,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:00,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2022-03-20 08:32:00,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:00,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2022-03-20 08:32:00,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:00,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2022-03-20 08:32:00,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:00,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2022-03-20 08:32:00,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:00,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2022-03-20 08:32:00,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:00,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2022-03-20 08:32:00,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:00,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2022-03-20 08:32:00,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:00,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 510 [2022-03-20 08:32:00,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:00,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 518 [2022-03-20 08:32:00,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:00,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2022-03-20 08:32:00,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:00,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 534 [2022-03-20 08:32:00,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:00,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 542 [2022-03-20 08:32:00,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:00,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 550 [2022-03-20 08:32:00,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:00,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 558 [2022-03-20 08:32:00,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:00,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 566 [2022-03-20 08:32:00,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:00,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 574 [2022-03-20 08:32:00,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:00,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 582 [2022-03-20 08:32:00,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:00,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 590 [2022-03-20 08:32:00,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:00,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 598 [2022-03-20 08:32:00,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:00,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 606 [2022-03-20 08:32:00,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:00,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 614 [2022-03-20 08:32:00,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:00,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 622 [2022-03-20 08:32:00,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:00,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 630 [2022-03-20 08:32:00,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:00,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 638 [2022-03-20 08:32:00,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:00,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2022-03-20 08:32:00,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:00,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 654 [2022-03-20 08:32:00,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:00,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 662 [2022-03-20 08:32:00,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:00,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 670 [2022-03-20 08:32:00,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:00,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2022-03-20 08:32:00,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:00,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 686 [2022-03-20 08:32:00,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:00,042 INFO L134 CoverageAnalysis]: Checked inductivity of 23188 backedges. 9183 proven. 4893 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2022-03-20 08:32:00,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:32:00,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523298502] [2022-03-20 08:32:00,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523298502] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:32:00,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628011700] [2022-03-20 08:32:00,042 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-20 08:32:00,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:32:00,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:32:00,043 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) [2022-03-20 08:32:00,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-03-20 08:32:00,440 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 69 check-sat command(s) [2022-03-20 08:32:00,440 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 08:32:00,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 1904 conjuncts, 140 conjunts are in the unsatisfiable core [2022-03-20 08:32:00,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:32:05,324 INFO L134 CoverageAnalysis]: Checked inductivity of 23188 backedges. 4828 proven. 9248 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2022-03-20 08:32:05,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:32:06,246 INFO L134 CoverageAnalysis]: Checked inductivity of 23188 backedges. 4828 proven. 9248 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2022-03-20 08:32:06,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628011700] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:32:06,246 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:32:06,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [141, 73, 73] total 212 [2022-03-20 08:32:06,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201619339] [2022-03-20 08:32:06,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:32:06,248 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 212 states [2022-03-20 08:32:06,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:32:06,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 212 interpolants. [2022-03-20 08:32:06,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7391, Invalid=37341, Unknown=0, NotChecked=0, Total=44732 [2022-03-20 08:32:06,252 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) [2022-03-20 08:32:19,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:32:19,448 INFO L93 Difference]: Finished difference Result 1215 states and 1440 transitions. [2022-03-20 08:32:19,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 280 states. [2022-03-20 08:32:19,449 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 [2022-03-20 08:32:19,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:32:19,450 INFO L225 Difference]: With dead ends: 1215 [2022-03-20 08:32:19,450 INFO L226 Difference]: Without dead ends: 932 [2022-03-20 08:32:19,461 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 2021 GetRequests, 1533 SyntacticMatches, 1 SemanticMatches, 487 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85066 ImplicationChecksByTransitivity, 15.6s TimeCoverageRelationStatistics Valid=39479, Invalid=199153, Unknown=0, NotChecked=0, Total=238632 [2022-03-20 08:32:19,461 INFO L913 BasicCegarLoop]: 216 mSDtfsCounter, 2197 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 8895 mSolverCounterSat, 1867 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s 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, 3.2s IncrementalHoareTripleChecker+Time [2022-03-20 08:32:19,461 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2198 Valid, 308 Invalid, 10762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1867 Valid, 8895 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-03-20 08:32:19,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2022-03-20 08:32:19,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 655. [2022-03-20 08:32:19,521 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) [2022-03-20 08:32:19,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 672 transitions. [2022-03-20 08:32:19,521 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 672 transitions. Word has length 698 [2022-03-20 08:32:19,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:32:19,522 INFO L478 AbstractCegarLoop]: Abstraction has 655 states and 672 transitions. [2022-03-20 08:32:19,522 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) [2022-03-20 08:32:19,522 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 672 transitions. [2022-03-20 08:32:19,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 709 [2022-03-20 08:32:19,525 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:32:19,526 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] [2022-03-20 08:32:19,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0 [2022-03-20 08:32:19,726 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 [2022-03-20 08:32:19,726 INFO L403 AbstractCegarLoop]: === Iteration 85 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:32:19,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:32:19,726 INFO L85 PathProgramCache]: Analyzing trace with hash -2018854680, now seen corresponding path program 82 times [2022-03-20 08:32:19,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:32:19,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274036708] [2022-03-20 08:32:19,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:32:19,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:32:19,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:24,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:32:24,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:24,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-03-20 08:32:24,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:24,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-03-20 08:32:24,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:24,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-03-20 08:32:24,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:24,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-03-20 08:32:24,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:24,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-03-20 08:32:24,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:24,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-03-20 08:32:24,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:24,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-03-20 08:32:24,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:24,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-03-20 08:32:24,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:24,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-03-20 08:32:24,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:24,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-03-20 08:32:24,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:24,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-03-20 08:32:24,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:24,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-03-20 08:32:24,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:24,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-03-20 08:32:24,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:24,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-03-20 08:32:24,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:24,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-03-20 08:32:24,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:24,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-03-20 08:32:24,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:24,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-03-20 08:32:24,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:24,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-03-20 08:32:24,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:24,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-03-20 08:32:24,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:24,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-03-20 08:32:24,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:24,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-03-20 08:32:24,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:24,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-03-20 08:32:24,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:24,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-03-20 08:32:24,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:24,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-03-20 08:32:24,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:24,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-03-20 08:32:24,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:24,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-03-20 08:32:24,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:24,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-03-20 08:32:24,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:24,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-03-20 08:32:24,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:24,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-03-20 08:32:24,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:24,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-03-20 08:32:24,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:24,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-03-20 08:32:24,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:24,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-03-20 08:32:24,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:24,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-03-20 08:32:24,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:24,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2022-03-20 08:32:24,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:24,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2022-03-20 08:32:24,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:24,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2022-03-20 08:32:24,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:24,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2022-03-20 08:32:24,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:24,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2022-03-20 08:32:24,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:24,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2022-03-20 08:32:24,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:24,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2022-03-20 08:32:24,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:24,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2022-03-20 08:32:24,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:24,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2022-03-20 08:32:24,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:24,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2022-03-20 08:32:24,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:24,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2022-03-20 08:32:24,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:24,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2022-03-20 08:32:24,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:24,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 512 [2022-03-20 08:32:24,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:24,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 520 [2022-03-20 08:32:24,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:24,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 528 [2022-03-20 08:32:24,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:24,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 536 [2022-03-20 08:32:24,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:24,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 544 [2022-03-20 08:32:24,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:24,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 552 [2022-03-20 08:32:24,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:24,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 560 [2022-03-20 08:32:24,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:24,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2022-03-20 08:32:24,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:24,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 576 [2022-03-20 08:32:24,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:24,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 584 [2022-03-20 08:32:24,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:24,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 592 [2022-03-20 08:32:24,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:24,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 600 [2022-03-20 08:32:24,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:24,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 608 [2022-03-20 08:32:24,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:24,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 616 [2022-03-20 08:32:24,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:24,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 624 [2022-03-20 08:32:24,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:24,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 632 [2022-03-20 08:32:24,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:24,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 640 [2022-03-20 08:32:24,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:24,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 648 [2022-03-20 08:32:24,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:24,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 656 [2022-03-20 08:32:24,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:24,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 664 [2022-03-20 08:32:24,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:24,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 672 [2022-03-20 08:32:24,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:24,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 680 [2022-03-20 08:32:24,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:24,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 688 [2022-03-20 08:32:24,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:24,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 696 [2022-03-20 08:32:24,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:24,352 INFO L134 CoverageAnalysis]: Checked inductivity of 23874 backedges. 9456 proven. 5034 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2022-03-20 08:32:24,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:32:24,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274036708] [2022-03-20 08:32:24,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274036708] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:32:24,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317098476] [2022-03-20 08:32:24,352 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-20 08:32:24,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:32:24,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:32:24,353 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) [2022-03-20 08:32:24,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2022-03-20 08:32:24,556 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-20 08:32:24,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 08:32:24,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 1931 conjuncts, 142 conjunts are in the unsatisfiable core [2022-03-20 08:32:24,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:32:29,601 INFO L134 CoverageAnalysis]: Checked inductivity of 23874 backedges. 4968 proven. 9522 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2022-03-20 08:32:29,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:32:30,634 INFO L134 CoverageAnalysis]: Checked inductivity of 23874 backedges. 4968 proven. 9522 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2022-03-20 08:32:30,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317098476] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:32:30,635 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:32:30,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [143, 74, 74] total 215 [2022-03-20 08:32:30,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115475947] [2022-03-20 08:32:30,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:32:30,636 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 215 states [2022-03-20 08:32:30,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:32:30,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 215 interpolants. [2022-03-20 08:32:30,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7603, Invalid=38407, Unknown=0, NotChecked=0, Total=46010 [2022-03-20 08:32:30,639 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) [2022-03-20 08:32:44,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:32:44,912 INFO L93 Difference]: Finished difference Result 1233 states and 1461 transitions. [2022-03-20 08:32:44,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 284 states. [2022-03-20 08:32:44,912 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 [2022-03-20 08:32:44,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:32:44,914 INFO L225 Difference]: With dead ends: 1233 [2022-03-20 08:32:44,914 INFO L226 Difference]: Without dead ends: 946 [2022-03-20 08:32:44,929 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 [2022-03-20 08:32:44,929 INFO L913 BasicCegarLoop]: 219 mSDtfsCounter, 2132 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 10021 mSolverCounterSat, 1775 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s 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, 3.7s IncrementalHoareTripleChecker+Time [2022-03-20 08:32:44,930 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2133 Valid, 321 Invalid, 11796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1775 Valid, 10021 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-03-20 08:32:44,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2022-03-20 08:32:45,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 665. [2022-03-20 08:32:45,036 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) [2022-03-20 08:32:45,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 682 transitions. [2022-03-20 08:32:45,036 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 682 transitions. Word has length 708 [2022-03-20 08:32:45,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:32:45,037 INFO L478 AbstractCegarLoop]: Abstraction has 665 states and 682 transitions. [2022-03-20 08:32:45,037 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) [2022-03-20 08:32:45,037 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 682 transitions. [2022-03-20 08:32:45,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 719 [2022-03-20 08:32:45,041 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:32:45,041 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] [2022-03-20 08:32:45,060 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2022-03-20 08:32:45,241 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 [2022-03-20 08:32:45,241 INFO L403 AbstractCegarLoop]: === Iteration 86 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:32:45,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:32:45,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1754762785, now seen corresponding path program 83 times [2022-03-20 08:32:45,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:32:45,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052897335] [2022-03-20 08:32:45,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:32:45,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:32:45,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:49,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:32:49,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:49,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-03-20 08:32:49,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:49,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-03-20 08:32:49,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:49,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-03-20 08:32:49,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:49,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-03-20 08:32:49,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:49,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-03-20 08:32:49,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:49,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-03-20 08:32:49,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:49,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-03-20 08:32:49,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:49,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-03-20 08:32:49,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:49,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-03-20 08:32:49,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:49,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-03-20 08:32:49,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:49,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-03-20 08:32:49,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:49,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-03-20 08:32:49,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:49,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-03-20 08:32:49,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:49,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-03-20 08:32:49,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:49,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-03-20 08:32:49,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:49,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-03-20 08:32:49,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:49,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-03-20 08:32:49,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:49,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-03-20 08:32:49,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:49,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-03-20 08:32:49,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:49,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-03-20 08:32:49,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:49,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-03-20 08:32:49,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:49,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-03-20 08:32:49,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:49,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-03-20 08:32:49,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:49,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-03-20 08:32:49,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:49,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-03-20 08:32:49,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:49,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-03-20 08:32:49,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:49,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-03-20 08:32:49,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:49,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-03-20 08:32:49,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:49,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-03-20 08:32:49,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:49,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-03-20 08:32:49,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:49,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-03-20 08:32:49,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:49,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-03-20 08:32:49,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:49,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-03-20 08:32:49,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:49,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-03-20 08:32:49,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:49,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-03-20 08:32:49,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:49,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-03-20 08:32:49,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:49,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2022-03-20 08:32:49,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:49,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2022-03-20 08:32:49,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:49,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2022-03-20 08:32:49,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:49,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2022-03-20 08:32:49,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:49,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2022-03-20 08:32:49,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:49,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2022-03-20 08:32:49,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:49,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2022-03-20 08:32:49,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:49,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2022-03-20 08:32:49,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:49,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2022-03-20 08:32:49,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:49,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2022-03-20 08:32:49,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:49,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 522 [2022-03-20 08:32:49,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:49,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 530 [2022-03-20 08:32:49,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:49,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2022-03-20 08:32:49,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:49,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 546 [2022-03-20 08:32:49,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:49,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2022-03-20 08:32:49,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:49,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 562 [2022-03-20 08:32:49,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:49,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 570 [2022-03-20 08:32:49,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:49,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 578 [2022-03-20 08:32:49,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:49,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 586 [2022-03-20 08:32:49,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:49,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 594 [2022-03-20 08:32:49,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:49,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2022-03-20 08:32:49,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:49,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 610 [2022-03-20 08:32:49,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:49,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 618 [2022-03-20 08:32:49,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:49,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 626 [2022-03-20 08:32:49,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:49,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 634 [2022-03-20 08:32:49,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:49,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 642 [2022-03-20 08:32:49,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:49,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 650 [2022-03-20 08:32:49,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:49,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 658 [2022-03-20 08:32:49,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:49,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 666 [2022-03-20 08:32:49,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:49,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 674 [2022-03-20 08:32:49,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:49,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 682 [2022-03-20 08:32:49,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:49,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 690 [2022-03-20 08:32:49,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:49,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 698 [2022-03-20 08:32:49,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:49,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 706 [2022-03-20 08:32:49,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:32:49,965 INFO L134 CoverageAnalysis]: Checked inductivity of 24570 backedges. 9733 proven. 5177 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2022-03-20 08:32:49,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:32:49,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052897335] [2022-03-20 08:32:49,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052897335] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:32:49,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717408706] [2022-03-20 08:32:49,965 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-20 08:32:49,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:32:49,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:32:49,966 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) [2022-03-20 08:32:49,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2022-03-20 08:32:50,386 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 71 check-sat command(s) [2022-03-20 08:32:50,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 08:32:50,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 1958 conjuncts, 144 conjunts are in the unsatisfiable core [2022-03-20 08:32:50,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:32:57,010 INFO L134 CoverageAnalysis]: Checked inductivity of 24570 backedges. 9940 proven. 4970 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2022-03-20 08:32:57,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:32:58,043 INFO L134 CoverageAnalysis]: Checked inductivity of 24570 backedges. 9940 proven. 4970 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2022-03-20 08:32:58,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [717408706] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:32:58,043 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:32:58,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [145, 144, 144] total 218 [2022-03-20 08:32:58,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10398061] [2022-03-20 08:32:58,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:32:58,045 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 218 states [2022-03-20 08:32:58,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:32:58,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 218 interpolants. [2022-03-20 08:32:58,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10517, Invalid=36789, Unknown=0, NotChecked=0, Total=47306 [2022-03-20 08:32:58,049 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) [2022-03-20 08:33:07,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:33:07,215 INFO L93 Difference]: Finished difference Result 1242 states and 1472 transitions. [2022-03-20 08:33:07,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2022-03-20 08:33:07,216 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 [2022-03-20 08:33:07,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:33:07,218 INFO L225 Difference]: With dead ends: 1242 [2022-03-20 08:33:07,218 INFO L226 Difference]: Without dead ends: 951 [2022-03-20 08:33:07,226 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1934 GetRequests, 1576 SyntacticMatches, 0 SemanticMatches, 358 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35695 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=28624, Invalid=100616, Unknown=0, NotChecked=0, Total=129240 [2022-03-20 08:33:07,226 INFO L913 BasicCegarLoop]: 154 mSDtfsCounter, 1653 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 4809 mSolverCounterSat, 1035 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s 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, 2.1s IncrementalHoareTripleChecker+Time [2022-03-20 08:33:07,226 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1654 Valid, 216 Invalid, 5844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1035 Valid, 4809 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-03-20 08:33:07,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 951 states. [2022-03-20 08:33:07,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 951 to 667. [2022-03-20 08:33:07,317 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) [2022-03-20 08:33:07,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 684 transitions. [2022-03-20 08:33:07,319 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 684 transitions. Word has length 718 [2022-03-20 08:33:07,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:33:07,319 INFO L478 AbstractCegarLoop]: Abstraction has 667 states and 684 transitions. [2022-03-20 08:33:07,320 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) [2022-03-20 08:33:07,320 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 684 transitions. [2022-03-20 08:33:07,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 721 [2022-03-20 08:33:07,324 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:33:07,324 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] [2022-03-20 08:33:07,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2022-03-20 08:33:07,531 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 [2022-03-20 08:33:07,531 INFO L403 AbstractCegarLoop]: === Iteration 87 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:33:07,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:33:07,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1006155650, now seen corresponding path program 84 times [2022-03-20 08:33:07,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:33:07,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599279942] [2022-03-20 08:33:07,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:33:07,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:33:07,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:33:09,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:33:09,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:33:09,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-03-20 08:33:09,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:33:09,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-03-20 08:33:09,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:33:09,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-03-20 08:33:09,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:33:09,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-03-20 08:33:09,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:33:09,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-03-20 08:33:09,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:33:09,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-03-20 08:33:09,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:33:09,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-03-20 08:33:09,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:33:09,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-03-20 08:33:09,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:33:09,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-03-20 08:33:09,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:33:09,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-03-20 08:33:09,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:33:09,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-03-20 08:33:09,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:33:09,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-03-20 08:33:09,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:33:09,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-03-20 08:33:09,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:33:09,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-03-20 08:33:09,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:33:09,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-03-20 08:33:09,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:33:09,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-03-20 08:33:09,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:33:09,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-03-20 08:33:09,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:33:09,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-03-20 08:33:09,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:33:09,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-03-20 08:33:09,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:33:09,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-03-20 08:33:09,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:33:09,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-03-20 08:33:09,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:33:09,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-03-20 08:33:09,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:33:09,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-03-20 08:33:09,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:33:09,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-03-20 08:33:09,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:33:09,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-03-20 08:33:09,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:33:09,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-03-20 08:33:09,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:33:09,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-03-20 08:33:09,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:33:09,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-03-20 08:33:09,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:33:09,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-03-20 08:33:09,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:33:09,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-03-20 08:33:09,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:33:09,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-03-20 08:33:09,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:33:09,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-03-20 08:33:09,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:33:09,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-03-20 08:33:09,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:33:09,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2022-03-20 08:33:09,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:33:09,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2022-03-20 08:33:09,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:33:09,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2022-03-20 08:33:09,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:33:09,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2022-03-20 08:33:09,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:33:09,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2022-03-20 08:33:09,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:33:09,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2022-03-20 08:33:09,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:33:09,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2022-03-20 08:33:09,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:33:09,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2022-03-20 08:33:09,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:33:09,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2022-03-20 08:33:09,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:33:09,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 492 [2022-03-20 08:33:09,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:33:09,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 500 [2022-03-20 08:33:09,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:33:09,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2022-03-20 08:33:09,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:33:09,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2022-03-20 08:33:09,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:33:09,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 524 [2022-03-20 08:33:09,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:33:09,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 532 [2022-03-20 08:33:09,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:33:09,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2022-03-20 08:33:09,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:33:09,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 548 [2022-03-20 08:33:09,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:33:09,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 556 [2022-03-20 08:33:09,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:33:09,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 564 [2022-03-20 08:33:09,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:33:09,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 572 [2022-03-20 08:33:09,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:33:09,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 580 [2022-03-20 08:33:09,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:33:09,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 588 [2022-03-20 08:33:09,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:33:09,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 596 [2022-03-20 08:33:09,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:33:09,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 604 [2022-03-20 08:33:09,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:33:09,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 612 [2022-03-20 08:33:09,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:33:09,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 620 [2022-03-20 08:33:09,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:33:09,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 628 [2022-03-20 08:33:09,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:33:09,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 636 [2022-03-20 08:33:09,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:33:09,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 644 [2022-03-20 08:33:09,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:33:09,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 652 [2022-03-20 08:33:09,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:33:09,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 660 [2022-03-20 08:33:09,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:33:09,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 668 [2022-03-20 08:33:09,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:33:09,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2022-03-20 08:33:09,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:33:09,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 684 [2022-03-20 08:33:09,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:33:09,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 692 [2022-03-20 08:33:09,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:33:09,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 700 [2022-03-20 08:33:09,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:33:09,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 708 [2022-03-20 08:33:09,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:33:09,537 INFO L134 CoverageAnalysis]: Checked inductivity of 24712 backedges. 5110 proven. 9942 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2022-03-20 08:33:09,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:33:09,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599279942] [2022-03-20 08:33:09,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599279942] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:33:09,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825182633] [2022-03-20 08:33:09,537 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-20 08:33:09,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:33:09,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:33:09,539 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) [2022-03-20 08:33:09,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2022-03-20 08:33:10,037 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 72 check-sat command(s) [2022-03-20 08:33:10,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 08:33:10,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 1968 conjuncts, 145 conjunts are in the unsatisfiable core [2022-03-20 08:33:10,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:33:11,036 INFO L134 CoverageAnalysis]: Checked inductivity of 24712 backedges. 5252 proven. 9800 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2022-03-20 08:33:11,037 INFO L328 TraceCheckSpWp]: Computing backward predicates...