/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/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-examples/data_structures_set_multi_proc_trivial_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-30 20:15:52,419 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-30 20:15:52,420 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-30 20:15:52,491 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-30 20:15:52,510 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-30 20:15:52,512 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-30 20:15:52,513 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-30 20:15:52,516 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-30 20:15:52,516 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-30 20:15:52,517 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-30 20:15:52,519 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-30 20:15:52,524 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-30 20:15:52,525 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-30 20:15:52,527 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-30 20:15:52,528 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-30 20:15:52,528 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-30 20:15:52,534 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-30 20:15:52,541 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-30 20:15:52,542 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-30 20:15:52,542 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-30 20:15:52,543 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2022-01-30 20:15:52,574 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-30 20:15:52,575 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-30 20:15:52,575 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-30 20:15:52,575 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-30 20:15:52,576 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-30 20:15:52,576 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-30 20:15:52,577 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-30 20:15:52,577 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-30 20:15:52,577 INFO L138 SettingsManager]: * Use SBE=true [2022-01-30 20:15:52,577 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-30 20:15:52,578 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-30 20:15:52,578 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-30 20:15:52,578 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-30 20:15:52,578 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-30 20:15:52,579 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-30 20:15:52,579 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-30 20:15:52,579 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-30 20:15:52,579 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-30 20:15:52,579 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-30 20:15:52,579 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-30 20:15:52,579 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-30 20:15:52,579 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-30 20:15:52,580 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-30 20:15:52,580 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-30 20:15:52,580 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-30 20:15:52,580 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-30 20:15:52,580 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-30 20:15:52,580 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-30 20:15:52,580 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-30 20:15:52,580 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-30 20:15:52,581 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-30 20:15:52,581 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-30 20:15:52,581 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-30 20:15:52,581 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-30 20:15:52,849 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-30 20:15:52,876 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-30 20:15:52,878 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-30 20:15:52,879 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-30 20:15:52,882 INFO L275 PluginConnector]: CDTParser initialized [2022-01-30 20:15:52,883 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/data_structures_set_multi_proc_trivial_ground.i [2022-01-30 20:15:52,939 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9df1683b/d445e672644e4da59b8882c018ebcc26/FLAG0139598e3 [2022-01-30 20:15:53,344 INFO L306 CDTParser]: Found 1 translation units. [2022-01-30 20:15:53,345 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/data_structures_set_multi_proc_trivial_ground.i [2022-01-30 20:15:53,363 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9df1683b/d445e672644e4da59b8882c018ebcc26/FLAG0139598e3 [2022-01-30 20:15:53,732 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9df1683b/d445e672644e4da59b8882c018ebcc26 [2022-01-30 20:15:53,735 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-30 20:15:53,737 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-30 20:15:53,739 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-30 20:15:53,739 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-30 20:15:53,742 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-30 20:15:53,743 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 08:15:53" (1/1) ... [2022-01-30 20:15:53,744 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7221a586 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 08:15:53, skipping insertion in model container [2022-01-30 20:15:53,744 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 08:15:53" (1/1) ... [2022-01-30 20:15:53,751 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-30 20:15:53,766 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-30 20:15:53,952 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/data_structures_set_multi_proc_trivial_ground.i[838,851] [2022-01-30 20:15:54,005 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-30 20:15:54,013 INFO L203 MainTranslator]: Completed pre-run [2022-01-30 20:15:54,022 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/data_structures_set_multi_proc_trivial_ground.i[838,851] [2022-01-30 20:15:54,033 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-30 20:15:54,043 INFO L208 MainTranslator]: Completed translation [2022-01-30 20:15:54,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 08:15:54 WrapperNode [2022-01-30 20:15:54,044 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-30 20:15:54,045 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-30 20:15:54,045 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-30 20:15:54,045 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-30 20:15:54,054 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 08:15:54" (1/1) ... [2022-01-30 20:15:54,054 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 08:15:54" (1/1) ... [2022-01-30 20:15:54,061 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 08:15:54" (1/1) ... [2022-01-30 20:15:54,061 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 08:15:54" (1/1) ... [2022-01-30 20:15:54,069 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 08:15:54" (1/1) ... [2022-01-30 20:15:54,074 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 08:15:54" (1/1) ... [2022-01-30 20:15:54,076 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 08:15:54" (1/1) ... [2022-01-30 20:15:54,079 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-30 20:15:54,079 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-30 20:15:54,080 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-30 20:15:54,080 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-30 20:15:54,081 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 08:15:54" (1/1) ... [2022-01-30 20:15:54,089 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-30 20:15:54,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-30 20:15:54,112 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) [2022-01-30 20:15:54,140 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 [2022-01-30 20:15:54,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-30 20:15:54,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-30 20:15:54,161 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-30 20:15:54,161 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-30 20:15:54,162 INFO L138 BoogieDeclarations]: Found implementation of procedure insert [2022-01-30 20:15:54,163 INFO L138 BoogieDeclarations]: Found implementation of procedure elem_exists [2022-01-30 20:15:54,163 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-30 20:15:54,164 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-30 20:15:54,164 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-30 20:15:54,164 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-01-30 20:15:54,164 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-01-30 20:15:54,164 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-30 20:15:54,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-30 20:15:54,164 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-30 20:15:54,164 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-30 20:15:54,165 INFO L130 BoogieDeclarations]: Found specification of procedure insert [2022-01-30 20:15:54,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-30 20:15:54,165 INFO L130 BoogieDeclarations]: Found specification of procedure elem_exists [2022-01-30 20:15:54,165 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-30 20:15:54,165 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-30 20:15:54,165 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-30 20:15:54,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-30 20:15:54,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-30 20:15:54,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-30 20:15:54,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-30 20:15:54,262 INFO L234 CfgBuilder]: Building ICFG [2022-01-30 20:15:54,263 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-30 20:15:54,519 INFO L275 CfgBuilder]: Performing block encoding [2022-01-30 20:15:54,525 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-30 20:15:54,526 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2022-01-30 20:15:54,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 08:15:54 BoogieIcfgContainer [2022-01-30 20:15:54,530 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-30 20:15:54,531 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-30 20:15:54,532 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-30 20:15:54,535 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-30 20:15:54,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.01 08:15:53" (1/3) ... [2022-01-30 20:15:54,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e4e6d16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 08:15:54, skipping insertion in model container [2022-01-30 20:15:54,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 08:15:54" (2/3) ... [2022-01-30 20:15:54,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e4e6d16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 08:15:54, skipping insertion in model container [2022-01-30 20:15:54,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 08:15:54" (3/3) ... [2022-01-30 20:15:54,538 INFO L111 eAbstractionObserver]: Analyzing ICFG data_structures_set_multi_proc_trivial_ground.i [2022-01-30 20:15:54,543 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-30 20:15:54,543 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-30 20:15:54,597 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-30 20:15:54,604 INFO L339 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=PETRI_NET, 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, mLoopAccelerationTechnique=FAST_UPR [2022-01-30 20:15:54,605 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-30 20:15:54,631 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 47 states have (on average 1.5106382978723405) internal successors, (71), 48 states have internal predecessors, (71), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-01-30 20:15:54,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-30 20:15:54,637 INFO L506 BasicCegarLoop]: Found error trace [2022-01-30 20:15:54,637 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-30 20:15:54,638 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-30 20:15:54,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-30 20:15:54,643 INFO L85 PathProgramCache]: Analyzing trace with hash 183486019, now seen corresponding path program 1 times [2022-01-30 20:15:54,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-30 20:15:54,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956656993] [2022-01-30 20:15:54,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-30 20:15:54,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-30 20:15:54,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 20:15:54,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-30 20:15:54,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 20:15:54,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-30 20:15:54,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-30 20:15:54,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956656993] [2022-01-30 20:15:54,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956656993] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-30 20:15:54,823 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-30 20:15:54,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-30 20:15:54,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341891285] [2022-01-30 20:15:54,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-30 20:15:54,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-30 20:15:54,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-30 20:15:54,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-30 20:15:54,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-30 20:15:54,859 INFO L87 Difference]: Start difference. First operand has 61 states, 47 states have (on average 1.5106382978723405) internal successors, (71), 48 states have internal predecessors, (71), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 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) [2022-01-30 20:15:55,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-30 20:15:55,198 INFO L93 Difference]: Finished difference Result 150 states and 228 transitions. [2022-01-30 20:15:55,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-30 20:15:55,201 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 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 14 [2022-01-30 20:15:55,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-30 20:15:55,208 INFO L225 Difference]: With dead ends: 150 [2022-01-30 20:15:55,208 INFO L226 Difference]: Without dead ends: 89 [2022-01-30 20:15:55,211 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-30 20:15:55,214 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 121 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-30 20:15:55,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 68 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-30 20:15:55,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-01-30 20:15:55,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 57. [2022-01-30 20:15:55,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 45 states have (on average 1.2666666666666666) internal successors, (57), 45 states have internal predecessors, (57), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-30 20:15:55,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 70 transitions. [2022-01-30 20:15:55,265 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 70 transitions. Word has length 14 [2022-01-30 20:15:55,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-30 20:15:55,265 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 70 transitions. [2022-01-30 20:15:55,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 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) [2022-01-30 20:15:55,265 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 70 transitions. [2022-01-30 20:15:55,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-30 20:15:55,266 INFO L506 BasicCegarLoop]: Found error trace [2022-01-30 20:15:55,267 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-30 20:15:55,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-30 20:15:55,267 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-30 20:15:55,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-30 20:15:55,268 INFO L85 PathProgramCache]: Analyzing trace with hash -210736667, now seen corresponding path program 1 times [2022-01-30 20:15:55,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-30 20:15:55,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868839764] [2022-01-30 20:15:55,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-30 20:15:55,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-30 20:15:55,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 20:15:55,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-30 20:15:55,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 20:15:55,364 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-30 20:15:55,365 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-30 20:15:55,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868839764] [2022-01-30 20:15:55,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868839764] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-30 20:15:55,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109651593] [2022-01-30 20:15:55,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-30 20:15:55,366 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-30 20:15:55,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-30 20:15:55,370 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) [2022-01-30 20:15:55,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-30 20:15:55,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 20:15:55,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-30 20:15:55,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-30 20:15:55,527 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-30 20:15:55,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-30 20:15:55,609 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-30 20:15:55,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109651593] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-30 20:15:55,610 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-30 20:15:55,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2022-01-30 20:15:55,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481741545] [2022-01-30 20:15:55,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-30 20:15:55,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-30 20:15:55,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-30 20:15:55,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-30 20:15:55,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-30 20:15:55,613 INFO L87 Difference]: Start difference. First operand 57 states and 70 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-30 20:15:56,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-30 20:15:56,099 INFO L93 Difference]: Finished difference Result 235 states and 315 transitions. [2022-01-30 20:15:56,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-30 20:15:56,100 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-01-30 20:15:56,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-30 20:15:56,108 INFO L225 Difference]: With dead ends: 235 [2022-01-30 20:15:56,109 INFO L226 Difference]: Without dead ends: 187 [2022-01-30 20:15:56,110 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2022-01-30 20:15:56,111 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 274 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-30 20:15:56,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [279 Valid, 82 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-30 20:15:56,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2022-01-30 20:15:56,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 63. [2022-01-30 20:15:56,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 51 states have (on average 1.2352941176470589) internal successors, (63), 51 states have internal predecessors, (63), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-30 20:15:56,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 76 transitions. [2022-01-30 20:15:56,127 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 76 transitions. Word has length 16 [2022-01-30 20:15:56,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-30 20:15:56,128 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 76 transitions. [2022-01-30 20:15:56,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-30 20:15:56,128 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 76 transitions. [2022-01-30 20:15:56,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-30 20:15:56,129 INFO L506 BasicCegarLoop]: Found error trace [2022-01-30 20:15:56,129 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-30 20:15:56,148 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-30 20:15:56,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-30 20:15:56,339 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-30 20:15:56,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-30 20:15:56,340 INFO L85 PathProgramCache]: Analyzing trace with hash 44339659, now seen corresponding path program 2 times [2022-01-30 20:15:56,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-30 20:15:56,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592869445] [2022-01-30 20:15:56,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-30 20:15:56,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-30 20:15:56,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 20:15:56,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-30 20:15:56,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 20:15:56,419 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-30 20:15:56,419 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-30 20:15:56,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592869445] [2022-01-30 20:15:56,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592869445] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-30 20:15:56,420 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-30 20:15:56,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-30 20:15:56,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560575786] [2022-01-30 20:15:56,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-30 20:15:56,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-30 20:15:56,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-30 20:15:56,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-30 20:15:56,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-30 20:15:56,422 INFO L87 Difference]: Start difference. First operand 63 states and 76 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 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) [2022-01-30 20:15:56,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-30 20:15:56,516 INFO L93 Difference]: Finished difference Result 116 states and 144 transitions. [2022-01-30 20:15:56,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-30 20:15:56,517 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 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 22 [2022-01-30 20:15:56,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-30 20:15:56,518 INFO L225 Difference]: With dead ends: 116 [2022-01-30 20:15:56,518 INFO L226 Difference]: Without dead ends: 67 [2022-01-30 20:15:56,518 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-30 20:15:56,519 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 89 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-30 20:15:56,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 60 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-30 20:15:56,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-01-30 20:15:56,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 65. [2022-01-30 20:15:56,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 53 states have (on average 1.2075471698113207) internal successors, (64), 53 states have internal predecessors, (64), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-30 20:15:56,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 77 transitions. [2022-01-30 20:15:56,530 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 77 transitions. Word has length 22 [2022-01-30 20:15:56,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-30 20:15:56,530 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 77 transitions. [2022-01-30 20:15:56,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 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) [2022-01-30 20:15:56,531 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 77 transitions. [2022-01-30 20:15:56,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-01-30 20:15:56,532 INFO L506 BasicCegarLoop]: Found error trace [2022-01-30 20:15:56,532 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-30 20:15:56,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-30 20:15:56,532 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-30 20:15:56,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-30 20:15:56,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1878506317, now seen corresponding path program 1 times [2022-01-30 20:15:56,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-30 20:15:56,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041998026] [2022-01-30 20:15:56,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-30 20:15:56,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-30 20:15:56,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 20:15:56,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-30 20:15:56,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 20:15:56,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-30 20:15:56,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 20:15:56,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-01-30 20:15:56,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 20:15:56,599 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-30 20:15:56,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-30 20:15:56,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041998026] [2022-01-30 20:15:56,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041998026] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-30 20:15:56,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-30 20:15:56,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-30 20:15:56,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716230582] [2022-01-30 20:15:56,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-30 20:15:56,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-30 20:15:56,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-30 20:15:56,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-30 20:15:56,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-30 20:15:56,602 INFO L87 Difference]: Start difference. First operand 65 states and 77 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-30 20:15:56,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-30 20:15:56,732 INFO L93 Difference]: Finished difference Result 129 states and 158 transitions. [2022-01-30 20:15:56,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-30 20:15:56,733 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 41 [2022-01-30 20:15:56,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-30 20:15:56,734 INFO L225 Difference]: With dead ends: 129 [2022-01-30 20:15:56,734 INFO L226 Difference]: Without dead ends: 84 [2022-01-30 20:15:56,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-30 20:15:56,745 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 90 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-30 20:15:56,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 50 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-30 20:15:56,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-01-30 20:15:56,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 66. [2022-01-30 20:15:56,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 54 states have (on average 1.2037037037037037) internal successors, (65), 54 states have internal predecessors, (65), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-30 20:15:56,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 78 transitions. [2022-01-30 20:15:56,766 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 78 transitions. Word has length 41 [2022-01-30 20:15:56,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-30 20:15:56,767 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 78 transitions. [2022-01-30 20:15:56,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-30 20:15:56,767 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 78 transitions. [2022-01-30 20:15:56,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-30 20:15:56,771 INFO L506 BasicCegarLoop]: Found error trace [2022-01-30 20:15:56,771 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-30 20:15:56,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-30 20:15:56,772 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-30 20:15:56,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-30 20:15:56,772 INFO L85 PathProgramCache]: Analyzing trace with hash -805252181, now seen corresponding path program 1 times [2022-01-30 20:15:56,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-30 20:15:56,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476912656] [2022-01-30 20:15:56,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-30 20:15:56,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-30 20:15:56,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 20:15:56,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-30 20:15:56,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 20:15:56,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-30 20:15:56,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 20:15:56,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-30 20:15:56,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 20:15:56,920 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-30 20:15:56,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-30 20:15:56,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476912656] [2022-01-30 20:15:56,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476912656] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-30 20:15:56,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74248116] [2022-01-30 20:15:56,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-30 20:15:56,921 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-30 20:15:56,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-30 20:15:56,925 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) [2022-01-30 20:15:56,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-30 20:15:56,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 20:15:57,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-30 20:15:57,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-30 20:15:57,114 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-30 20:15:57,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-30 20:15:57,246 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-30 20:15:57,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74248116] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-30 20:15:57,247 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-30 20:15:57,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 16 [2022-01-30 20:15:57,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234393701] [2022-01-30 20:15:57,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-30 20:15:57,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-30 20:15:57,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-30 20:15:57,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-30 20:15:57,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2022-01-30 20:15:57,249 INFO L87 Difference]: Start difference. First operand 66 states and 78 transitions. Second operand has 16 states, 16 states have (on average 3.9375) internal successors, (63), 14 states have internal predecessors, (63), 2 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-30 20:15:58,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-30 20:15:58,668 INFO L93 Difference]: Finished difference Result 590 states and 825 transitions. [2022-01-30 20:15:58,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-30 20:15:58,668 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.9375) internal successors, (63), 14 states have internal predecessors, (63), 2 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 43 [2022-01-30 20:15:58,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-30 20:15:58,672 INFO L225 Difference]: With dead ends: 590 [2022-01-30 20:15:58,672 INFO L226 Difference]: Without dead ends: 539 [2022-01-30 20:15:58,673 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 582 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=729, Invalid=1721, Unknown=0, NotChecked=0, Total=2450 [2022-01-30 20:15:58,674 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 1112 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 1029 mSolverCounterSat, 733 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1116 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 1762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 733 IncrementalHoareTripleChecker+Valid, 1029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-30 20:15:58,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1116 Valid, 55 Invalid, 1762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [733 Valid, 1029 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-30 20:15:58,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2022-01-30 20:15:58,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 95. [2022-01-30 20:15:58,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 80 states have (on average 1.175) internal successors, (94), 80 states have internal predecessors, (94), 10 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-01-30 20:15:58,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 113 transitions. [2022-01-30 20:15:58,699 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 113 transitions. Word has length 43 [2022-01-30 20:15:58,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-30 20:15:58,699 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 113 transitions. [2022-01-30 20:15:58,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.9375) internal successors, (63), 14 states have internal predecessors, (63), 2 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-30 20:15:58,699 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 113 transitions. [2022-01-30 20:15:58,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-30 20:15:58,700 INFO L506 BasicCegarLoop]: Found error trace [2022-01-30 20:15:58,700 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-30 20:15:58,726 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-30 20:15:58,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-30 20:15:58,916 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-30 20:15:58,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-30 20:15:58,916 INFO L85 PathProgramCache]: Analyzing trace with hash 2137511101, now seen corresponding path program 2 times [2022-01-30 20:15:58,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-30 20:15:58,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81854739] [2022-01-30 20:15:58,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-30 20:15:58,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-30 20:15:58,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 20:15:59,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-30 20:15:59,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 20:15:59,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-01-30 20:15:59,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 20:15:59,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-01-30 20:15:59,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 20:15:59,033 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2022-01-30 20:15:59,033 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-30 20:15:59,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81854739] [2022-01-30 20:15:59,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81854739] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-30 20:15:59,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-30 20:15:59,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-30 20:15:59,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68991351] [2022-01-30 20:15:59,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-30 20:15:59,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-30 20:15:59,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-30 20:15:59,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-30 20:15:59,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-30 20:15:59,035 INFO L87 Difference]: Start difference. First operand 95 states and 113 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-30 20:15:59,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-30 20:15:59,173 INFO L93 Difference]: Finished difference Result 151 states and 186 transitions. [2022-01-30 20:15:59,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-30 20:15:59,174 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 57 [2022-01-30 20:15:59,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-30 20:15:59,175 INFO L225 Difference]: With dead ends: 151 [2022-01-30 20:15:59,175 INFO L226 Difference]: Without dead ends: 103 [2022-01-30 20:15:59,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-30 20:15:59,176 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 65 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-30 20:15:59,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 55 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-30 20:15:59,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-01-30 20:15:59,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 101. [2022-01-30 20:15:59,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 85 states have (on average 1.1647058823529413) internal successors, (99), 84 states have internal predecessors, (99), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (12), 11 states have call predecessors, (12), 9 states have call successors, (12) [2022-01-30 20:15:59,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 121 transitions. [2022-01-30 20:15:59,190 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 121 transitions. Word has length 57 [2022-01-30 20:15:59,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-30 20:15:59,190 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 121 transitions. [2022-01-30 20:15:59,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-30 20:15:59,190 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 121 transitions. [2022-01-30 20:15:59,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-30 20:15:59,191 INFO L506 BasicCegarLoop]: Found error trace [2022-01-30 20:15:59,191 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-30 20:15:59,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-30 20:15:59,192 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-30 20:15:59,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-30 20:15:59,192 INFO L85 PathProgramCache]: Analyzing trace with hash -739866892, now seen corresponding path program 1 times [2022-01-30 20:15:59,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-30 20:15:59,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115417249] [2022-01-30 20:15:59,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-30 20:15:59,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-30 20:15:59,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 20:15:59,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-30 20:15:59,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 20:15:59,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-01-30 20:15:59,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 20:15:59,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-01-30 20:15:59,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 20:15:59,276 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2022-01-30 20:15:59,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-30 20:15:59,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115417249] [2022-01-30 20:15:59,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115417249] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-30 20:15:59,277 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-30 20:15:59,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-30 20:15:59,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162764491] [2022-01-30 20:15:59,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-30 20:15:59,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-30 20:15:59,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-30 20:15:59,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-30 20:15:59,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-30 20:15:59,281 INFO L87 Difference]: Start difference. First operand 101 states and 121 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-30 20:15:59,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-30 20:15:59,379 INFO L93 Difference]: Finished difference Result 121 states and 145 transitions. [2022-01-30 20:15:59,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-30 20:15:59,379 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 57 [2022-01-30 20:15:59,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-30 20:15:59,380 INFO L225 Difference]: With dead ends: 121 [2022-01-30 20:15:59,380 INFO L226 Difference]: Without dead ends: 0 [2022-01-30 20:15:59,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-01-30 20:15:59,381 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 47 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-30 20:15:59,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 32 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-30 20:15:59,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-30 20:15:59,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-30 20:15:59,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-30 20:15:59,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-30 20:15:59,383 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 57 [2022-01-30 20:15:59,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-30 20:15:59,384 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-30 20:15:59,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-30 20:15:59,384 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-30 20:15:59,384 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-30 20:15:59,386 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-30 20:15:59,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-30 20:15:59,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-01-30 20:15:59,570 INFO L858 garLoopResultBuilder]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2022-01-30 20:15:59,570 INFO L858 garLoopResultBuilder]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2022-01-30 20:15:59,570 INFO L858 garLoopResultBuilder]: For program point L12-1(line 12) no Hoare annotation was computed. [2022-01-30 20:15:59,571 INFO L861 garLoopResultBuilder]: At program point elem_existsENTRY(lines 20 26) the Hoare annotation is: true [2022-01-30 20:15:59,571 INFO L858 garLoopResultBuilder]: For program point elem_existsEXIT(lines 20 26) no Hoare annotation was computed. [2022-01-30 20:15:59,571 INFO L858 garLoopResultBuilder]: For program point L23(line 23) no Hoare annotation was computed. [2022-01-30 20:15:59,571 INFO L858 garLoopResultBuilder]: For program point L22-2(lines 22 24) no Hoare annotation was computed. [2022-01-30 20:15:59,571 INFO L854 garLoopResultBuilder]: At program point L22-3(lines 22 24) the Hoare annotation is: (and (<= 0 elem_exists_~i~0) (= elem_exists_~size |elem_exists_#in~size|)) [2022-01-30 20:15:59,571 INFO L858 garLoopResultBuilder]: For program point L22-4(lines 22 24) no Hoare annotation was computed. [2022-01-30 20:15:59,571 INFO L858 garLoopResultBuilder]: For program point elem_existsFINAL(lines 20 26) no Hoare annotation was computed. [2022-01-30 20:15:59,571 INFO L861 garLoopResultBuilder]: At program point insertENTRY(lines 16 19) the Hoare annotation is: true [2022-01-30 20:15:59,571 INFO L858 garLoopResultBuilder]: For program point insertFINAL(lines 16 19) no Hoare annotation was computed. [2022-01-30 20:15:59,572 INFO L858 garLoopResultBuilder]: For program point insertEXIT(lines 16 19) no Hoare annotation was computed. [2022-01-30 20:15:59,572 INFO L858 garLoopResultBuilder]: For program point mainEXIT(lines 27 67) no Hoare annotation was computed. [2022-01-30 20:15:59,572 INFO L854 garLoopResultBuilder]: At program point L52(line 52) the Hoare annotation is: (and (= main_~x~0 0) (= main_~n~0 0)) [2022-01-30 20:15:59,572 INFO L858 garLoopResultBuilder]: For program point L52-1(line 52) no Hoare annotation was computed. [2022-01-30 20:15:59,572 INFO L858 garLoopResultBuilder]: For program point L52-2(lines 52 54) no Hoare annotation was computed. [2022-01-30 20:15:59,572 INFO L858 garLoopResultBuilder]: For program point L52-4(lines 52 54) no Hoare annotation was computed. [2022-01-30 20:15:59,572 INFO L858 garLoopResultBuilder]: For program point L61-2(lines 61 65) no Hoare annotation was computed. [2022-01-30 20:15:59,572 INFO L854 garLoopResultBuilder]: At program point L61-3(lines 61 65) the Hoare annotation is: (and (= main_~x~0 0) (= main_~n~0 0)) [2022-01-30 20:15:59,572 INFO L858 garLoopResultBuilder]: For program point L61-4(lines 61 65) no Hoare annotation was computed. [2022-01-30 20:15:59,572 INFO L854 garLoopResultBuilder]: At program point L53(line 53) the Hoare annotation is: false [2022-01-30 20:15:59,573 INFO L858 garLoopResultBuilder]: For program point L53-1(line 53) no Hoare annotation was computed. [2022-01-30 20:15:59,573 INFO L858 garLoopResultBuilder]: For program point L62-2(lines 62 64) no Hoare annotation was computed. [2022-01-30 20:15:59,573 INFO L854 garLoopResultBuilder]: At program point L62-3(lines 62 64) the Hoare annotation is: false [2022-01-30 20:15:59,573 INFO L858 garLoopResultBuilder]: For program point mainFINAL(lines 27 67) no Hoare annotation was computed. [2022-01-30 20:15:59,573 INFO L854 garLoopResultBuilder]: At program point L63(line 63) the Hoare annotation is: false [2022-01-30 20:15:59,573 INFO L858 garLoopResultBuilder]: For program point L63-1(line 63) no Hoare annotation was computed. [2022-01-30 20:15:59,573 INFO L854 garLoopResultBuilder]: At program point mainENTRY(lines 27 67) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2022-01-30 20:15:59,573 INFO L858 garLoopResultBuilder]: For program point L55-2(lines 55 59) no Hoare annotation was computed. [2022-01-30 20:15:59,573 INFO L854 garLoopResultBuilder]: At program point L55-3(lines 55 59) the Hoare annotation is: (and (= main_~x~0 0) (= main_~n~0 0)) [2022-01-30 20:15:59,573 INFO L858 garLoopResultBuilder]: For program point L47-2(lines 47 50) no Hoare annotation was computed. [2022-01-30 20:15:59,574 INFO L854 garLoopResultBuilder]: At program point L47-3(lines 47 50) the Hoare annotation is: (and (= main_~x~0 0) (= main_~n~0 0)) [2022-01-30 20:15:59,574 INFO L858 garLoopResultBuilder]: For program point L47-4(lines 47 50) no Hoare annotation was computed. [2022-01-30 20:15:59,574 INFO L858 garLoopResultBuilder]: For program point L39-2(lines 39 43) no Hoare annotation was computed. [2022-01-30 20:15:59,574 INFO L854 garLoopResultBuilder]: At program point L39-3(lines 39 43) the Hoare annotation is: (and (= main_~x~0 0) (= main_~n~0 0)) [2022-01-30 20:15:59,574 INFO L858 garLoopResultBuilder]: For program point L39-4(lines 39 43) no Hoare annotation was computed. [2022-01-30 20:15:59,574 INFO L858 garLoopResultBuilder]: For program point L56-2(lines 56 58) no Hoare annotation was computed. [2022-01-30 20:15:59,574 INFO L854 garLoopResultBuilder]: At program point L56-3(lines 56 58) the Hoare annotation is: false [2022-01-30 20:15:59,574 INFO L858 garLoopResultBuilder]: For program point L40-2(lines 40 42) no Hoare annotation was computed. [2022-01-30 20:15:59,574 INFO L854 garLoopResultBuilder]: At program point L40-3(lines 40 42) the Hoare annotation is: false [2022-01-30 20:15:59,574 INFO L854 garLoopResultBuilder]: At program point L57(line 57) the Hoare annotation is: false [2022-01-30 20:15:59,574 INFO L858 garLoopResultBuilder]: For program point L57-1(line 57) no Hoare annotation was computed. [2022-01-30 20:15:59,575 INFO L854 garLoopResultBuilder]: At program point L41(line 41) the Hoare annotation is: false [2022-01-30 20:15:59,575 INFO L858 garLoopResultBuilder]: For program point L41-1(line 41) no Hoare annotation was computed. [2022-01-30 20:15:59,575 INFO L858 garLoopResultBuilder]: For program point L33-2(lines 33 36) no Hoare annotation was computed. [2022-01-30 20:15:59,575 INFO L854 garLoopResultBuilder]: At program point L33-3(lines 33 36) the Hoare annotation is: (= main_~n~0 0) [2022-01-30 20:15:59,575 INFO L858 garLoopResultBuilder]: For program point L33-4(lines 33 36) no Hoare annotation was computed. [2022-01-30 20:15:59,575 INFO L858 garLoopResultBuilder]: For program point L51-2(lines 51 60) no Hoare annotation was computed. [2022-01-30 20:15:59,575 INFO L854 garLoopResultBuilder]: At program point L51-3(lines 51 60) the Hoare annotation is: (and (= main_~x~0 0) (= main_~n~0 0)) [2022-01-30 20:15:59,575 INFO L858 garLoopResultBuilder]: For program point L51-4(lines 51 60) no Hoare annotation was computed. [2022-01-30 20:15:59,575 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2022-01-30 20:15:59,575 INFO L854 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-01-30 20:15:59,576 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2022-01-30 20:15:59,576 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-01-30 20:15:59,576 INFO L861 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-01-30 20:15:59,576 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-01-30 20:15:59,576 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-01-30 20:15:59,576 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(line 13) the Hoare annotation is: true [2022-01-30 20:15:59,576 INFO L858 garLoopResultBuilder]: For program point L13(line 13) no Hoare annotation was computed. [2022-01-30 20:15:59,576 INFO L858 garLoopResultBuilder]: For program point L13-1(line 13) no Hoare annotation was computed. [2022-01-30 20:15:59,576 INFO L858 garLoopResultBuilder]: For program point L13-3(line 13) no Hoare annotation was computed. [2022-01-30 20:15:59,576 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(line 13) no Hoare annotation was computed. [2022-01-30 20:15:59,576 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2022-01-30 20:15:59,579 INFO L732 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1] [2022-01-30 20:15:59,580 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-30 20:15:59,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.01 08:15:59 BoogieIcfgContainer [2022-01-30 20:15:59,593 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-30 20:15:59,593 INFO L158 Benchmark]: Toolchain (without parser) took 5856.81ms. Allocated memory was 186.6MB in the beginning and 235.9MB in the end (delta: 49.3MB). Free memory was 130.4MB in the beginning and 95.2MB in the end (delta: 35.2MB). Peak memory consumption was 85.0MB. Max. memory is 8.0GB. [2022-01-30 20:15:59,594 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 186.6MB. Free memory is still 146.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-30 20:15:59,594 INFO L158 Benchmark]: CACSL2BoogieTranslator took 305.42ms. Allocated memory was 186.6MB in the beginning and 235.9MB in the end (delta: 49.3MB). Free memory was 130.2MB in the beginning and 206.7MB in the end (delta: -76.5MB). Peak memory consumption was 8.5MB. Max. memory is 8.0GB. [2022-01-30 20:15:59,594 INFO L158 Benchmark]: Boogie Preprocessor took 33.80ms. Allocated memory is still 235.9MB. Free memory was 206.7MB in the beginning and 205.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-30 20:15:59,595 INFO L158 Benchmark]: RCFGBuilder took 450.72ms. Allocated memory is still 235.9MB. Free memory was 204.7MB in the beginning and 190.5MB in the end (delta: 14.2MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-01-30 20:15:59,595 INFO L158 Benchmark]: TraceAbstraction took 5061.35ms. Allocated memory is still 235.9MB. Free memory was 190.0MB in the beginning and 95.2MB in the end (delta: 94.8MB). Peak memory consumption was 95.3MB. Max. memory is 8.0GB. [2022-01-30 20:15:59,596 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 186.6MB. Free memory is still 146.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 305.42ms. Allocated memory was 186.6MB in the beginning and 235.9MB in the end (delta: 49.3MB). Free memory was 130.2MB in the beginning and 206.7MB in the end (delta: -76.5MB). Peak memory consumption was 8.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 33.80ms. Allocated memory is still 235.9MB. Free memory was 206.7MB in the beginning and 205.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 450.72ms. Allocated memory is still 235.9MB. Free memory was 204.7MB in the beginning and 190.5MB in the end (delta: 14.2MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 5061.35ms. Allocated memory is still 235.9MB. Free memory was 190.0MB in the beginning and 95.2MB in the end (delta: 94.8MB). Peak memory consumption was 95.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 64 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.0s, OverallIterations: 7, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1825 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1798 mSDsluCounter, 402 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 65 mSDsCounter, 941 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1980 IncrementalHoareTripleChecker+Invalid, 2921 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 941 mSolverCounterUnsat, 337 mSDtfsCounter, 1980 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 238 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 606 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=101occurred in iteration=6, InterpolantAutomatonStates: 75, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 622 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 22 LocationsWithAnnotation, 70 PreInvPairs, 92 NumberOfFragments, 74 HoareAnnotationTreeSize, 70 FomulaSimplifications, 21 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 22 FomulaSimplificationsInter, 324 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 309 NumberOfCodeBlocks, 309 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 357 ConstructedInterpolants, 0 QuantifiedInterpolants, 589 SizeOfPredicates, 0 NumberOfNonLiveVariables, 289 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 258/294 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 61]: Loop Invariant Derived loop invariant: x == 0 && n == 0 - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: n == 0 - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: x == 0 && n == 0 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 0 <= i && size == \old(size) - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: x == 0 && n == 0 - InvariantResult [Line: 62]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 51]: Loop Invariant Derived loop invariant: x == 0 && n == 0 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 55]: Loop Invariant Derived loop invariant: x == 0 && n == 0 - InvariantResult [Line: 56]: Loop Invariant Derived loop invariant: 0 RESULT: Ultimate proved your program to be correct! [2022-01-30 20:15:59,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...