/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/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/combinations/pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 08:11:39,807 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 08:11:39,809 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 08:11:39,854 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 08:11:39,855 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 08:11:39,855 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 08:11:39,856 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 08:11:39,857 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 08:11:39,858 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 08:11:39,859 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 08:11:39,859 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 08:11:39,860 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 08:11:39,860 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 08:11:39,861 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 08:11:39,861 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 08:11:39,862 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 08:11:39,863 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 08:11:39,863 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 08:11:39,864 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 08:11:39,865 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 08:11:39,866 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 08:11:39,867 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 08:11:39,867 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 08:11:39,868 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 08:11:39,870 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 08:11:39,874 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 08:11:39,874 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 08:11:39,875 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 08:11:39,877 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-01-10 08:11:39,891 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 08:11:39,891 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 08:11:39,891 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 08:11:39,891 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 08:11:39,891 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 08:11:39,892 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 08:11:39,892 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 08:11:39,892 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 08:11:39,892 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 08:11:39,892 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 08:11:39,892 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 08:11:39,892 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 08:11:39,892 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 08:11:39,893 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 08:11:39,893 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 08:11:39,893 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 08:11:39,893 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 08:11:39,893 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 08:11:39,893 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 08:11:39,893 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 08:11:39,893 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 08:11:39,893 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 08:11:39,893 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 08:11:39,893 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 08:11:39,893 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 08:11:39,894 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 08:11:39,894 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 08:11:39,894 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 08:11:39,894 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 08:11:39,894 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 08:11:39,894 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 08:11:39,894 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 08:11:39,894 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 08:11:39,894 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 08:11:40,068 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 08:11:40,092 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 08:11:40,094 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 08:11:40,095 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 08:11:40,096 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 08:11:40,096 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label04.c [2022-01-10 08:11:40,144 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e80980323/b28f46f19b134a69ab20bacd1e392c41/FLAG71ce1d62c [2022-01-10 08:11:40,737 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 08:11:40,737 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label04.c [2022-01-10 08:11:40,761 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e80980323/b28f46f19b134a69ab20bacd1e392c41/FLAG71ce1d62c [2022-01-10 08:11:40,933 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e80980323/b28f46f19b134a69ab20bacd1e392c41 [2022-01-10 08:11:40,935 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 08:11:40,936 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 08:11:40,939 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 08:11:40,940 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 08:11:40,944 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 08:11:40,946 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:11:40" (1/1) ... [2022-01-10 08:11:40,947 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69ea462d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:11:40, skipping insertion in model container [2022-01-10 08:11:40,947 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:11:40" (1/1) ... [2022-01-10 08:11:40,951 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 08:11:41,037 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 08:11:41,327 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label04.c[20463,20476] [2022-01-10 08:11:41,360 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label04.c[27524,27537] [2022-01-10 08:11:41,855 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 08:11:41,866 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 08:11:41,903 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label04.c[20463,20476] [2022-01-10 08:11:41,911 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label04.c[27524,27537] [2022-01-10 08:11:42,176 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 08:11:42,198 INFO L208 MainTranslator]: Completed translation [2022-01-10 08:11:42,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:11:42 WrapperNode [2022-01-10 08:11:42,198 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 08:11:42,199 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 08:11:42,199 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 08:11:42,199 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 08:11:42,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:11:42" (1/1) ... [2022-01-10 08:11:42,255 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:11:42" (1/1) ... [2022-01-10 08:11:42,477 INFO L137 Inliner]: procedures = 39, calls = 24, calls flagged for inlining = 19, calls inlined = 19, statements flattened = 5180 [2022-01-10 08:11:42,477 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 08:11:42,478 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 08:11:42,478 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 08:11:42,478 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 08:11:42,484 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:11:42" (1/1) ... [2022-01-10 08:11:42,484 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:11:42" (1/1) ... [2022-01-10 08:11:42,521 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:11:42" (1/1) ... [2022-01-10 08:11:42,521 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:11:42" (1/1) ... [2022-01-10 08:11:42,644 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:11:42" (1/1) ... [2022-01-10 08:11:42,684 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:11:42" (1/1) ... [2022-01-10 08:11:42,699 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:11:42" (1/1) ... [2022-01-10 08:11:42,721 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 08:11:42,722 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 08:11:42,723 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 08:11:42,723 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 08:11:42,724 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:11:42" (1/1) ... [2022-01-10 08:11:42,730 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 08:11:42,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 08:11:42,747 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) [2022-01-10 08:11:42,787 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 [2022-01-10 08:11:42,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 08:11:42,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 08:11:42,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 08:11:42,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 08:11:42,892 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 08:11:42,893 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 08:12:05,378 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 08:12:05,388 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 08:12:05,389 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-10 08:12:05,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:12:05 BoogieIcfgContainer [2022-01-10 08:12:05,391 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 08:12:05,392 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 08:12:05,392 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 08:12:05,394 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 08:12:05,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 08:11:40" (1/3) ... [2022-01-10 08:12:05,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b66d008 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:12:05, skipping insertion in model container [2022-01-10 08:12:05,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:11:42" (2/3) ... [2022-01-10 08:12:05,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b66d008 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:12:05, skipping insertion in model container [2022-01-10 08:12:05,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:12:05" (3/3) ... [2022-01-10 08:12:05,396 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label04.c [2022-01-10 08:12:05,400 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 08:12:05,400 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 08:12:05,433 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 08:12:05,437 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 [2022-01-10 08:12:05,438 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 08:12:05,460 INFO L276 IsEmpty]: Start isEmpty. Operand has 944 states, 941 states have (on average 1.8979808714133901) internal successors, (1786), 943 states have internal predecessors, (1786), 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) [2022-01-10 08:12:05,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-10 08:12:05,469 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:12:05,469 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:12:05,470 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:12:05,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:12:05,477 INFO L85 PathProgramCache]: Analyzing trace with hash 720070723, now seen corresponding path program 1 times [2022-01-10 08:12:05,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:12:05,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1034565151] [2022-01-10 08:12:05,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:12:05,488 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:12:05,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:12:05,490 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:12:05,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-01-10 08:12:05,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:12:05,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 1 conjunts are in the unsatisfiable core [2022-01-10 08:12:05,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:12:05,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:12:05,682 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:12:05,683 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:12:05,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1034565151] [2022-01-10 08:12:05,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1034565151] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:12:05,683 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:12:05,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 08:12:05,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265180476] [2022-01-10 08:12:05,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:12:05,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 08:12:05,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:12:05,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 08:12:05,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 08:12:05,708 INFO L87 Difference]: Start difference. First operand has 944 states, 941 states have (on average 1.8979808714133901) internal successors, (1786), 943 states have internal predecessors, (1786), 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) Second operand has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 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) [2022-01-10 08:12:05,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:12:05,777 INFO L93 Difference]: Finished difference Result 1832 states and 3464 transitions. [2022-01-10 08:12:05,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 08:12:05,779 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 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) Word has length 42 [2022-01-10 08:12:05,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:12:05,798 INFO L225 Difference]: With dead ends: 1832 [2022-01-10 08:12:05,798 INFO L226 Difference]: Without dead ends: 878 [2022-01-10 08:12:05,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 08:12:05,806 INFO L933 BasicCegarLoop]: 1720 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1720 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:12:05,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1720 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:12:05,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2022-01-10 08:12:05,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 878. [2022-01-10 08:12:05,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 876 states have (on average 1.8869863013698631) internal successors, (1653), 877 states have internal predecessors, (1653), 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) [2022-01-10 08:12:05,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1653 transitions. [2022-01-10 08:12:05,893 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1653 transitions. Word has length 42 [2022-01-10 08:12:05,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:12:05,894 INFO L470 AbstractCegarLoop]: Abstraction has 878 states and 1653 transitions. [2022-01-10 08:12:05,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 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) [2022-01-10 08:12:05,894 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1653 transitions. [2022-01-10 08:12:05,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-10 08:12:05,895 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:12:05,895 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:12:05,902 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-01-10 08:12:06,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:12:06,102 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:12:06,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:12:06,103 INFO L85 PathProgramCache]: Analyzing trace with hash 325703937, now seen corresponding path program 1 times [2022-01-10 08:12:06,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:12:06,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1267577765] [2022-01-10 08:12:06,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:12:06,104 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:12:06,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:12:06,110 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:12:06,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-01-10 08:12:06,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:12:06,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 08:12:06,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:12:06,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:12:06,390 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:12:06,390 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:12:06,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1267577765] [2022-01-10 08:12:06,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1267577765] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:12:06,394 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:12:06,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:12:06,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992134252] [2022-01-10 08:12:06,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:12:06,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:12:06,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:12:06,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:12:06,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:12:06,404 INFO L87 Difference]: Start difference. First operand 878 states and 1653 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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) [2022-01-10 08:12:06,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:12:06,564 INFO L93 Difference]: Finished difference Result 950 states and 1765 transitions. [2022-01-10 08:12:06,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:12:06,565 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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) Word has length 42 [2022-01-10 08:12:06,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:12:06,569 INFO L225 Difference]: With dead ends: 950 [2022-01-10 08:12:06,569 INFO L226 Difference]: Without dead ends: 878 [2022-01-10 08:12:06,569 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:12:06,570 INFO L933 BasicCegarLoop]: 1651 mSDtfsCounter, 3 mSDsluCounter, 4900 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6551 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 08:12:06,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 6551 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 08:12:06,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2022-01-10 08:12:06,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 878. [2022-01-10 08:12:06,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 876 states have (on average 1.8299086757990868) internal successors, (1603), 877 states have internal predecessors, (1603), 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) [2022-01-10 08:12:06,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1603 transitions. [2022-01-10 08:12:06,599 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1603 transitions. Word has length 42 [2022-01-10 08:12:06,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:12:06,601 INFO L470 AbstractCegarLoop]: Abstraction has 878 states and 1603 transitions. [2022-01-10 08:12:06,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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) [2022-01-10 08:12:06,606 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1603 transitions. [2022-01-10 08:12:06,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-10 08:12:06,611 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:12:06,611 INFO L514 BasicCegarLoop]: trace histogram [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, 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] [2022-01-10 08:12:06,617 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-01-10 08:12:06,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:12:06,817 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:12:06,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:12:06,818 INFO L85 PathProgramCache]: Analyzing trace with hash 525423513, now seen corresponding path program 1 times [2022-01-10 08:12:06,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:12:06,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [729661504] [2022-01-10 08:12:06,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:12:06,819 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:12:06,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:12:06,820 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:12:06,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-01-10 08:12:06,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:12:06,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:12:06,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:12:07,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:12:07,096 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:12:07,096 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:12:07,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [729661504] [2022-01-10 08:12:07,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [729661504] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:12:07,096 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:12:07,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 08:12:07,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497510620] [2022-01-10 08:12:07,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:12:07,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:12:07,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:12:07,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:12:07,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:12:07,098 INFO L87 Difference]: Start difference. First operand 878 states and 1603 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 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) [2022-01-10 08:12:36,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:12:36,870 INFO L93 Difference]: Finished difference Result 2382 states and 4476 transitions. [2022-01-10 08:12:36,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:12:36,871 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 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) Word has length 61 [2022-01-10 08:12:36,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:12:36,876 INFO L225 Difference]: With dead ends: 2382 [2022-01-10 08:12:36,876 INFO L226 Difference]: Without dead ends: 1629 [2022-01-10 08:12:36,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:12:36,880 INFO L933 BasicCegarLoop]: 381 mSDtfsCounter, 882 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2464 mSolverCounterSat, 512 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 2976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 512 IncrementalHoareTripleChecker+Valid, 2464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.6s IncrementalHoareTripleChecker+Time [2022-01-10 08:12:36,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [882 Valid, 388 Invalid, 2976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [512 Valid, 2464 Invalid, 0 Unknown, 0 Unchecked, 29.6s Time] [2022-01-10 08:12:36,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1629 states. [2022-01-10 08:12:36,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1629 to 1629. [2022-01-10 08:12:36,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1629 states, 1627 states have (on average 1.7418561770129073) internal successors, (2834), 1628 states have internal predecessors, (2834), 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) [2022-01-10 08:12:36,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1629 states to 1629 states and 2834 transitions. [2022-01-10 08:12:36,946 INFO L78 Accepts]: Start accepts. Automaton has 1629 states and 2834 transitions. Word has length 61 [2022-01-10 08:12:36,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:12:36,960 INFO L470 AbstractCegarLoop]: Abstraction has 1629 states and 2834 transitions. [2022-01-10 08:12:36,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 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) [2022-01-10 08:12:36,960 INFO L276 IsEmpty]: Start isEmpty. Operand 1629 states and 2834 transitions. [2022-01-10 08:12:36,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 08:12:36,962 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:12:36,962 INFO L514 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:12:36,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-01-10 08:12:37,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:12:37,169 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:12:37,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:12:37,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1207745120, now seen corresponding path program 1 times [2022-01-10 08:12:37,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:12:37,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [12678066] [2022-01-10 08:12:37,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:12:37,170 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:12:37,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:12:37,172 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:12:37,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-01-10 08:12:37,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:12:37,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:12:37,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:12:37,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:12:37,433 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:12:37,433 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:12:37,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [12678066] [2022-01-10 08:12:37,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [12678066] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:12:37,433 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:12:37,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:12:37,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089319946] [2022-01-10 08:12:37,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:12:37,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:12:37,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:12:37,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:12:37,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:12:37,435 INFO L87 Difference]: Start difference. First operand 1629 states and 2834 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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) [2022-01-10 08:12:37,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:12:37,457 INFO L93 Difference]: Finished difference Result 1759 states and 3040 transitions. [2022-01-10 08:12:37,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:12:37,458 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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) Word has length 91 [2022-01-10 08:12:37,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:12:37,462 INFO L225 Difference]: With dead ends: 1759 [2022-01-10 08:12:37,462 INFO L226 Difference]: Without dead ends: 1691 [2022-01-10 08:12:37,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:12:37,468 INFO L933 BasicCegarLoop]: 1697 mSDtfsCounter, 1537 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1537 SdHoareTripleChecker+Valid, 1803 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:12:37,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1537 Valid, 1803 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:12:37,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1691 states. [2022-01-10 08:12:37,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1691 to 1689. [2022-01-10 08:12:37,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1689 states, 1687 states have (on average 1.7368109069353883) internal successors, (2930), 1688 states have internal predecessors, (2930), 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) [2022-01-10 08:12:37,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1689 states to 1689 states and 2930 transitions. [2022-01-10 08:12:37,495 INFO L78 Accepts]: Start accepts. Automaton has 1689 states and 2930 transitions. Word has length 91 [2022-01-10 08:12:37,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:12:37,496 INFO L470 AbstractCegarLoop]: Abstraction has 1689 states and 2930 transitions. [2022-01-10 08:12:37,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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) [2022-01-10 08:12:37,496 INFO L276 IsEmpty]: Start isEmpty. Operand 1689 states and 2930 transitions. [2022-01-10 08:12:37,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 08:12:37,497 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:12:37,498 INFO L514 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:12:37,504 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-01-10 08:12:37,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:12:37,705 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:12:37,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:12:37,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1564953708, now seen corresponding path program 1 times [2022-01-10 08:12:37,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:12:37,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1427986794] [2022-01-10 08:12:37,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:12:37,706 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:12:37,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:12:37,709 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:12:37,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-01-10 08:12:37,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:12:37,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 08:12:37,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:12:38,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:12:38,540 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:12:38,541 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:12:38,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1427986794] [2022-01-10 08:12:38,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1427986794] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:12:38,547 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:12:38,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:12:38,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944330974] [2022-01-10 08:12:38,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:12:38,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 08:12:38,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:12:38,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 08:12:38,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:12:38,549 INFO L87 Difference]: Start difference. First operand 1689 states and 2930 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-01-10 08:12:38,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:12:38,647 INFO L93 Difference]: Finished difference Result 1820 states and 3138 transitions. [2022-01-10 08:12:38,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 08:12:38,647 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 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) Word has length 91 [2022-01-10 08:12:38,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:12:38,652 INFO L225 Difference]: With dead ends: 1820 [2022-01-10 08:12:38,652 INFO L226 Difference]: Without dead ends: 1692 [2022-01-10 08:12:38,654 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:12:38,654 INFO L933 BasicCegarLoop]: 1598 mSDtfsCounter, 2956 mSDsluCounter, 3017 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2956 SdHoareTripleChecker+Valid, 4615 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 08:12:38,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2956 Valid, 4615 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 14 Unchecked, 0.1s Time] [2022-01-10 08:12:38,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1692 states. [2022-01-10 08:12:38,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1692 to 1692. [2022-01-10 08:12:38,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1692 states, 1690 states have (on average 1.7355029585798816) internal successors, (2933), 1691 states have internal predecessors, (2933), 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) [2022-01-10 08:12:38,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1692 states to 1692 states and 2933 transitions. [2022-01-10 08:12:38,681 INFO L78 Accepts]: Start accepts. Automaton has 1692 states and 2933 transitions. Word has length 91 [2022-01-10 08:12:38,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:12:38,683 INFO L470 AbstractCegarLoop]: Abstraction has 1692 states and 2933 transitions. [2022-01-10 08:12:38,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-01-10 08:12:38,683 INFO L276 IsEmpty]: Start isEmpty. Operand 1692 states and 2933 transitions. [2022-01-10 08:12:38,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 08:12:38,683 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:12:38,683 INFO L514 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:12:38,696 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-01-10 08:12:38,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:12:38,884 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:12:38,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:12:38,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1839713322, now seen corresponding path program 1 times [2022-01-10 08:12:38,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:12:38,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2094541038] [2022-01-10 08:12:38,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:12:38,887 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:12:38,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:12:38,888 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:12:38,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-01-10 08:12:38,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:12:38,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:12:38,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:12:39,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:12:39,152 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:12:39,152 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:12:39,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2094541038] [2022-01-10 08:12:39,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2094541038] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:12:39,153 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:12:39,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:12:39,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869040066] [2022-01-10 08:12:39,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:12:39,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:12:39,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:12:39,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:12:39,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:12:39,154 INFO L87 Difference]: Start difference. First operand 1692 states and 2933 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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) [2022-01-10 08:12:39,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:12:39,176 INFO L93 Difference]: Finished difference Result 1936 states and 3321 transitions. [2022-01-10 08:12:39,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:12:39,177 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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) Word has length 91 [2022-01-10 08:12:39,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:12:39,181 INFO L225 Difference]: With dead ends: 1936 [2022-01-10 08:12:39,181 INFO L226 Difference]: Without dead ends: 1808 [2022-01-10 08:12:39,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:12:39,182 INFO L933 BasicCegarLoop]: 1693 mSDtfsCounter, 1533 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1533 SdHoareTripleChecker+Valid, 1803 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:12:39,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1533 Valid, 1803 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:12:39,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1808 states. [2022-01-10 08:12:39,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1808 to 1806. [2022-01-10 08:12:39,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1806 states, 1804 states have (on average 1.7261640798226163) internal successors, (3114), 1805 states have internal predecessors, (3114), 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) [2022-01-10 08:12:39,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1806 states to 1806 states and 3114 transitions. [2022-01-10 08:12:39,205 INFO L78 Accepts]: Start accepts. Automaton has 1806 states and 3114 transitions. Word has length 91 [2022-01-10 08:12:39,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:12:39,205 INFO L470 AbstractCegarLoop]: Abstraction has 1806 states and 3114 transitions. [2022-01-10 08:12:39,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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) [2022-01-10 08:12:39,205 INFO L276 IsEmpty]: Start isEmpty. Operand 1806 states and 3114 transitions. [2022-01-10 08:12:39,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 08:12:39,206 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:12:39,206 INFO L514 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:12:39,212 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-01-10 08:12:39,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:12:39,412 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:12:39,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:12:39,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1204348682, now seen corresponding path program 1 times [2022-01-10 08:12:39,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:12:39,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [947234226] [2022-01-10 08:12:39,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:12:39,413 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:12:39,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:12:39,428 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:12:39,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-01-10 08:12:39,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:12:39,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 08:12:39,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:12:40,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:12:40,000 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:12:40,000 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:12:40,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [947234226] [2022-01-10 08:12:40,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [947234226] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:12:40,001 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:12:40,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:12:40,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428162241] [2022-01-10 08:12:40,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:12:40,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 08:12:40,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:12:40,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 08:12:40,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:12:40,002 INFO L87 Difference]: Start difference. First operand 1806 states and 3114 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-01-10 08:12:40,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:12:40,077 INFO L93 Difference]: Finished difference Result 2052 states and 3504 transitions. [2022-01-10 08:12:40,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 08:12:40,077 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 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) Word has length 91 [2022-01-10 08:12:40,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:12:40,082 INFO L225 Difference]: With dead ends: 2052 [2022-01-10 08:12:40,082 INFO L226 Difference]: Without dead ends: 1810 [2022-01-10 08:12:40,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:12:40,083 INFO L933 BasicCegarLoop]: 1596 mSDtfsCounter, 2952 mSDsluCounter, 3090 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2952 SdHoareTripleChecker+Valid, 4686 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:12:40,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2952 Valid, 4686 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 57 Unchecked, 0.0s Time] [2022-01-10 08:12:40,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1810 states. [2022-01-10 08:12:40,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1810 to 1810. [2022-01-10 08:12:40,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1810 states, 1808 states have (on average 1.7245575221238938) internal successors, (3118), 1809 states have internal predecessors, (3118), 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) [2022-01-10 08:12:40,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1810 states to 1810 states and 3118 transitions. [2022-01-10 08:12:40,110 INFO L78 Accepts]: Start accepts. Automaton has 1810 states and 3118 transitions. Word has length 91 [2022-01-10 08:12:40,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:12:40,110 INFO L470 AbstractCegarLoop]: Abstraction has 1810 states and 3118 transitions. [2022-01-10 08:12:40,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-01-10 08:12:40,110 INFO L276 IsEmpty]: Start isEmpty. Operand 1810 states and 3118 transitions. [2022-01-10 08:12:40,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 08:12:40,110 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:12:40,111 INFO L514 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:12:40,133 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-01-10 08:12:40,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:12:40,334 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:12:40,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:12:40,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1713821772, now seen corresponding path program 1 times [2022-01-10 08:12:40,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:12:40,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1149568878] [2022-01-10 08:12:40,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:12:40,335 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:12:40,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:12:40,336 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:12:40,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-01-10 08:12:40,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:12:40,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:12:40,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:12:40,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:12:40,591 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:12:40,591 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:12:40,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1149568878] [2022-01-10 08:12:40,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1149568878] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:12:40,591 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:12:40,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:12:40,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405629365] [2022-01-10 08:12:40,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:12:40,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:12:40,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:12:40,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:12:40,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:12:40,592 INFO L87 Difference]: Start difference. First operand 1810 states and 3118 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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) [2022-01-10 08:12:40,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:12:40,618 INFO L93 Difference]: Finished difference Result 2270 states and 3848 transitions. [2022-01-10 08:12:40,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:12:40,619 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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) Word has length 91 [2022-01-10 08:12:40,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:12:40,624 INFO L225 Difference]: With dead ends: 2270 [2022-01-10 08:12:40,625 INFO L226 Difference]: Without dead ends: 2028 [2022-01-10 08:12:40,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:12:40,626 INFO L933 BasicCegarLoop]: 1689 mSDtfsCounter, 1529 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1529 SdHoareTripleChecker+Valid, 1803 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:12:40,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1529 Valid, 1803 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:12:40,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2028 states. [2022-01-10 08:12:40,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2028 to 2026. [2022-01-10 08:12:40,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2026 states, 2024 states have (on average 1.708498023715415) internal successors, (3458), 2025 states have internal predecessors, (3458), 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) [2022-01-10 08:12:40,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2026 states to 2026 states and 3458 transitions. [2022-01-10 08:12:40,657 INFO L78 Accepts]: Start accepts. Automaton has 2026 states and 3458 transitions. Word has length 91 [2022-01-10 08:12:40,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:12:40,657 INFO L470 AbstractCegarLoop]: Abstraction has 2026 states and 3458 transitions. [2022-01-10 08:12:40,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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) [2022-01-10 08:12:40,657 INFO L276 IsEmpty]: Start isEmpty. Operand 2026 states and 3458 transitions. [2022-01-10 08:12:40,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 08:12:40,658 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:12:40,658 INFO L514 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:12:40,670 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-01-10 08:12:40,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:12:40,865 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:12:40,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:12:40,865 INFO L85 PathProgramCache]: Analyzing trace with hash 968239042, now seen corresponding path program 1 times [2022-01-10 08:12:40,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:12:40,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [320447457] [2022-01-10 08:12:40,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:12:40,866 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:12:40,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:12:40,867 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:12:40,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-01-10 08:12:40,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:12:40,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:12:40,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:12:41,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:12:41,117 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:12:41,117 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:12:41,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [320447457] [2022-01-10 08:12:41,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [320447457] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:12:41,118 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:12:41,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:12:41,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950199553] [2022-01-10 08:12:41,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:12:41,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:12:41,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:12:41,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:12:41,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:12:41,119 INFO L87 Difference]: Start difference. First operand 2026 states and 3458 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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) [2022-01-10 08:12:41,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:12:41,207 INFO L93 Difference]: Finished difference Result 2894 states and 4828 transitions. [2022-01-10 08:12:41,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:12:41,208 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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) Word has length 91 [2022-01-10 08:12:41,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:12:41,214 INFO L225 Difference]: With dead ends: 2894 [2022-01-10 08:12:41,214 INFO L226 Difference]: Without dead ends: 2436 [2022-01-10 08:12:41,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:12:41,215 INFO L933 BasicCegarLoop]: 1684 mSDtfsCounter, 1525 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1525 SdHoareTripleChecker+Valid, 1802 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:12:41,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1525 Valid, 1802 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:12:41,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2436 states. [2022-01-10 08:12:41,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2436 to 2434. [2022-01-10 08:12:41,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2434 states, 2432 states have (on average 1.683388157894737) internal successors, (4094), 2433 states have internal predecessors, (4094), 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) [2022-01-10 08:12:41,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2434 states to 2434 states and 4094 transitions. [2022-01-10 08:12:41,249 INFO L78 Accepts]: Start accepts. Automaton has 2434 states and 4094 transitions. Word has length 91 [2022-01-10 08:12:41,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:12:41,250 INFO L470 AbstractCegarLoop]: Abstraction has 2434 states and 4094 transitions. [2022-01-10 08:12:41,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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) [2022-01-10 08:12:41,250 INFO L276 IsEmpty]: Start isEmpty. Operand 2434 states and 4094 transitions. [2022-01-10 08:12:41,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 08:12:41,250 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:12:41,250 INFO L514 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:12:41,273 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-01-10 08:12:41,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:12:41,457 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:12:41,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:12:41,458 INFO L85 PathProgramCache]: Analyzing trace with hash -971791816, now seen corresponding path program 1 times [2022-01-10 08:12:41,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:12:41,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1330913882] [2022-01-10 08:12:41,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:12:41,458 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:12:41,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:12:41,472 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:12:41,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-01-10 08:12:41,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:12:41,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:12:41,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:12:41,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:12:41,731 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:12:41,731 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:12:41,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1330913882] [2022-01-10 08:12:41,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1330913882] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:12:41,731 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:12:41,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:12:41,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750250786] [2022-01-10 08:12:41,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:12:41,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:12:41,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:12:41,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:12:41,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:12:41,732 INFO L87 Difference]: Start difference. First operand 2434 states and 4094 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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) [2022-01-10 08:12:41,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:12:41,775 INFO L93 Difference]: Finished difference Result 4070 states and 6656 transitions. [2022-01-10 08:12:41,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:12:41,776 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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) Word has length 91 [2022-01-10 08:12:41,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:12:41,785 INFO L225 Difference]: With dead ends: 4070 [2022-01-10 08:12:41,785 INFO L226 Difference]: Without dead ends: 3204 [2022-01-10 08:12:41,787 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:12:41,787 INFO L933 BasicCegarLoop]: 1679 mSDtfsCounter, 1521 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1521 SdHoareTripleChecker+Valid, 1801 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:12:41,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1521 Valid, 1801 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:12:41,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3204 states. [2022-01-10 08:12:41,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3204 to 3202. [2022-01-10 08:12:41,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3202 states, 3200 states have (on average 1.649375) internal successors, (5278), 3201 states have internal predecessors, (5278), 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) [2022-01-10 08:12:41,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3202 states to 3202 states and 5278 transitions. [2022-01-10 08:12:41,847 INFO L78 Accepts]: Start accepts. Automaton has 3202 states and 5278 transitions. Word has length 91 [2022-01-10 08:12:41,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:12:41,847 INFO L470 AbstractCegarLoop]: Abstraction has 3202 states and 5278 transitions. [2022-01-10 08:12:41,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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) [2022-01-10 08:12:41,847 INFO L276 IsEmpty]: Start isEmpty. Operand 3202 states and 5278 transitions. [2022-01-10 08:12:41,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 08:12:41,849 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:12:41,849 INFO L514 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:12:41,871 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-01-10 08:12:42,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:12:42,056 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:12:42,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:12:42,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1728890798, now seen corresponding path program 1 times [2022-01-10 08:12:42,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:12:42,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [210271476] [2022-01-10 08:12:42,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:12:42,057 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:12:42,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:12:42,072 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:12:42,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-01-10 08:12:42,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:12:42,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 08:12:42,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:12:44,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:12:44,171 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:12:44,171 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:12:44,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [210271476] [2022-01-10 08:12:44,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [210271476] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:12:44,172 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:12:44,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 08:12:44,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204390060] [2022-01-10 08:12:44,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:12:44,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 08:12:44,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:12:44,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 08:12:44,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-01-10 08:12:44,173 INFO L87 Difference]: Start difference. First operand 3202 states and 5278 transitions. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 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) [2022-01-10 08:12:44,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:12:44,594 INFO L93 Difference]: Finished difference Result 16274 states and 25638 transitions. [2022-01-10 08:12:44,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 08:12:44,596 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 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) Word has length 91 [2022-01-10 08:12:44,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:12:44,641 INFO L225 Difference]: With dead ends: 16274 [2022-01-10 08:12:44,641 INFO L226 Difference]: Without dead ends: 14640 [2022-01-10 08:12:44,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-01-10 08:12:44,650 INFO L933 BasicCegarLoop]: 1597 mSDtfsCounter, 2773 mSDsluCounter, 782 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2773 SdHoareTripleChecker+Valid, 2379 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 08:12:44,651 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2773 Valid, 2379 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 08:12:44,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14640 states. [2022-01-10 08:12:44,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14640 to 6466. [2022-01-10 08:12:44,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6466 states, 6464 states have (on average 1.588799504950495) internal successors, (10270), 6465 states have internal predecessors, (10270), 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) [2022-01-10 08:12:44,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6466 states to 6466 states and 10270 transitions. [2022-01-10 08:12:44,953 INFO L78 Accepts]: Start accepts. Automaton has 6466 states and 10270 transitions. Word has length 91 [2022-01-10 08:12:44,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:12:44,953 INFO L470 AbstractCegarLoop]: Abstraction has 6466 states and 10270 transitions. [2022-01-10 08:12:44,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 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) [2022-01-10 08:12:44,954 INFO L276 IsEmpty]: Start isEmpty. Operand 6466 states and 10270 transitions. [2022-01-10 08:12:44,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-01-10 08:12:44,954 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:12:44,954 INFO L514 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:12:44,977 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-01-10 08:12:45,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:12:45,162 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:12:45,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:12:45,162 INFO L85 PathProgramCache]: Analyzing trace with hash -2103976578, now seen corresponding path program 1 times [2022-01-10 08:12:45,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:12:45,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1987304550] [2022-01-10 08:12:45,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:12:45,163 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:12:45,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:12:45,168 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:12:45,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-01-10 08:12:45,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:12:45,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:12:45,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:12:45,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:12:45,451 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:12:45,451 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:12:45,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1987304550] [2022-01-10 08:12:45,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1987304550] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:12:45,451 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:12:45,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:12:45,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700869309] [2022-01-10 08:12:45,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:12:45,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:12:45,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:12:45,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:12:45,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:12:45,452 INFO L87 Difference]: Start difference. First operand 6466 states and 10270 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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) [2022-01-10 08:12:45,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:12:45,574 INFO L93 Difference]: Finished difference Result 13702 states and 21392 transitions. [2022-01-10 08:12:45,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:12:45,575 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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) Word has length 93 [2022-01-10 08:12:45,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:12:45,589 INFO L225 Difference]: With dead ends: 13702 [2022-01-10 08:12:45,590 INFO L226 Difference]: Without dead ends: 8804 [2022-01-10 08:12:45,597 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:12:45,598 INFO L933 BasicCegarLoop]: 1633 mSDtfsCounter, 1505 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1505 SdHoareTripleChecker+Valid, 1736 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:12:45,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1505 Valid, 1736 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:12:45,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8804 states. [2022-01-10 08:12:45,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8804 to 8802. [2022-01-10 08:12:45,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8802 states, 8800 states have (on average 1.5652272727272727) internal successors, (13774), 8801 states have internal predecessors, (13774), 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) [2022-01-10 08:12:45,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8802 states to 8802 states and 13774 transitions. [2022-01-10 08:12:45,767 INFO L78 Accepts]: Start accepts. Automaton has 8802 states and 13774 transitions. Word has length 93 [2022-01-10 08:12:45,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:12:45,767 INFO L470 AbstractCegarLoop]: Abstraction has 8802 states and 13774 transitions. [2022-01-10 08:12:45,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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) [2022-01-10 08:12:45,767 INFO L276 IsEmpty]: Start isEmpty. Operand 8802 states and 13774 transitions. [2022-01-10 08:12:45,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-01-10 08:12:45,768 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:12:45,768 INFO L514 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:12:45,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-01-10 08:12:45,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:12:45,990 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:12:45,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:12:45,991 INFO L85 PathProgramCache]: Analyzing trace with hash -248568990, now seen corresponding path program 1 times [2022-01-10 08:12:45,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:12:45,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [913012196] [2022-01-10 08:12:45,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:12:45,991 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:12:45,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:12:45,992 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:12:45,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-01-10 08:12:46,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:12:46,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:12:46,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:12:46,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:12:46,204 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:12:46,205 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:12:46,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [913012196] [2022-01-10 08:12:46,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [913012196] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:12:46,205 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:12:46,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:12:46,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693888781] [2022-01-10 08:12:46,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:12:46,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:12:46,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:12:46,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:12:46,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:12:46,206 INFO L87 Difference]: Start difference. First operand 8802 states and 13774 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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) [2022-01-10 08:12:46,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:12:46,506 INFO L93 Difference]: Finished difference Result 22406 states and 34416 transitions. [2022-01-10 08:12:46,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:12:46,506 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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) Word has length 93 [2022-01-10 08:12:46,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:12:46,527 INFO L225 Difference]: With dead ends: 22406 [2022-01-10 08:12:46,528 INFO L226 Difference]: Without dead ends: 15172 [2022-01-10 08:12:46,535 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:12:46,536 INFO L933 BasicCegarLoop]: 1661 mSDtfsCounter, 1513 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1513 SdHoareTripleChecker+Valid, 1791 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:12:46,536 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1513 Valid, 1791 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:12:46,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15172 states. [2022-01-10 08:12:46,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15172 to 15170. [2022-01-10 08:12:46,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15170 states, 15168 states have (on average 1.5315137130801688) internal successors, (23230), 15169 states have internal predecessors, (23230), 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) [2022-01-10 08:12:46,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15170 states to 15170 states and 23230 transitions. [2022-01-10 08:12:46,850 INFO L78 Accepts]: Start accepts. Automaton has 15170 states and 23230 transitions. Word has length 93 [2022-01-10 08:12:46,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:12:46,850 INFO L470 AbstractCegarLoop]: Abstraction has 15170 states and 23230 transitions. [2022-01-10 08:12:46,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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) [2022-01-10 08:12:46,851 INFO L276 IsEmpty]: Start isEmpty. Operand 15170 states and 23230 transitions. [2022-01-10 08:12:46,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-01-10 08:12:46,851 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:12:46,851 INFO L514 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:12:46,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-01-10 08:12:47,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:12:47,058 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:12:47,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:12:47,059 INFO L85 PathProgramCache]: Analyzing trace with hash 998938626, now seen corresponding path program 1 times [2022-01-10 08:12:47,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:12:47,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1116381367] [2022-01-10 08:12:47,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:12:47,059 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:12:47,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:12:47,061 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:12:47,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-01-10 08:12:47,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:12:47,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:12:47,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:12:47,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:12:47,307 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:12:47,307 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:12:47,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1116381367] [2022-01-10 08:12:47,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1116381367] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:12:47,307 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:12:47,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:12:47,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268434341] [2022-01-10 08:12:47,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:12:47,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:12:47,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:12:47,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:12:47,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:12:47,308 INFO L87 Difference]: Start difference. First operand 15170 states and 23230 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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) [2022-01-10 08:12:47,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:12:47,812 INFO L93 Difference]: Finished difference Result 40646 states and 61344 transitions. [2022-01-10 08:12:47,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:12:47,813 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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) Word has length 93 [2022-01-10 08:12:47,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:12:47,855 INFO L225 Difference]: With dead ends: 40646 [2022-01-10 08:12:47,856 INFO L226 Difference]: Without dead ends: 27044 [2022-01-10 08:12:47,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:12:47,873 INFO L933 BasicCegarLoop]: 1674 mSDtfsCounter, 1517 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1517 SdHoareTripleChecker+Valid, 1800 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:12:47,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1517 Valid, 1800 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:12:47,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27044 states. [2022-01-10 08:12:48,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27044 to 27042. [2022-01-10 08:12:48,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27042 states, 27040 states have (on average 1.4999260355029587) internal successors, (40558), 27041 states have internal predecessors, (40558), 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) [2022-01-10 08:12:48,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27042 states to 27042 states and 40558 transitions. [2022-01-10 08:12:48,655 INFO L78 Accepts]: Start accepts. Automaton has 27042 states and 40558 transitions. Word has length 93 [2022-01-10 08:12:48,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:12:48,656 INFO L470 AbstractCegarLoop]: Abstraction has 27042 states and 40558 transitions. [2022-01-10 08:12:48,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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) [2022-01-10 08:12:48,656 INFO L276 IsEmpty]: Start isEmpty. Operand 27042 states and 40558 transitions. [2022-01-10 08:12:48,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-01-10 08:12:48,656 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:12:48,656 INFO L514 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:12:48,674 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-01-10 08:12:48,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:12:48,864 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:12:48,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:12:48,864 INFO L85 PathProgramCache]: Analyzing trace with hash 847811530, now seen corresponding path program 1 times [2022-01-10 08:12:48,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:12:48,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1366716953] [2022-01-10 08:12:48,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:12:48,865 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:12:48,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:12:48,883 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:12:48,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-01-10 08:12:48,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:12:48,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 08:12:48,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:12:49,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:12:49,089 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:12:49,090 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:12:49,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1366716953] [2022-01-10 08:12:49,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1366716953] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:12:49,090 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:12:49,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:12:49,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829454402] [2022-01-10 08:12:49,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:12:49,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:12:49,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:12:49,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:12:49,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:12:49,091 INFO L87 Difference]: Start difference. First operand 27042 states and 40558 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 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) [2022-01-10 08:12:50,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:12:50,079 INFO L93 Difference]: Finished difference Result 49309 states and 72813 transitions. [2022-01-10 08:12:50,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 08:12:50,081 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 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) Word has length 94 [2022-01-10 08:12:50,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:12:50,167 INFO L225 Difference]: With dead ends: 49309 [2022-01-10 08:12:50,167 INFO L226 Difference]: Without dead ends: 49307 [2022-01-10 08:12:50,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 08:12:50,183 INFO L933 BasicCegarLoop]: 1638 mSDtfsCounter, 295 mSDsluCounter, 4802 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 6440 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:12:50,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 6440 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:12:50,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49307 states. [2022-01-10 08:12:51,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49307 to 28386. [2022-01-10 08:12:51,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28386 states, 28384 states have (on average 1.473999436302142) internal successors, (41838), 28385 states have internal predecessors, (41838), 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) [2022-01-10 08:12:51,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28386 states to 28386 states and 41838 transitions. [2022-01-10 08:12:51,125 INFO L78 Accepts]: Start accepts. Automaton has 28386 states and 41838 transitions. Word has length 94 [2022-01-10 08:12:51,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:12:51,125 INFO L470 AbstractCegarLoop]: Abstraction has 28386 states and 41838 transitions. [2022-01-10 08:12:51,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 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) [2022-01-10 08:12:51,125 INFO L276 IsEmpty]: Start isEmpty. Operand 28386 states and 41838 transitions. [2022-01-10 08:12:51,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-10 08:12:51,132 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:12:51,132 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:12:51,153 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2022-01-10 08:12:51,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:12:51,339 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:12:51,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:12:51,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1928538940, now seen corresponding path program 1 times [2022-01-10 08:12:51,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:12:51,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1891206471] [2022-01-10 08:12:51,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:12:51,340 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:12:51,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:12:51,341 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:12:51,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-01-10 08:12:51,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:12:51,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:12:51,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:12:51,612 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:12:51,613 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:12:51,613 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:12:51,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1891206471] [2022-01-10 08:12:51,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1891206471] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:12:51,613 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:12:51,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 08:12:51,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337678229] [2022-01-10 08:12:51,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:12:51,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:12:51,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:12:51,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:12:51,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:12:51,614 INFO L87 Difference]: Start difference. First operand 28386 states and 41838 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 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)