/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/eca-rers2012/Problem16_label59.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 05:30:55,718 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 05:30:55,720 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 05:30:55,778 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 05:30:55,778 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 05:30:55,780 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 05:30:55,782 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 05:30:55,786 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 05:30:55,788 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 05:30:55,791 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 05:30:55,792 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 05:30:55,793 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 05:30:55,793 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 05:30:55,795 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 05:30:55,796 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 05:30:55,799 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 05:30:55,799 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 05:30:55,800 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 05:30:55,802 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 05:30:55,805 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 05:30:55,806 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 05:30:55,807 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 05:30:55,808 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 05:30:55,809 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 05:30:55,813 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 05:30:55,814 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 05:30:55,814 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 05:30:55,814 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 05:30:55,815 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 05:30:55,815 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 05:30:55,815 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 05:30:55,816 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 05:30:55,816 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 05:30:55,816 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 05:30:55,817 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 05:30:55,817 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 05:30:55,817 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 05:30:55,818 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 05:30:55,818 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 05:30:55,818 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 05:30:55,819 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 05:30:55,822 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 05:30:55,847 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 05:30:55,848 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 05:30:55,848 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 05:30:55,848 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 05:30:55,848 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 05:30:55,849 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 05:30:55,849 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 05:30:55,849 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 05:30:55,849 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 05:30:55,849 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 05:30:55,849 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 05:30:55,849 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 05:30:55,849 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 05:30:55,849 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 05:30:55,850 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 05:30:55,850 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 05:30:55,850 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 05:30:55,850 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 05:30:55,850 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 05:30:55,850 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 05:30:55,850 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 05:30:55,850 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 05:30:55,850 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 05:30:55,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 05:30:55,850 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 05:30:55,850 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 05:30:55,851 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 05:30:55,851 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 05:30:55,851 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 05:30:55,851 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 05:30:55,851 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 05:30:55,851 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 05:30:55,851 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 05:30:55,851 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 05:30:56,046 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 05:30:56,061 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 05:30:56,063 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 05:30:56,063 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 05:30:56,066 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 05:30:56,068 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label59.c [2022-01-10 05:30:56,120 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44cd0782d/9238ce18fa9149ef8a5e0f7b2f02d4c5/FLAG064c3386c [2022-01-10 05:30:56,591 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 05:30:56,592 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label59.c [2022-01-10 05:30:56,607 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44cd0782d/9238ce18fa9149ef8a5e0f7b2f02d4c5/FLAG064c3386c [2022-01-10 05:30:57,091 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44cd0782d/9238ce18fa9149ef8a5e0f7b2f02d4c5 [2022-01-10 05:30:57,101 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 05:30:57,102 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 05:30:57,104 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 05:30:57,104 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 05:30:57,106 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 05:30:57,106 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:30:57" (1/1) ... [2022-01-10 05:30:57,107 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b091b34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:30:57, skipping insertion in model container [2022-01-10 05:30:57,107 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:30:57" (1/1) ... [2022-01-10 05:30:57,114 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 05:30:57,164 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 05:30:57,300 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label59.c[4713,4726] [2022-01-10 05:30:57,575 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 05:30:57,582 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 05:30:57,604 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label59.c[4713,4726] [2022-01-10 05:30:57,759 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 05:30:57,771 INFO L208 MainTranslator]: Completed translation [2022-01-10 05:30:57,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:30:57 WrapperNode [2022-01-10 05:30:57,771 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 05:30:57,772 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 05:30:57,772 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 05:30:57,772 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 05:30:57,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:30:57" (1/1) ... [2022-01-10 05:30:57,805 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:30:57" (1/1) ... [2022-01-10 05:30:57,880 INFO L137 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1765 [2022-01-10 05:30:57,881 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 05:30:57,882 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 05:30:57,882 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 05:30:57,882 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 05:30:57,888 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:30:57" (1/1) ... [2022-01-10 05:30:57,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:30:57" (1/1) ... [2022-01-10 05:30:57,896 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:30:57" (1/1) ... [2022-01-10 05:30:57,896 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:30:57" (1/1) ... [2022-01-10 05:30:57,936 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:30:57" (1/1) ... [2022-01-10 05:30:57,954 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:30:57" (1/1) ... [2022-01-10 05:30:57,959 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:30:57" (1/1) ... [2022-01-10 05:30:57,966 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 05:30:57,968 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 05:30:57,968 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 05:30:57,968 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 05:30:57,969 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:30:57" (1/1) ... [2022-01-10 05:30:57,975 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 05:30:57,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 05:30:57,995 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 05:30:58,017 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 05:30:58,032 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 05:30:58,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 05:30:58,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 05:30:58,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 05:30:58,083 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 05:30:58,084 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 05:31:04,053 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 05:31:04,061 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 05:31:04,061 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 05:31:04,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:31:04 BoogieIcfgContainer [2022-01-10 05:31:04,063 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 05:31:04,064 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 05:31:04,064 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 05:31:04,066 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 05:31:04,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 05:30:57" (1/3) ... [2022-01-10 05:31:04,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24effacc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:31:04, skipping insertion in model container [2022-01-10 05:31:04,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:30:57" (2/3) ... [2022-01-10 05:31:04,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24effacc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:31:04, skipping insertion in model container [2022-01-10 05:31:04,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:31:04" (3/3) ... [2022-01-10 05:31:04,068 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label59.c [2022-01-10 05:31:04,071 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 05:31:04,072 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 05:31:04,104 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 05:31:04,108 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 05:31:04,108 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 05:31:04,131 INFO L276 IsEmpty]: Start isEmpty. Operand has 396 states, 394 states have (on average 1.8350253807106598) internal successors, (723), 395 states have internal predecessors, (723), 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 05:31:04,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-10 05:31:04,137 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:31:04,138 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] [2022-01-10 05:31:04,138 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:31:04,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:31:04,145 INFO L85 PathProgramCache]: Analyzing trace with hash 626000386, now seen corresponding path program 1 times [2022-01-10 05:31:04,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:31:04,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1354814045] [2022-01-10 05:31:04,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:31:04,156 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:31:04,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:31:04,157 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 05:31:04,158 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 05:31:04,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:31:04,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 05:31:04,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:31:04,406 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 05:31:04,406 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:31:04,406 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:31:04,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1354814045] [2022-01-10 05:31:04,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1354814045] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:31:04,407 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:31:04,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 05:31:04,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850163692] [2022-01-10 05:31:04,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:31:04,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:31:04,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:31:04,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:31:04,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:31:04,439 INFO L87 Difference]: Start difference. First operand has 396 states, 394 states have (on average 1.8350253807106598) internal successors, (723), 395 states have internal predecessors, (723), 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 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 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 05:31:11,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:31:11,277 INFO L93 Difference]: Finished difference Result 1137 states and 2118 transitions. [2022-01-10 05:31:11,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:31:11,279 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 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 44 [2022-01-10 05:31:11,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:31:11,290 INFO L225 Difference]: With dead ends: 1137 [2022-01-10 05:31:11,290 INFO L226 Difference]: Without dead ends: 662 [2022-01-10 05:31:11,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 42 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 05:31:11,296 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 309 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 1122 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 1299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 1122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-01-10 05:31:11,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [309 Valid, 198 Invalid, 1299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 1122 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2022-01-10 05:31:11,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2022-01-10 05:31:11,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 662. [2022-01-10 05:31:11,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 661 states have (on average 1.600605143721634) internal successors, (1058), 661 states have internal predecessors, (1058), 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 05:31:11,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 1058 transitions. [2022-01-10 05:31:11,354 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 1058 transitions. Word has length 44 [2022-01-10 05:31:11,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:31:11,354 INFO L470 AbstractCegarLoop]: Abstraction has 662 states and 1058 transitions. [2022-01-10 05:31:11,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 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 05:31:11,355 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 1058 transitions. [2022-01-10 05:31:11,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-01-10 05:31:11,357 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:31:11,357 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, 1, 1, 1, 1, 1, 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 05:31:11,366 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-01-10 05:31:11,564 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 05:31:11,564 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:31:11,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:31:11,565 INFO L85 PathProgramCache]: Analyzing trace with hash -228214936, now seen corresponding path program 1 times [2022-01-10 05:31:11,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:31:11,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1337020461] [2022-01-10 05:31:11,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:31:11,566 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:31:11,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:31:11,567 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 05:31:11,568 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 05:31:11,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:31:11,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 05:31:11,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:31:11,818 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:31:11,818 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:31:11,818 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:31:11,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1337020461] [2022-01-10 05:31:11,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1337020461] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:31:11,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:31:11,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 05:31:11,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924914278] [2022-01-10 05:31:11,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:31:11,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:31:11,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:31:11,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:31:11,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:31:11,821 INFO L87 Difference]: Start difference. First operand 662 states and 1058 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 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 05:31:19,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:31:19,534 INFO L93 Difference]: Finished difference Result 1980 states and 3169 transitions. [2022-01-10 05:31:19,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:31:19,535 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 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 109 [2022-01-10 05:31:19,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:31:19,539 INFO L225 Difference]: With dead ends: 1980 [2022-01-10 05:31:19,539 INFO L226 Difference]: Without dead ends: 1320 [2022-01-10 05:31:19,541 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 107 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 05:31:19,542 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 306 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 804 mSolverCounterSat, 390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 1194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 390 IncrementalHoareTripleChecker+Valid, 804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-01-10 05:31:19,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 197 Invalid, 1194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [390 Valid, 804 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2022-01-10 05:31:19,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1320 states. [2022-01-10 05:31:19,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1320 to 1320. [2022-01-10 05:31:19,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1320 states, 1319 states have (on average 1.3836239575435936) internal successors, (1825), 1319 states have internal predecessors, (1825), 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 05:31:19,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1320 states to 1320 states and 1825 transitions. [2022-01-10 05:31:19,573 INFO L78 Accepts]: Start accepts. Automaton has 1320 states and 1825 transitions. Word has length 109 [2022-01-10 05:31:19,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:31:19,573 INFO L470 AbstractCegarLoop]: Abstraction has 1320 states and 1825 transitions. [2022-01-10 05:31:19,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 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 05:31:19,573 INFO L276 IsEmpty]: Start isEmpty. Operand 1320 states and 1825 transitions. [2022-01-10 05:31:19,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-01-10 05:31:19,575 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:31:19,576 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:31:19,586 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-01-10 05:31:19,786 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 05:31:19,787 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:31:19,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:31:19,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1971144876, now seen corresponding path program 1 times [2022-01-10 05:31:19,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:31:19,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2135689716] [2022-01-10 05:31:19,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:31:19,788 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:31:19,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:31:19,789 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 05:31:19,790 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 05:31:19,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:31:19,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 05:31:19,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:31:20,050 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:31:20,050 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:31:20,051 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:31:20,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2135689716] [2022-01-10 05:31:20,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2135689716] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:31:20,051 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:31:20,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 05:31:20,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054643893] [2022-01-10 05:31:20,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:31:20,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:31:20,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:31:20,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:31:20,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:31:20,052 INFO L87 Difference]: Start difference. First operand 1320 states and 1825 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 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 05:31:28,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:31:28,035 INFO L93 Difference]: Finished difference Result 3296 states and 4650 transitions. [2022-01-10 05:31:28,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:31:28,036 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 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 117 [2022-01-10 05:31:28,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:31:28,041 INFO L225 Difference]: With dead ends: 3296 [2022-01-10 05:31:28,041 INFO L226 Difference]: Without dead ends: 1978 [2022-01-10 05:31:28,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 115 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 05:31:28,043 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 375 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 368 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 1179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 368 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-01-10 05:31:28,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [375 Valid, 155 Invalid, 1179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [368 Valid, 811 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2022-01-10 05:31:28,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1978 states. [2022-01-10 05:31:28,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1978 to 1978. [2022-01-10 05:31:28,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1978 states, 1977 states have (on average 1.287303995953465) internal successors, (2545), 1977 states have internal predecessors, (2545), 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 05:31:28,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1978 states to 1978 states and 2545 transitions. [2022-01-10 05:31:28,079 INFO L78 Accepts]: Start accepts. Automaton has 1978 states and 2545 transitions. Word has length 117 [2022-01-10 05:31:28,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:31:28,081 INFO L470 AbstractCegarLoop]: Abstraction has 1978 states and 2545 transitions. [2022-01-10 05:31:28,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 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 05:31:28,081 INFO L276 IsEmpty]: Start isEmpty. Operand 1978 states and 2545 transitions. [2022-01-10 05:31:28,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-01-10 05:31:28,087 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:31:28,087 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:31:28,095 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-01-10 05:31:28,293 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 05:31:28,296 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:31:28,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:31:28,296 INFO L85 PathProgramCache]: Analyzing trace with hash -912563919, now seen corresponding path program 1 times [2022-01-10 05:31:28,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:31:28,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [405895530] [2022-01-10 05:31:28,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:31:28,297 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:31:28,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:31:28,298 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 05:31:28,300 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 05:31:28,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:31:28,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 05:31:28,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:31:28,539 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:31:28,539 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:31:28,539 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:31:28,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [405895530] [2022-01-10 05:31:28,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [405895530] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:31:28,539 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:31:28,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 05:31:28,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219256000] [2022-01-10 05:31:28,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:31:28,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:31:28,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:31:28,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:31:28,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:31:28,541 INFO L87 Difference]: Start difference. First operand 1978 states and 2545 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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 05:31:35,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:31:35,921 INFO L93 Difference]: Finished difference Result 4612 states and 6170 transitions. [2022-01-10 05:31:35,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:31:35,927 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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 131 [2022-01-10 05:31:35,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:31:35,933 INFO L225 Difference]: With dead ends: 4612 [2022-01-10 05:31:35,934 INFO L226 Difference]: Without dead ends: 2636 [2022-01-10 05:31:35,935 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 129 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 05:31:35,936 INFO L933 BasicCegarLoop]: 533 mSDtfsCounter, 340 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 388 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 1184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 388 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-01-10 05:31:35,936 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 539 Invalid, 1184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [388 Valid, 796 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2022-01-10 05:31:35,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2636 states. [2022-01-10 05:31:35,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2636 to 2636. [2022-01-10 05:31:35,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2636 states, 2635 states have (on average 1.0869070208728653) internal successors, (2864), 2635 states have internal predecessors, (2864), 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 05:31:35,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2636 states to 2636 states and 2864 transitions. [2022-01-10 05:31:35,968 INFO L78 Accepts]: Start accepts. Automaton has 2636 states and 2864 transitions. Word has length 131 [2022-01-10 05:31:35,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:31:35,969 INFO L470 AbstractCegarLoop]: Abstraction has 2636 states and 2864 transitions. [2022-01-10 05:31:35,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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 05:31:35,969 INFO L276 IsEmpty]: Start isEmpty. Operand 2636 states and 2864 transitions. [2022-01-10 05:31:35,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-01-10 05:31:35,972 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:31:35,972 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:31:35,981 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 05:31:36,179 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 05:31:36,179 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:31:36,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:31:36,181 INFO L85 PathProgramCache]: Analyzing trace with hash -719671513, now seen corresponding path program 1 times [2022-01-10 05:31:36,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:31:36,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [890602700] [2022-01-10 05:31:36,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:31:36,182 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:31:36,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:31:36,200 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 05:31:36,201 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 05:31:36,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:31:36,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 05:31:36,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:31:36,461 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:31:36,461 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:31:36,462 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:31:36,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [890602700] [2022-01-10 05:31:36,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [890602700] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:31:36,462 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:31:36,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 05:31:36,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515060649] [2022-01-10 05:31:36,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:31:36,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:31:36,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:31:36,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:31:36,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:31:36,463 INFO L87 Difference]: Start difference. First operand 2636 states and 2864 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 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 05:31:39,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:31:39,578 INFO L93 Difference]: Finished difference Result 5270 states and 5745 transitions. [2022-01-10 05:31:39,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:31:39,581 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 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 146 [2022-01-10 05:31:39,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:31:39,589 INFO L225 Difference]: With dead ends: 5270 [2022-01-10 05:31:39,589 INFO L226 Difference]: Without dead ends: 3294 [2022-01-10 05:31:39,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 144 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 05:31:39,592 INFO L933 BasicCegarLoop]: 415 mSDtfsCounter, 299 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-01-10 05:31:39,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [299 Valid, 421 Invalid, 782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 736 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-01-10 05:31:39,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3294 states. [2022-01-10 05:31:39,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3294 to 3294. [2022-01-10 05:31:39,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3294 states, 3293 states have (on average 1.077740662010325) internal successors, (3549), 3293 states have internal predecessors, (3549), 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 05:31:39,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3294 states to 3294 states and 3549 transitions. [2022-01-10 05:31:39,627 INFO L78 Accepts]: Start accepts. Automaton has 3294 states and 3549 transitions. Word has length 146 [2022-01-10 05:31:39,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:31:39,627 INFO L470 AbstractCegarLoop]: Abstraction has 3294 states and 3549 transitions. [2022-01-10 05:31:39,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 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 05:31:39,628 INFO L276 IsEmpty]: Start isEmpty. Operand 3294 states and 3549 transitions. [2022-01-10 05:31:39,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2022-01-10 05:31:39,630 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:31:39,630 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:31:39,643 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 05:31:39,837 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 05:31:39,838 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:31:39,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:31:39,838 INFO L85 PathProgramCache]: Analyzing trace with hash -394371157, now seen corresponding path program 1 times [2022-01-10 05:31:39,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:31:39,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1804874435] [2022-01-10 05:31:39,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:31:39,840 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:31:39,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:31:39,841 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 05:31:39,844 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 05:31:39,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:31:39,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 05:31:39,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:31:40,457 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:31:40,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 05:31:41,160 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:31:41,161 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:31:41,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1804874435] [2022-01-10 05:31:41,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1804874435] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 05:31:41,161 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 05:31:41,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2022-01-10 05:31:41,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765071119] [2022-01-10 05:31:41,161 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 05:31:41,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 05:31:41,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:31:41,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 05:31:41,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 05:31:41,163 INFO L87 Difference]: Start difference. First operand 3294 states and 3549 transitions. Second operand has 6 states, 6 states have (on average 95.5) internal successors, (573), 5 states have internal predecessors, (573), 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 05:31:44,226 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 05:31:48,046 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []