/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/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 06:45:43,861 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 06:45:43,862 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 06:45:43,906 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 06:45:43,906 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 06:45:43,907 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 06:45:43,908 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 06:45:43,909 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 06:45:43,911 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 06:45:43,911 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 06:45:43,912 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 06:45:43,912 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 06:45:43,913 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 06:45:43,913 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 06:45:43,914 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 06:45:43,915 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 06:45:43,915 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 06:45:43,916 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 06:45:43,917 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 06:45:43,918 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 06:45:43,919 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 06:45:43,920 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 06:45:43,921 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 06:45:43,922 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 06:45:43,923 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 06:45:43,928 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 06:45:43,929 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 06:45:43,930 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 06:45:43,936 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 06:45:43,951 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 06:45:43,951 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 06:45:43,951 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 06:45:43,951 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 06:45:43,952 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 06:45:43,952 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 06:45:43,952 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 06:45:43,952 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 06:45:43,952 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 06:45:43,953 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 06:45:43,953 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 06:45:43,953 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 06:45:43,953 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 06:45:43,953 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 06:45:43,953 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 06:45:43,953 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 06:45:43,953 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 06:45:43,953 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 06:45:43,953 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 06:45:43,954 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 06:45:43,954 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 06:45:43,954 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 06:45:43,954 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 06:45:43,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:45:43,954 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 06:45:43,954 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 06:45:43,954 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 06:45:43,954 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 06:45:43,955 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 06:45:43,955 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 06:45:43,955 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 06:45:43,955 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 06:45:43,955 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 06:45:43,955 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 06:45:44,134 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 06:45:44,153 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 06:45:44,155 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 06:45:44,155 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 06:45:44,165 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 06:45:44,166 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c [2022-01-10 06:45:44,222 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/424892442/ee385a374b2a4fe9ba4e766c846ce111/FLAGebb5d1c55 [2022-01-10 06:45:44,602 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 06:45:44,602 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c [2022-01-10 06:45:44,614 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/424892442/ee385a374b2a4fe9ba4e766c846ce111/FLAGebb5d1c55 [2022-01-10 06:45:44,985 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/424892442/ee385a374b2a4fe9ba4e766c846ce111 [2022-01-10 06:45:44,987 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 06:45:44,988 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 06:45:44,992 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 06:45:44,993 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 06:45:44,995 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 06:45:44,995 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:45:44" (1/1) ... [2022-01-10 06:45:44,997 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@428b9b72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:45:44, skipping insertion in model container [2022-01-10 06:45:44,997 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:45:44" (1/1) ... [2022-01-10 06:45:45,002 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 06:45:45,030 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 06:45:45,212 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c[14577,14590] [2022-01-10 06:45:45,214 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:45:45,225 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 06:45:45,297 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c[14577,14590] [2022-01-10 06:45:45,298 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:45:45,313 INFO L208 MainTranslator]: Completed translation [2022-01-10 06:45:45,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:45:45 WrapperNode [2022-01-10 06:45:45,314 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 06:45:45,315 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 06:45:45,315 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 06:45:45,315 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 06:45:45,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:45:45" (1/1) ... [2022-01-10 06:45:45,330 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:45:45" (1/1) ... [2022-01-10 06:45:45,357 INFO L137 Inliner]: procedures = 32, calls = 47, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 516 [2022-01-10 06:45:45,358 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 06:45:45,358 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 06:45:45,358 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 06:45:45,358 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 06:45:45,377 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:45:45" (1/1) ... [2022-01-10 06:45:45,377 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:45:45" (1/1) ... [2022-01-10 06:45:45,381 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:45:45" (1/1) ... [2022-01-10 06:45:45,381 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:45:45" (1/1) ... [2022-01-10 06:45:45,389 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:45:45" (1/1) ... [2022-01-10 06:45:45,394 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:45:45" (1/1) ... [2022-01-10 06:45:45,406 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:45:45" (1/1) ... [2022-01-10 06:45:45,409 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 06:45:45,413 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 06:45:45,413 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 06:45:45,413 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 06:45:45,414 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:45:45" (1/1) ... [2022-01-10 06:45:45,419 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:45:45,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 06:45:45,438 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 06:45:45,443 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 06:45:45,462 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2022-01-10 06:45:45,462 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2022-01-10 06:45:45,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 06:45:45,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 06:45:45,462 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2022-01-10 06:45:45,462 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2022-01-10 06:45:45,462 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-01-10 06:45:45,463 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-01-10 06:45:45,463 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-10 06:45:45,463 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-10 06:45:45,463 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2022-01-10 06:45:45,463 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2022-01-10 06:45:45,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 06:45:45,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 06:45:45,463 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2022-01-10 06:45:45,463 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2022-01-10 06:45:45,629 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 06:45:45,630 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 06:45:45,964 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 06:45:45,973 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 06:45:45,974 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 06:45:45,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:45:45 BoogieIcfgContainer [2022-01-10 06:45:45,975 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 06:45:45,976 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 06:45:45,977 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 06:45:45,979 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 06:45:45,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:45:44" (1/3) ... [2022-01-10 06:45:45,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ba19a72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:45:45, skipping insertion in model container [2022-01-10 06:45:45,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:45:45" (2/3) ... [2022-01-10 06:45:45,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ba19a72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:45:45, skipping insertion in model container [2022-01-10 06:45:45,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:45:45" (3/3) ... [2022-01-10 06:45:45,982 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c [2022-01-10 06:45:45,986 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 06:45:45,986 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 06:45:46,021 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 06:45:46,026 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 06:45:46,026 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 06:45:46,045 INFO L276 IsEmpty]: Start isEmpty. Operand has 199 states, 162 states have (on average 1.5617283950617284) internal successors, (253), 164 states have internal predecessors, (253), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-01-10 06:45:46,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-10 06:45:46,049 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:45:46,050 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 06:45:46,050 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:45:46,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:45:46,054 INFO L85 PathProgramCache]: Analyzing trace with hash 11515241, now seen corresponding path program 1 times [2022-01-10 06:45:46,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:45:46,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1215695065] [2022-01-10 06:45:46,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:45:46,063 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:45:46,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:45:46,077 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 06:45:46,078 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 06:45:46,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:45:46,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 1 conjunts are in the unsatisfiable core [2022-01-10 06:45:46,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:45:46,281 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 06:45:46,281 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:45:46,282 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:45:46,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1215695065] [2022-01-10 06:45:46,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1215695065] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:45:46,283 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:45:46,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 06:45:46,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991555600] [2022-01-10 06:45:46,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:45:46,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 06:45:46,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:45:46,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 06:45:46,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 06:45:46,315 INFO L87 Difference]: Start difference. First operand has 199 states, 162 states have (on average 1.5617283950617284) internal successors, (253), 164 states have internal predecessors, (253), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-10 06:45:46,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:45:46,371 INFO L93 Difference]: Finished difference Result 378 states and 619 transitions. [2022-01-10 06:45:46,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 06:45:46,375 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2022-01-10 06:45:46,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:45:46,387 INFO L225 Difference]: With dead ends: 378 [2022-01-10 06:45:46,388 INFO L226 Difference]: Without dead ends: 195 [2022-01-10 06:45:46,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 43 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 06:45:46,397 INFO L933 BasicCegarLoop]: 298 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, 298 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 06:45:46,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:45:46,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2022-01-10 06:45:46,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2022-01-10 06:45:46,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 159 states have (on average 1.509433962264151) internal successors, (240), 160 states have internal predecessors, (240), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-01-10 06:45:46,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 298 transitions. [2022-01-10 06:45:46,449 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 298 transitions. Word has length 44 [2022-01-10 06:45:46,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:45:46,449 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 298 transitions. [2022-01-10 06:45:46,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-10 06:45:46,450 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 298 transitions. [2022-01-10 06:45:46,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-10 06:45:46,451 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:45:46,452 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 06:45:46,460 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 06:45:46,660 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 06:45:46,660 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:45:46,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:45:46,661 INFO L85 PathProgramCache]: Analyzing trace with hash -419952089, now seen corresponding path program 1 times [2022-01-10 06:45:46,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:45:46,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [381855808] [2022-01-10 06:45:46,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:45:46,662 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:45:46,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:45:46,663 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 06:45:46,663 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 06:45:46,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:45:46,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 06:45:46,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:45:46,852 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 06:45:46,852 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:45:46,852 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:45:46,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [381855808] [2022-01-10 06:45:46,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [381855808] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:45:46,853 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:45:46,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 06:45:46,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471636759] [2022-01-10 06:45:46,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:45:46,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 06:45:46,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:45:46,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 06:45:46,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:45:46,855 INFO L87 Difference]: Start difference. First operand 195 states and 298 transitions. Second operand has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-10 06:45:46,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:45:46,920 INFO L93 Difference]: Finished difference Result 376 states and 570 transitions. [2022-01-10 06:45:46,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 06:45:46,921 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2022-01-10 06:45:46,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:45:46,924 INFO L225 Difference]: With dead ends: 376 [2022-01-10 06:45:46,924 INFO L226 Difference]: Without dead ends: 195 [2022-01-10 06:45:46,928 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:45:46,930 INFO L933 BasicCegarLoop]: 294 mSDtfsCounter, 171 mSDsluCounter, 961 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 1255 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:45:46,930 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [195 Valid, 1255 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:45:46,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2022-01-10 06:45:46,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2022-01-10 06:45:46,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 159 states have (on average 1.4339622641509433) internal successors, (228), 160 states have internal predecessors, (228), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-01-10 06:45:46,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 286 transitions. [2022-01-10 06:45:46,950 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 286 transitions. Word has length 44 [2022-01-10 06:45:46,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:45:46,951 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 286 transitions. [2022-01-10 06:45:46,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-10 06:45:46,951 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 286 transitions. [2022-01-10 06:45:46,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-10 06:45:46,952 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:45:46,953 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] [2022-01-10 06:45:46,965 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 06:45:47,163 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 06:45:47,164 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:45:47,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:45:47,164 INFO L85 PathProgramCache]: Analyzing trace with hash -752782365, now seen corresponding path program 1 times [2022-01-10 06:45:47,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:45:47,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [554217405] [2022-01-10 06:45:47,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:45:47,165 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:45:47,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:45:47,166 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 06:45:47,167 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 06:45:47,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:45:47,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:45:47,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:45:47,361 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 06:45:47,361 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:45:47,361 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:45:47,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [554217405] [2022-01-10 06:45:47,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [554217405] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:45:47,362 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:45:47,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:45:47,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667573468] [2022-01-10 06:45:47,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:45:47,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:45:47,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:45:47,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:45:47,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:45:47,363 INFO L87 Difference]: Start difference. First operand 195 states and 286 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-10 06:45:47,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:45:47,393 INFO L93 Difference]: Finished difference Result 379 states and 565 transitions. [2022-01-10 06:45:47,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:45:47,394 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2022-01-10 06:45:47,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:45:47,396 INFO L225 Difference]: With dead ends: 379 [2022-01-10 06:45:47,396 INFO L226 Difference]: Without dead ends: 201 [2022-01-10 06:45:47,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:45:47,398 INFO L933 BasicCegarLoop]: 280 mSDtfsCounter, 6 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:45:47,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 830 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:45:47,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-01-10 06:45:47,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 199. [2022-01-10 06:45:47,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 162 states have (on average 1.4259259259259258) internal successors, (231), 163 states have internal predecessors, (231), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-01-10 06:45:47,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 289 transitions. [2022-01-10 06:45:47,407 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 289 transitions. Word has length 55 [2022-01-10 06:45:47,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:45:47,407 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 289 transitions. [2022-01-10 06:45:47,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-10 06:45:47,407 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 289 transitions. [2022-01-10 06:45:47,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 06:45:47,409 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:45:47,413 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:45:47,423 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 06:45:47,623 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 06:45:47,624 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:45:47,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:45:47,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1335268689, now seen corresponding path program 1 times [2022-01-10 06:45:47,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:45:47,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1852869813] [2022-01-10 06:45:47,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:45:47,625 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:45:47,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:45:47,626 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 06:45:47,628 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 06:45:47,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:45:47,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:45:47,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:45:47,849 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:45:47,849 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:45:47,849 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:45:47,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1852869813] [2022-01-10 06:45:47,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1852869813] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:45:47,849 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:45:47,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:45:47,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030102901] [2022-01-10 06:45:47,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:45:47,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:45:47,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:45:47,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:45:47,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:45:47,851 INFO L87 Difference]: Start difference. First operand 199 states and 289 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-10 06:45:48,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:45:48,099 INFO L93 Difference]: Finished difference Result 570 states and 848 transitions. [2022-01-10 06:45:48,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:45:48,100 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 71 [2022-01-10 06:45:48,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:45:48,102 INFO L225 Difference]: With dead ends: 570 [2022-01-10 06:45:48,102 INFO L226 Difference]: Without dead ends: 388 [2022-01-10 06:45:48,103 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 67 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 06:45:48,104 INFO L933 BasicCegarLoop]: 275 mSDtfsCounter, 752 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 752 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:45:48,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [752 Valid, 740 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:45:48,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2022-01-10 06:45:48,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 260. [2022-01-10 06:45:48,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 221 states have (on average 1.416289592760181) internal successors, (313), 221 states have internal predecessors, (313), 30 states have call successors, (30), 8 states have call predecessors, (30), 8 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2022-01-10 06:45:48,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 373 transitions. [2022-01-10 06:45:48,114 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 373 transitions. Word has length 71 [2022-01-10 06:45:48,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:45:48,114 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 373 transitions. [2022-01-10 06:45:48,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-10 06:45:48,114 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 373 transitions. [2022-01-10 06:45:48,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 06:45:48,115 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:45:48,115 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:45:48,123 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 06:45:48,323 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 06:45:48,323 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:45:48,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:45:48,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1361597314, now seen corresponding path program 1 times [2022-01-10 06:45:48,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:45:48,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1733703535] [2022-01-10 06:45:48,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:45:48,325 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:45:48,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:45:48,325 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 06:45:48,327 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 06:45:48,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:45:48,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:45:48,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:45:48,546 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:45:48,546 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:45:48,546 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:45:48,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1733703535] [2022-01-10 06:45:48,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1733703535] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:45:48,546 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:45:48,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:45:48,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245171561] [2022-01-10 06:45:48,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:45:48,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:45:48,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:45:48,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:45:48,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:45:48,548 INFO L87 Difference]: Start difference. First operand 260 states and 373 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-10 06:45:48,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:45:48,756 INFO L93 Difference]: Finished difference Result 571 states and 847 transitions. [2022-01-10 06:45:48,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:45:48,756 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 72 [2022-01-10 06:45:48,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:45:48,758 INFO L225 Difference]: With dead ends: 571 [2022-01-10 06:45:48,758 INFO L226 Difference]: Without dead ends: 389 [2022-01-10 06:45:48,759 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 68 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 06:45:48,759 INFO L933 BasicCegarLoop]: 275 mSDtfsCounter, 749 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 749 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:45:48,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [749 Valid, 742 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:45:48,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2022-01-10 06:45:48,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 261. [2022-01-10 06:45:48,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 222 states have (on average 1.40990990990991) internal successors, (313), 222 states have internal predecessors, (313), 30 states have call successors, (30), 8 states have call predecessors, (30), 8 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2022-01-10 06:45:48,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 373 transitions. [2022-01-10 06:45:48,769 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 373 transitions. Word has length 72 [2022-01-10 06:45:48,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:45:48,769 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 373 transitions. [2022-01-10 06:45:48,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-10 06:45:48,769 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 373 transitions. [2022-01-10 06:45:48,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-10 06:45:48,770 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:45:48,770 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:45:48,779 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 06:45:48,979 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 06:45:48,979 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:45:48,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:45:48,980 INFO L85 PathProgramCache]: Analyzing trace with hash -824206269, now seen corresponding path program 1 times [2022-01-10 06:45:48,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:45:48,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [610577982] [2022-01-10 06:45:48,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:45:48,980 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:45:48,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:45:48,981 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 06:45:48,982 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 06:45:49,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:45:49,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:45:49,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:45:49,156 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:45:49,156 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:45:49,156 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:45:49,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [610577982] [2022-01-10 06:45:49,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [610577982] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:45:49,156 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:45:49,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:45:49,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8553619] [2022-01-10 06:45:49,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:45:49,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:45:49,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:45:49,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:45:49,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:45:49,158 INFO L87 Difference]: Start difference. First operand 261 states and 373 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-10 06:45:49,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:45:49,186 INFO L93 Difference]: Finished difference Result 641 states and 932 transitions. [2022-01-10 06:45:49,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:45:49,186 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 75 [2022-01-10 06:45:49,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:45:49,213 INFO L225 Difference]: With dead ends: 641 [2022-01-10 06:45:49,213 INFO L226 Difference]: Without dead ends: 459 [2022-01-10 06:45:49,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 73 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 06:45:49,217 INFO L933 BasicCegarLoop]: 326 mSDtfsCounter, 214 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:45:49,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [214 Valid, 597 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:45:49,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2022-01-10 06:45:49,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 450. [2022-01-10 06:45:49,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 374 states have (on average 1.4224598930481283) internal successors, (532), 375 states have internal predecessors, (532), 59 states have call successors, (59), 16 states have call predecessors, (59), 16 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2022-01-10 06:45:49,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 650 transitions. [2022-01-10 06:45:49,240 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 650 transitions. Word has length 75 [2022-01-10 06:45:49,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:45:49,240 INFO L470 AbstractCegarLoop]: Abstraction has 450 states and 650 transitions. [2022-01-10 06:45:49,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-10 06:45:49,240 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 650 transitions. [2022-01-10 06:45:49,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-10 06:45:49,241 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:45:49,241 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:45:49,254 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 06:45:49,454 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 06:45:49,454 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:45:49,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:45:49,455 INFO L85 PathProgramCache]: Analyzing trace with hash -559886893, now seen corresponding path program 1 times [2022-01-10 06:45:49,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:45:49,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [152471413] [2022-01-10 06:45:49,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:45:49,455 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:45:49,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:45:49,456 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 06:45:49,457 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 06:45:49,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:45:49,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:45:49,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:45:49,637 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 06:45:49,637 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:45:49,638 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:45:49,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [152471413] [2022-01-10 06:45:49,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [152471413] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:45:49,638 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:45:49,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:45:49,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929211882] [2022-01-10 06:45:49,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:45:49,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:45:49,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:45:49,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:45:49,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:45:49,639 INFO L87 Difference]: Start difference. First operand 450 states and 650 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-01-10 06:45:49,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:45:49,666 INFO L93 Difference]: Finished difference Result 799 states and 1169 transitions. [2022-01-10 06:45:49,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:45:49,666 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 76 [2022-01-10 06:45:49,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:45:49,668 INFO L225 Difference]: With dead ends: 799 [2022-01-10 06:45:49,668 INFO L226 Difference]: Without dead ends: 464 [2022-01-10 06:45:49,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:45:49,669 INFO L933 BasicCegarLoop]: 283 mSDtfsCounter, 7 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 846 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:45:49,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 846 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:45:49,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2022-01-10 06:45:49,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 460. [2022-01-10 06:45:49,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 382 states have (on average 1.4136125654450262) internal successors, (540), 383 states have internal predecessors, (540), 59 states have call successors, (59), 18 states have call predecessors, (59), 18 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2022-01-10 06:45:49,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 658 transitions. [2022-01-10 06:45:49,684 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 658 transitions. Word has length 76 [2022-01-10 06:45:49,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:45:49,684 INFO L470 AbstractCegarLoop]: Abstraction has 460 states and 658 transitions. [2022-01-10 06:45:49,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-01-10 06:45:49,685 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 658 transitions. [2022-01-10 06:45:49,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 06:45:49,685 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:45:49,685 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:45:49,695 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 06:45:49,891 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 06:45:49,892 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:45:49,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:45:49,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1187329977, now seen corresponding path program 1 times [2022-01-10 06:45:49,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:45:49,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1499575014] [2022-01-10 06:45:49,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:45:49,893 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:45:49,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:45:49,894 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 06:45:49,895 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 06:45:49,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:45:49,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:45:49,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:45:50,056 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 06:45:50,056 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:45:50,056 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:45:50,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1499575014] [2022-01-10 06:45:50,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1499575014] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:45:50,056 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:45:50,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:45:50,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683198033] [2022-01-10 06:45:50,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:45:50,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:45:50,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:45:50,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:45:50,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:45:50,058 INFO L87 Difference]: Start difference. First operand 460 states and 658 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-01-10 06:45:50,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:45:50,096 INFO L93 Difference]: Finished difference Result 819 states and 1195 transitions. [2022-01-10 06:45:50,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:45:50,097 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 84 [2022-01-10 06:45:50,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:45:50,099 INFO L225 Difference]: With dead ends: 819 [2022-01-10 06:45:50,099 INFO L226 Difference]: Without dead ends: 474 [2022-01-10 06:45:50,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:45:50,100 INFO L933 BasicCegarLoop]: 282 mSDtfsCounter, 7 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 838 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:45:50,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 838 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:45:50,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2022-01-10 06:45:50,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 470. [2022-01-10 06:45:50,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 390 states have (on average 1.405128205128205) internal successors, (548), 391 states have internal predecessors, (548), 59 states have call successors, (59), 20 states have call predecessors, (59), 20 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2022-01-10 06:45:50,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 666 transitions. [2022-01-10 06:45:50,113 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 666 transitions. Word has length 84 [2022-01-10 06:45:50,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:45:50,114 INFO L470 AbstractCegarLoop]: Abstraction has 470 states and 666 transitions. [2022-01-10 06:45:50,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-01-10 06:45:50,114 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 666 transitions. [2022-01-10 06:45:50,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-01-10 06:45:50,115 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:45:50,115 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 06:45:50,123 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 06:45:50,323 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 06:45:50,323 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:45:50,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:45:50,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1492689475, now seen corresponding path program 1 times [2022-01-10 06:45:50,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:45:50,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1799022412] [2022-01-10 06:45:50,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:45:50,324 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:45:50,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:45:50,325 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 06:45:50,327 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 06:45:50,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:45:50,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:45:50,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:45:50,519 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 06:45:50,520 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:45:50,520 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:45:50,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1799022412] [2022-01-10 06:45:50,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1799022412] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:45:50,520 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:45:50,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:45:50,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197468021] [2022-01-10 06:45:50,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:45:50,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:45:50,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:45:50,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:45:50,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:45:50,521 INFO L87 Difference]: Start difference. First operand 470 states and 666 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-01-10 06:45:50,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:45:50,549 INFO L93 Difference]: Finished difference Result 837 states and 1199 transitions. [2022-01-10 06:45:50,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:45:50,549 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 92 [2022-01-10 06:45:50,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:45:50,551 INFO L225 Difference]: With dead ends: 837 [2022-01-10 06:45:50,551 INFO L226 Difference]: Without dead ends: 482 [2022-01-10 06:45:50,552 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:45:50,553 INFO L933 BasicCegarLoop]: 284 mSDtfsCounter, 6 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 838 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:45:50,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 838 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:45:50,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2022-01-10 06:45:50,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 478. [2022-01-10 06:45:50,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 396 states have (on average 1.398989898989899) internal successors, (554), 397 states have internal predecessors, (554), 59 states have call successors, (59), 22 states have call predecessors, (59), 22 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2022-01-10 06:45:50,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 672 transitions. [2022-01-10 06:45:50,566 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 672 transitions. Word has length 92 [2022-01-10 06:45:50,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:45:50,566 INFO L470 AbstractCegarLoop]: Abstraction has 478 states and 672 transitions. [2022-01-10 06:45:50,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-01-10 06:45:50,566 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 672 transitions. [2022-01-10 06:45:50,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-01-10 06:45:50,567 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:45:50,567 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:45:50,577 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 06:45:50,774 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 06:45:50,774 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:45:50,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:45:50,775 INFO L85 PathProgramCache]: Analyzing trace with hash -405818518, now seen corresponding path program 1 times [2022-01-10 06:45:50,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:45:50,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [123298208] [2022-01-10 06:45:50,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:45:50,775 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:45:50,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:45:50,776 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 06:45:50,777 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 06:45:50,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:45:50,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:45:50,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:45:51,072 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:45:51,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:45:51,252 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 06:45:51,252 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:45:51,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [123298208] [2022-01-10 06:45:51,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [123298208] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-10 06:45:51,253 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 06:45:51,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 8 [2022-01-10 06:45:51,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563046486] [2022-01-10 06:45:51,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:45:51,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 06:45:51,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:45:51,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 06:45:51,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:45:51,254 INFO L87 Difference]: Start difference. First operand 478 states and 672 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-01-10 06:45:51,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:45:51,492 INFO L93 Difference]: Finished difference Result 1323 states and 1902 transitions. [2022-01-10 06:45:51,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 06:45:51,492 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 92 [2022-01-10 06:45:51,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:45:51,496 INFO L225 Difference]: With dead ends: 1323 [2022-01-10 06:45:51,496 INFO L226 Difference]: Without dead ends: 960 [2022-01-10 06:45:51,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 176 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-01-10 06:45:51,498 INFO L933 BasicCegarLoop]: 395 mSDtfsCounter, 445 mSDsluCounter, 1736 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 2131 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:45:51,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [468 Valid, 2131 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:45:51,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2022-01-10 06:45:51,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 621. [2022-01-10 06:45:51,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 621 states, 501 states have (on average 1.3952095808383234) internal successors, (699), 503 states have internal predecessors, (699), 86 states have call successors, (86), 33 states have call predecessors, (86), 33 states have return successors, (86), 84 states have call predecessors, (86), 86 states have call successors, (86) [2022-01-10 06:45:51,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 871 transitions. [2022-01-10 06:45:51,521 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 871 transitions. Word has length 92 [2022-01-10 06:45:51,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:45:51,521 INFO L470 AbstractCegarLoop]: Abstraction has 621 states and 871 transitions. [2022-01-10 06:45:51,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-01-10 06:45:51,522 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 871 transitions. [2022-01-10 06:45:51,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 06:45:51,522 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:45:51,522 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 06:45:51,529 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 06:45:51,728 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 06:45:51,729 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:45:51,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:45:51,729 INFO L85 PathProgramCache]: Analyzing trace with hash 120090852, now seen corresponding path program 1 times [2022-01-10 06:45:51,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:45:51,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1848840877] [2022-01-10 06:45:51,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:45:51,730 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:45:51,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:45:51,731 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 06:45:51,732 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 06:45:51,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:45:51,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:45:51,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:45:51,932 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-10 06:45:51,933 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:45:51,933 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:45:51,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1848840877] [2022-01-10 06:45:51,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1848840877] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:45:51,933 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:45:51,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:45:51,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930723504] [2022-01-10 06:45:51,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:45:51,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:45:51,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:45:51,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:45:51,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:45:51,934 INFO L87 Difference]: Start difference. First operand 621 states and 871 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-01-10 06:45:51,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:45:51,973 INFO L93 Difference]: Finished difference Result 1115 states and 1596 transitions. [2022-01-10 06:45:51,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:45:51,973 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 99 [2022-01-10 06:45:51,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:45:51,975 INFO L225 Difference]: With dead ends: 1115 [2022-01-10 06:45:51,975 INFO L226 Difference]: Without dead ends: 642 [2022-01-10 06:45:51,976 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:45:51,977 INFO L933 BasicCegarLoop]: 282 mSDtfsCounter, 7 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 838 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:45:51,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 838 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:45:51,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2022-01-10 06:45:51,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 636. [2022-01-10 06:45:51,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 513 states have (on average 1.3859649122807018) internal successors, (711), 515 states have internal predecessors, (711), 86 states have call successors, (86), 36 states have call predecessors, (86), 36 states have return successors, (86), 84 states have call predecessors, (86), 86 states have call successors, (86) [2022-01-10 06:45:51,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 883 transitions. [2022-01-10 06:45:51,996 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 883 transitions. Word has length 99 [2022-01-10 06:45:51,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:45:51,996 INFO L470 AbstractCegarLoop]: Abstraction has 636 states and 883 transitions. [2022-01-10 06:45:51,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-01-10 06:45:51,996 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 883 transitions. [2022-01-10 06:45:51,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-01-10 06:45:51,997 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:45:51,997 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 06:45:52,017 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 06:45:52,203 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 06:45:52,204 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:45:52,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:45:52,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1291996142, now seen corresponding path program 1 times [2022-01-10 06:45:52,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:45:52,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1877753690] [2022-01-10 06:45:52,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:45:52,205 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:45:52,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:45:52,206 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 06:45:52,208 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 06:45:52,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:45:52,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:45:52,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:45:52,441 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-10 06:45:52,441 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:45:52,442 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:45:52,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1877753690] [2022-01-10 06:45:52,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1877753690] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:45:52,442 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:45:52,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:45:52,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601428276] [2022-01-10 06:45:52,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:45:52,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:45:52,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:45:52,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:45:52,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:45:52,443 INFO L87 Difference]: Start difference. First operand 636 states and 883 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-01-10 06:45:52,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:45:52,480 INFO L93 Difference]: Finished difference Result 1139 states and 1597 transitions. [2022-01-10 06:45:52,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:45:52,481 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 107 [2022-01-10 06:45:52,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:45:52,483 INFO L225 Difference]: With dead ends: 1139 [2022-01-10 06:45:52,483 INFO L226 Difference]: Without dead ends: 654 [2022-01-10 06:45:52,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:45:52,485 INFO L933 BasicCegarLoop]: 284 mSDtfsCounter, 6 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 838 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:45:52,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 838 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:45:52,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2022-01-10 06:45:52,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 648. [2022-01-10 06:45:52,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 648 states, 522 states have (on average 1.3793103448275863) internal successors, (720), 524 states have internal predecessors, (720), 86 states have call successors, (86), 39 states have call predecessors, (86), 39 states have return successors, (86), 84 states have call predecessors, (86), 86 states have call successors, (86) [2022-01-10 06:45:52,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 892 transitions. [2022-01-10 06:45:52,503 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 892 transitions. Word has length 107 [2022-01-10 06:45:52,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:45:52,503 INFO L470 AbstractCegarLoop]: Abstraction has 648 states and 892 transitions. [2022-01-10 06:45:52,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-01-10 06:45:52,504 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 892 transitions. [2022-01-10 06:45:52,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-01-10 06:45:52,504 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:45:52,504 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-01-10 06:45:52,516 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 06:45:52,711 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 06:45:52,711 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:45:52,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:45:52,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1282029150, now seen corresponding path program 1 times [2022-01-10 06:45:52,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:45:52,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1730397238] [2022-01-10 06:45:52,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:45:52,712 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:45:52,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:45:52,714 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 06:45:52,715 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 06:45:52,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:45:52,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:45:52,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:45:52,974 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-10 06:45:52,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:45:53,174 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-10 06:45:53,174 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:45:53,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1730397238] [2022-01-10 06:45:53,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1730397238] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:45:53,174 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:45:53,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2022-01-10 06:45:53,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724895102] [2022-01-10 06:45:53,174 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:45:53,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 06:45:53,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:45:53,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 06:45:53,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:45:53,175 INFO L87 Difference]: Start difference. First operand 648 states and 892 transitions. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 7 states have internal predecessors, (104), 3 states have call successors, (16), 4 states have call predecessors, (16), 6 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2022-01-10 06:45:53,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:45:53,397 INFO L93 Difference]: Finished difference Result 1350 states and 1903 transitions. [2022-01-10 06:45:53,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 06:45:53,397 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 7 states have internal predecessors, (104), 3 states have call successors, (16), 4 states have call predecessors, (16), 6 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) Word has length 108 [2022-01-10 06:45:53,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:45:53,401 INFO L225 Difference]: With dead ends: 1350 [2022-01-10 06:45:53,401 INFO L226 Difference]: Without dead ends: 861 [2022-01-10 06:45:53,402 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 208 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-01-10 06:45:53,403 INFO L933 BasicCegarLoop]: 477 mSDtfsCounter, 437 mSDsluCounter, 2426 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 2903 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:45:53,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [459 Valid, 2903 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:45:53,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2022-01-10 06:45:53,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 648. [2022-01-10 06:45:53,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 648 states, 522 states have (on average 1.3773946360153257) internal successors, (719), 524 states have internal predecessors, (719), 86 states have call successors, (86), 39 states have call predecessors, (86), 39 states have return successors, (86), 84 states have call predecessors, (86), 86 states have call successors, (86) [2022-01-10 06:45:53,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 891 transitions. [2022-01-10 06:45:53,424 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 891 transitions. Word has length 108 [2022-01-10 06:45:53,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:45:53,425 INFO L470 AbstractCegarLoop]: Abstraction has 648 states and 891 transitions. [2022-01-10 06:45:53,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 7 states have internal predecessors, (104), 3 states have call successors, (16), 4 states have call predecessors, (16), 6 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2022-01-10 06:45:53,425 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 891 transitions. [2022-01-10 06:45:53,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 06:45:53,425 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:45:53,426 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 06:45:53,434 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 06:45:53,632 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 06:45:53,633 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:45:53,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:45:53,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1990320010, now seen corresponding path program 1 times [2022-01-10 06:45:53,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:45:53,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1118993868] [2022-01-10 06:45:53,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:45:53,634 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:45:53,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:45:53,634 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 06:45:53,635 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 06:45:53,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:45:53,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:45:53,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:45:53,896 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 06:45:53,896 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:45:53,896 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:45:53,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1118993868] [2022-01-10 06:45:53,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1118993868] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:45:53,896 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:45:53,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 06:45:53,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477385069] [2022-01-10 06:45:53,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:45:53,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 06:45:53,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:45:53,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 06:45:53,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:45:53,898 INFO L87 Difference]: Start difference. First operand 648 states and 891 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 06:45:54,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:45:54,285 INFO L93 Difference]: Finished difference Result 2113 states and 3001 transitions. [2022-01-10 06:45:54,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 06:45:54,286 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 112 [2022-01-10 06:45:54,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:45:54,293 INFO L225 Difference]: With dead ends: 2113 [2022-01-10 06:45:54,294 INFO L226 Difference]: Without dead ends: 1593 [2022-01-10 06:45:54,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-01-10 06:45:54,297 INFO L933 BasicCegarLoop]: 544 mSDtfsCounter, 764 mSDsluCounter, 1657 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 764 SdHoareTripleChecker+Valid, 2201 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 06:45:54,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [764 Valid, 2201 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 06:45:54,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1593 states. [2022-01-10 06:45:54,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1593 to 1107. [2022-01-10 06:45:54,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1107 states, 858 states have (on average 1.3554778554778555) internal successors, (1163), 863 states have internal predecessors, (1163), 171 states have call successors, (171), 77 states have call predecessors, (171), 77 states have return successors, (171), 166 states have call predecessors, (171), 171 states have call successors, (171) [2022-01-10 06:45:54,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1107 states to 1107 states and 1505 transitions. [2022-01-10 06:45:54,352 INFO L78 Accepts]: Start accepts. Automaton has 1107 states and 1505 transitions. Word has length 112 [2022-01-10 06:45:54,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:45:54,352 INFO L470 AbstractCegarLoop]: Abstraction has 1107 states and 1505 transitions. [2022-01-10 06:45:54,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 06:45:54,353 INFO L276 IsEmpty]: Start isEmpty. Operand 1107 states and 1505 transitions. [2022-01-10 06:45:54,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-01-10 06:45:54,354 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:45:54,355 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 06:45:54,380 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 06:45:54,564 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 06:45:54,564 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:45:54,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:45:54,565 INFO L85 PathProgramCache]: Analyzing trace with hash -843577524, now seen corresponding path program 1 times [2022-01-10 06:45:54,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:45:54,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [61495795] [2022-01-10 06:45:54,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:45:54,565 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:45:54,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:45:54,566 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 06:45:54,568 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 06:45:54,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:45:54,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:45:54,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:45:54,811 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-10 06:45:54,812 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:45:54,812 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:45:54,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [61495795] [2022-01-10 06:45:54,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [61495795] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:45:54,812 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:45:54,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:45:54,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060427909] [2022-01-10 06:45:54,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:45:54,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:45:54,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:45:54,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:45:54,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:45:54,813 INFO L87 Difference]: Start difference. First operand 1107 states and 1505 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 06:45:54,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:45:54,982 INFO L93 Difference]: Finished difference Result 3101 states and 4309 transitions. [2022-01-10 06:45:54,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:45:54,982 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 113 [2022-01-10 06:45:54,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:45:54,989 INFO L225 Difference]: With dead ends: 3101 [2022-01-10 06:45:54,990 INFO L226 Difference]: Without dead ends: 2308 [2022-01-10 06:45:54,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:45:54,994 INFO L933 BasicCegarLoop]: 404 mSDtfsCounter, 403 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 1043 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:45:54,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [403 Valid, 1043 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:45:54,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2308 states. [2022-01-10 06:45:55,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2308 to 2036. [2022-01-10 06:45:55,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2036 states, 1547 states have (on average 1.3464770523594054) internal successors, (2083), 1558 states have internal predecessors, (2083), 337 states have call successors, (337), 151 states have call predecessors, (337), 151 states have return successors, (337), 326 states have call predecessors, (337), 337 states have call successors, (337) [2022-01-10 06:45:55,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2036 states to 2036 states and 2757 transitions. [2022-01-10 06:45:55,082 INFO L78 Accepts]: Start accepts. Automaton has 2036 states and 2757 transitions. Word has length 113 [2022-01-10 06:45:55,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:45:55,082 INFO L470 AbstractCegarLoop]: Abstraction has 2036 states and 2757 transitions. [2022-01-10 06:45:55,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 06:45:55,083 INFO L276 IsEmpty]: Start isEmpty. Operand 2036 states and 2757 transitions. [2022-01-10 06:45:55,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-01-10 06:45:55,084 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:45:55,084 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 06:45:55,097 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-01-10 06:45:55,291 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 06:45:55,291 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:45:55,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:45:55,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1939301986, now seen corresponding path program 1 times [2022-01-10 06:45:55,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:45:55,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1372468943] [2022-01-10 06:45:55,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:45:55,292 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:45:55,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:45:55,293 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 06:45:55,295 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 06:45:55,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:45:55,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:45:55,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:45:55,550 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 06:45:55,550 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:45:55,550 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:45:55,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1372468943] [2022-01-10 06:45:55,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1372468943] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:45:55,550 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:45:55,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 06:45:55,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671826449] [2022-01-10 06:45:55,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:45:55,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 06:45:55,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:45:55,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 06:45:55,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:45:55,551 INFO L87 Difference]: Start difference. First operand 2036 states and 2757 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-01-10 06:45:55,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:45:55,942 INFO L93 Difference]: Finished difference Result 5054 states and 7051 transitions. [2022-01-10 06:45:55,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 06:45:55,943 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 113 [2022-01-10 06:45:55,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:45:55,955 INFO L225 Difference]: With dead ends: 5054 [2022-01-10 06:45:55,955 INFO L226 Difference]: Without dead ends: 3319 [2022-01-10 06:45:55,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-01-10 06:45:55,960 INFO L933 BasicCegarLoop]: 635 mSDtfsCounter, 678 mSDsluCounter, 1747 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 2382 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:45:55,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [678 Valid, 2382 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:45:55,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3319 states. [2022-01-10 06:45:56,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3319 to 2130. [2022-01-10 06:45:56,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2130 states, 1612 states have (on average 1.3387096774193548) internal successors, (2158), 1624 states have internal predecessors, (2158), 354 states have call successors, (354), 163 states have call predecessors, (354), 163 states have return successors, (354), 342 states have call predecessors, (354), 354 states have call successors, (354) [2022-01-10 06:45:56,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2130 states to 2130 states and 2866 transitions. [2022-01-10 06:45:56,102 INFO L78 Accepts]: Start accepts. Automaton has 2130 states and 2866 transitions. Word has length 113 [2022-01-10 06:45:56,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:45:56,102 INFO L470 AbstractCegarLoop]: Abstraction has 2130 states and 2866 transitions. [2022-01-10 06:45:56,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-01-10 06:45:56,103 INFO L276 IsEmpty]: Start isEmpty. Operand 2130 states and 2866 transitions. [2022-01-10 06:45:56,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-10 06:45:56,105 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:45:56,105 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 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] [2022-01-10 06:45:56,114 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-01-10 06:45:56,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:45:56,312 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:45:56,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:45:56,312 INFO L85 PathProgramCache]: Analyzing trace with hash -875762813, now seen corresponding path program 1 times [2022-01-10 06:45:56,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:45:56,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2020881541] [2022-01-10 06:45:56,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:45:56,313 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:45:56,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:45:56,314 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:45:56,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-01-10 06:45:56,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:45:56,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:45:56,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:45:56,557 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-10 06:45:56,557 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:45:56,557 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:45:56,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2020881541] [2022-01-10 06:45:56,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2020881541] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:45:56,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:45:56,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 06:45:56,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783522477] [2022-01-10 06:45:56,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:45:56,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 06:45:56,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:45:56,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 06:45:56,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:45:56,559 INFO L87 Difference]: Start difference. First operand 2130 states and 2866 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-01-10 06:45:56,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:45:56,864 INFO L93 Difference]: Finished difference Result 4221 states and 5792 transitions. [2022-01-10 06:45:56,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 06:45:56,865 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 115 [2022-01-10 06:45:56,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:45:56,873 INFO L225 Difference]: With dead ends: 4221 [2022-01-10 06:45:56,873 INFO L226 Difference]: Without dead ends: 2421 [2022-01-10 06:45:56,876 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-01-10 06:45:56,877 INFO L933 BasicCegarLoop]: 555 mSDtfsCounter, 707 mSDsluCounter, 1491 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 707 SdHoareTripleChecker+Valid, 2046 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:45:56,877 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [707 Valid, 2046 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:45:56,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2421 states. [2022-01-10 06:45:56,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2421 to 1946. [2022-01-10 06:45:56,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1946 states, 1481 states have (on average 1.3308575286968265) internal successors, (1971), 1492 states have internal predecessors, (1971), 317 states have call successors, (317), 147 states have call predecessors, (317), 147 states have return successors, (317), 306 states have call predecessors, (317), 317 states have call successors, (317) [2022-01-10 06:45:56,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1946 states to 1946 states and 2605 transitions. [2022-01-10 06:45:56,977 INFO L78 Accepts]: Start accepts. Automaton has 1946 states and 2605 transitions. Word has length 115 [2022-01-10 06:45:56,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:45:56,977 INFO L470 AbstractCegarLoop]: Abstraction has 1946 states and 2605 transitions. [2022-01-10 06:45:56,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-01-10 06:45:56,977 INFO L276 IsEmpty]: Start isEmpty. Operand 1946 states and 2605 transitions. [2022-01-10 06:45:56,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-10 06:45:56,979 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:45:56,979 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 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] [2022-01-10 06:45:56,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-01-10 06:45:57,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:45:57,186 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:45:57,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:45:57,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1011206919, now seen corresponding path program 1 times [2022-01-10 06:45:57,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:45:57,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [139571434] [2022-01-10 06:45:57,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:45:57,187 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:45:57,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:45:57,188 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:45:57,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-01-10 06:45:57,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:45:57,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:45:57,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:45:57,386 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-01-10 06:45:57,386 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:45:57,386 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:45:57,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [139571434] [2022-01-10 06:45:57,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [139571434] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:45:57,386 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:45:57,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:45:57,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988280871] [2022-01-10 06:45:57,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:45:57,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:45:57,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:45:57,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:45:57,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:45:57,388 INFO L87 Difference]: Start difference. First operand 1946 states and 2605 transitions. Second operand has 5 states, 4 states have (on average 21.75) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2022-01-10 06:45:57,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:45:57,464 INFO L93 Difference]: Finished difference Result 3006 states and 4051 transitions. [2022-01-10 06:45:57,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:45:57,464 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 21.75) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) Word has length 115 [2022-01-10 06:45:57,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:45:57,471 INFO L225 Difference]: With dead ends: 3006 [2022-01-10 06:45:57,471 INFO L226 Difference]: Without dead ends: 1776 [2022-01-10 06:45:57,473 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:45:57,473 INFO L933 BasicCegarLoop]: 284 mSDtfsCounter, 2 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:45:57,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1122 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:45:57,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1776 states. [2022-01-10 06:45:57,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1776 to 1776. [2022-01-10 06:45:57,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1776 states, 1351 states have (on average 1.3330866025166543) internal successors, (1801), 1361 states have internal predecessors, (1801), 290 states have call successors, (290), 134 states have call predecessors, (290), 134 states have return successors, (290), 280 states have call predecessors, (290), 290 states have call successors, (290) [2022-01-10 06:45:57,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1776 states to 1776 states and 2381 transitions. [2022-01-10 06:45:57,561 INFO L78 Accepts]: Start accepts. Automaton has 1776 states and 2381 transitions. Word has length 115 [2022-01-10 06:45:57,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:45:57,561 INFO L470 AbstractCegarLoop]: Abstraction has 1776 states and 2381 transitions. [2022-01-10 06:45:57,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 21.75) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2022-01-10 06:45:57,562 INFO L276 IsEmpty]: Start isEmpty. Operand 1776 states and 2381 transitions. [2022-01-10 06:45:57,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-10 06:45:57,563 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:45:57,563 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 06:45:57,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-01-10 06:45:57,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:45:57,770 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:45:57,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:45:57,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1926273345, now seen corresponding path program 1 times [2022-01-10 06:45:57,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:45:57,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1481784149] [2022-01-10 06:45:57,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:45:57,771 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:45:57,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:45:57,772 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:45:57,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-01-10 06:45:57,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:45:57,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:45:57,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:45:58,022 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-10 06:45:58,022 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:45:58,022 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:45:58,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1481784149] [2022-01-10 06:45:58,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1481784149] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:45:58,023 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:45:58,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:45:58,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208925073] [2022-01-10 06:45:58,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:45:58,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:45:58,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:45:58,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:45:58,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:45:58,024 INFO L87 Difference]: Start difference. First operand 1776 states and 2381 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 06:45:58,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:45:58,218 INFO L93 Difference]: Finished difference Result 4249 states and 5770 transitions. [2022-01-10 06:45:58,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:45:58,219 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 115 [2022-01-10 06:45:58,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:45:58,229 INFO L225 Difference]: With dead ends: 4249 [2022-01-10 06:45:58,229 INFO L226 Difference]: Without dead ends: 3032 [2022-01-10 06:45:58,233 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:45:58,233 INFO L933 BasicCegarLoop]: 499 mSDtfsCounter, 446 mSDsluCounter, 731 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 1230 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:45:58,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [446 Valid, 1230 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:45:58,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3032 states. [2022-01-10 06:45:58,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3032 to 2705. [2022-01-10 06:45:58,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2705 states, 2041 states have (on average 1.3272905438510534) internal successors, (2709), 2057 states have internal predecessors, (2709), 454 states have call successors, (454), 209 states have call predecessors, (454), 209 states have return successors, (454), 438 states have call predecessors, (454), 454 states have call successors, (454) [2022-01-10 06:45:58,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2705 states to 2705 states and 3617 transitions. [2022-01-10 06:45:58,357 INFO L78 Accepts]: Start accepts. Automaton has 2705 states and 3617 transitions. Word has length 115 [2022-01-10 06:45:58,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:45:58,358 INFO L470 AbstractCegarLoop]: Abstraction has 2705 states and 3617 transitions. [2022-01-10 06:45:58,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 06:45:58,358 INFO L276 IsEmpty]: Start isEmpty. Operand 2705 states and 3617 transitions. [2022-01-10 06:45:58,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-10 06:45:58,359 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:45:58,360 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 06:45:58,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-01-10 06:45:58,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:45:58,579 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:45:58,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:45:58,580 INFO L85 PathProgramCache]: Analyzing trace with hash -359185766, now seen corresponding path program 1 times [2022-01-10 06:45:58,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:45:58,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [864877000] [2022-01-10 06:45:58,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:45:58,580 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:45:58,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:45:58,581 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:45:58,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-01-10 06:45:58,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:45:58,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:45:58,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:45:58,835 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-10 06:45:58,835 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:45:58,835 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:45:58,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [864877000] [2022-01-10 06:45:58,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [864877000] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:45:58,836 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:45:58,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:45:58,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72403809] [2022-01-10 06:45:58,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:45:58,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:45:58,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:45:58,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:45:58,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:45:58,837 INFO L87 Difference]: Start difference. First operand 2705 states and 3617 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 06:45:59,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:45:59,094 INFO L93 Difference]: Finished difference Result 4595 states and 6154 transitions. [2022-01-10 06:45:59,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:45:59,094 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 115 [2022-01-10 06:45:59,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:45:59,102 INFO L225 Difference]: With dead ends: 4595 [2022-01-10 06:45:59,102 INFO L226 Difference]: Without dead ends: 2239 [2022-01-10 06:45:59,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 111 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 06:45:59,107 INFO L933 BasicCegarLoop]: 307 mSDtfsCounter, 765 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:45:59,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [765 Valid, 837 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:45:59,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2239 states. [2022-01-10 06:45:59,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2239 to 2232. [2022-01-10 06:45:59,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2232 states, 1685 states have (on average 1.3258160237388723) internal successors, (2234), 1698 states have internal predecessors, (2234), 370 states have call successors, (370), 176 states have call predecessors, (370), 176 states have return successors, (370), 357 states have call predecessors, (370), 370 states have call successors, (370) [2022-01-10 06:45:59,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2232 states to 2232 states and 2974 transitions. [2022-01-10 06:45:59,206 INFO L78 Accepts]: Start accepts. Automaton has 2232 states and 2974 transitions. Word has length 115 [2022-01-10 06:45:59,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:45:59,207 INFO L470 AbstractCegarLoop]: Abstraction has 2232 states and 2974 transitions. [2022-01-10 06:45:59,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 06:45:59,207 INFO L276 IsEmpty]: Start isEmpty. Operand 2232 states and 2974 transitions. [2022-01-10 06:45:59,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-01-10 06:45:59,208 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:45:59,208 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 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] [2022-01-10 06:45:59,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-01-10 06:45:59,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:45:59,415 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:45:59,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:45:59,415 INFO L85 PathProgramCache]: Analyzing trace with hash -335293013, now seen corresponding path program 1 times [2022-01-10 06:45:59,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:45:59,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1027086189] [2022-01-10 06:45:59,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:45:59,416 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:45:59,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:45:59,417 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:45:59,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-01-10 06:45:59,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:45:59,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:45:59,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:45:59,692 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-01-10 06:45:59,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:45:59,881 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-01-10 06:45:59,882 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:45:59,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1027086189] [2022-01-10 06:45:59,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1027086189] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-10 06:45:59,882 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 06:45:59,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 8 [2022-01-10 06:45:59,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733005358] [2022-01-10 06:45:59,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:45:59,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 06:45:59,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:45:59,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 06:45:59,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:45:59,883 INFO L87 Difference]: Start difference. First operand 2232 states and 2974 transitions. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 06:46:00,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:46:00,105 INFO L93 Difference]: Finished difference Result 4528 states and 6144 transitions. [2022-01-10 06:46:00,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 06:46:00,106 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 116 [2022-01-10 06:46:00,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:46:00,124 INFO L225 Difference]: With dead ends: 4528 [2022-01-10 06:46:00,125 INFO L226 Difference]: Without dead ends: 2766 [2022-01-10 06:46:00,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 224 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-01-10 06:46:00,132 INFO L933 BasicCegarLoop]: 514 mSDtfsCounter, 332 mSDsluCounter, 2186 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 2700 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:46:00,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [346 Valid, 2700 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:46:00,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2766 states. [2022-01-10 06:46:00,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2766 to 2232. [2022-01-10 06:46:00,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2232 states, 1685 states have (on average 1.3228486646884272) internal successors, (2229), 1698 states have internal predecessors, (2229), 370 states have call successors, (370), 176 states have call predecessors, (370), 176 states have return successors, (370), 357 states have call predecessors, (370), 370 states have call successors, (370) [2022-01-10 06:46:00,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2232 states to 2232 states and 2969 transitions. [2022-01-10 06:46:00,247 INFO L78 Accepts]: Start accepts. Automaton has 2232 states and 2969 transitions. Word has length 116 [2022-01-10 06:46:00,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:46:00,248 INFO L470 AbstractCegarLoop]: Abstraction has 2232 states and 2969 transitions. [2022-01-10 06:46:00,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 06:46:00,248 INFO L276 IsEmpty]: Start isEmpty. Operand 2232 states and 2969 transitions. [2022-01-10 06:46:00,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-01-10 06:46:00,250 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:46:00,250 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 06:46:00,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-01-10 06:46:00,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:46:00,456 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:46:00,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:46:00,457 INFO L85 PathProgramCache]: Analyzing trace with hash -962766154, now seen corresponding path program 1 times [2022-01-10 06:46:00,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:46:00,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1181226514] [2022-01-10 06:46:00,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:46:00,457 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:46:00,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:46:00,458 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:46:00,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-01-10 06:46:00,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:46:00,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:46:00,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:46:00,739 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-10 06:46:00,740 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:46:00,740 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:46:00,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1181226514] [2022-01-10 06:46:00,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1181226514] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:46:00,740 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:46:00,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:46:00,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266487002] [2022-01-10 06:46:00,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:46:00,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:46:00,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:46:00,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:46:00,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:46:00,741 INFO L87 Difference]: Start difference. First operand 2232 states and 2969 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 06:46:01,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:46:01,009 INFO L93 Difference]: Finished difference Result 4000 states and 5347 transitions. [2022-01-10 06:46:01,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:46:01,011 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 118 [2022-01-10 06:46:01,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:46:01,022 INFO L225 Difference]: With dead ends: 4000 [2022-01-10 06:46:01,022 INFO L226 Difference]: Without dead ends: 1974 [2022-01-10 06:46:01,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 114 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 06:46:01,026 INFO L933 BasicCegarLoop]: 258 mSDtfsCounter, 709 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:46:01,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [709 Valid, 714 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:46:01,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1974 states. [2022-01-10 06:46:01,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1974 to 1915. [2022-01-10 06:46:01,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1915 states, 1446 states have (on average 1.3236514522821576) internal successors, (1914), 1457 states have internal predecessors, (1914), 316 states have call successors, (316), 152 states have call predecessors, (316), 152 states have return successors, (316), 305 states have call predecessors, (316), 316 states have call successors, (316) [2022-01-10 06:46:01,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1915 states to 1915 states and 2546 transitions. [2022-01-10 06:46:01,102 INFO L78 Accepts]: Start accepts. Automaton has 1915 states and 2546 transitions. Word has length 118 [2022-01-10 06:46:01,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:46:01,102 INFO L470 AbstractCegarLoop]: Abstraction has 1915 states and 2546 transitions. [2022-01-10 06:46:01,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 06:46:01,102 INFO L276 IsEmpty]: Start isEmpty. Operand 1915 states and 2546 transitions. [2022-01-10 06:46:01,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-01-10 06:46:01,103 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:46:01,103 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2022-01-10 06:46:01,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-01-10 06:46:01,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:46:01,309 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:46:01,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:46:01,310 INFO L85 PathProgramCache]: Analyzing trace with hash 179977826, now seen corresponding path program 1 times [2022-01-10 06:46:01,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:46:01,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [331287702] [2022-01-10 06:46:01,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:46:01,310 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:46:01,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:46:01,311 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:46:01,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-01-10 06:46:01,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:46:01,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:46:01,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:46:01,572 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 06:46:01,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:46:01,793 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-01-10 06:46:01,793 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:46:01,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [331287702] [2022-01-10 06:46:01,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [331287702] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-10 06:46:01,793 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 06:46:01,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 8 [2022-01-10 06:46:01,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801330089] [2022-01-10 06:46:01,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:46:01,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 06:46:01,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:46:01,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 06:46:01,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:46:01,794 INFO L87 Difference]: Start difference. First operand 1915 states and 2546 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 6 states have internal predecessors, (90), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2022-01-10 06:46:02,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:46:02,037 INFO L93 Difference]: Finished difference Result 4237 states and 5788 transitions. [2022-01-10 06:46:02,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 06:46:02,037 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 6 states have internal predecessors, (90), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 119 [2022-01-10 06:46:02,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:46:02,043 INFO L225 Difference]: With dead ends: 4237 [2022-01-10 06:46:02,044 INFO L226 Difference]: Without dead ends: 2522 [2022-01-10 06:46:02,046 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 230 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-01-10 06:46:02,047 INFO L933 BasicCegarLoop]: 368 mSDtfsCounter, 338 mSDsluCounter, 1616 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 1984 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:46:02,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [353 Valid, 1984 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:46:02,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2522 states. [2022-01-10 06:46:02,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2522 to 1881. [2022-01-10 06:46:02,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1881 states, 1422 states have (on average 1.319971870604782) internal successors, (1877), 1433 states have internal predecessors, (1877), 307 states have call successors, (307), 151 states have call predecessors, (307), 151 states have return successors, (307), 296 states have call predecessors, (307), 307 states have call successors, (307) [2022-01-10 06:46:02,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1881 states to 1881 states and 2491 transitions. [2022-01-10 06:46:02,136 INFO L78 Accepts]: Start accepts. Automaton has 1881 states and 2491 transitions. Word has length 119 [2022-01-10 06:46:02,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:46:02,137 INFO L470 AbstractCegarLoop]: Abstraction has 1881 states and 2491 transitions. [2022-01-10 06:46:02,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 6 states have internal predecessors, (90), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2022-01-10 06:46:02,137 INFO L276 IsEmpty]: Start isEmpty. Operand 1881 states and 2491 transitions. [2022-01-10 06:46:02,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 06:46:02,138 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:46:02,138 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 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] [2022-01-10 06:46:02,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-01-10 06:46:02,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:46:02,344 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:46:02,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:46:02,345 INFO L85 PathProgramCache]: Analyzing trace with hash 2092818843, now seen corresponding path program 1 times [2022-01-10 06:46:02,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:46:02,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [822949606] [2022-01-10 06:46:02,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:46:02,345 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:46:02,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:46:02,346 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:46:02,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-01-10 06:46:02,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:46:02,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:46:02,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:46:02,550 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-01-10 06:46:02,550 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:46:02,550 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:46:02,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [822949606] [2022-01-10 06:46:02,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [822949606] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:46:02,551 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:46:02,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:46:02,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112674868] [2022-01-10 06:46:02,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:46:02,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:46:02,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:46:02,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:46:02,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:46:02,553 INFO L87 Difference]: Start difference. First operand 1881 states and 2491 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-01-10 06:46:02,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:46:02,623 INFO L93 Difference]: Finished difference Result 3596 states and 4803 transitions. [2022-01-10 06:46:02,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:46:02,629 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 124 [2022-01-10 06:46:02,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:46:02,633 INFO L225 Difference]: With dead ends: 3596 [2022-01-10 06:46:02,633 INFO L226 Difference]: Without dead ends: 1977 [2022-01-10 06:46:02,636 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:46:02,637 INFO L933 BasicCegarLoop]: 283 mSDtfsCounter, 8 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 840 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:46:02,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 840 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:46:02,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1977 states. [2022-01-10 06:46:02,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1977 to 1953. [2022-01-10 06:46:02,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1953 states, 1482 states have (on average 1.3070175438596492) internal successors, (1937), 1493 states have internal predecessors, (1937), 307 states have call successors, (307), 163 states have call predecessors, (307), 163 states have return successors, (307), 296 states have call predecessors, (307), 307 states have call successors, (307) [2022-01-10 06:46:02,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1953 states to 1953 states and 2551 transitions. [2022-01-10 06:46:02,717 INFO L78 Accepts]: Start accepts. Automaton has 1953 states and 2551 transitions. Word has length 124 [2022-01-10 06:46:02,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:46:02,718 INFO L470 AbstractCegarLoop]: Abstraction has 1953 states and 2551 transitions. [2022-01-10 06:46:02,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-01-10 06:46:02,718 INFO L276 IsEmpty]: Start isEmpty. Operand 1953 states and 2551 transitions. [2022-01-10 06:46:02,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 06:46:02,719 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:46:02,719 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 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] [2022-01-10 06:46:02,737 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-01-10 06:46:02,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:46:02,925 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:46:02,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:46:02,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1561824280, now seen corresponding path program 1 times [2022-01-10 06:46:02,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:46:02,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1835785566] [2022-01-10 06:46:02,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:46:02,926 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:46:02,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:46:02,927 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:46:02,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-01-10 06:46:03,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:46:03,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:46:03,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:46:03,228 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-10 06:46:03,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:46:03,418 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-01-10 06:46:03,418 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:46:03,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1835785566] [2022-01-10 06:46:03,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1835785566] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-10 06:46:03,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 06:46:03,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 8 [2022-01-10 06:46:03,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253141867] [2022-01-10 06:46:03,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:46:03,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 06:46:03,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:46:03,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 06:46:03,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:46:03,419 INFO L87 Difference]: Start difference. First operand 1953 states and 2551 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 6 states have internal predecessors, (90), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2022-01-10 06:46:03,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:46:03,619 INFO L93 Difference]: Finished difference Result 4124 states and 5515 transitions. [2022-01-10 06:46:03,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 06:46:03,619 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 6 states have internal predecessors, (90), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 127 [2022-01-10 06:46:03,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:46:03,624 INFO L225 Difference]: With dead ends: 4124 [2022-01-10 06:46:03,624 INFO L226 Difference]: Without dead ends: 2397 [2022-01-10 06:46:03,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 246 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-01-10 06:46:03,627 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 373 mSDsluCounter, 1629 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 1994 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:46:03,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [385 Valid, 1994 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:46:03,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2397 states. [2022-01-10 06:46:03,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2397 to 1932. [2022-01-10 06:46:03,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1932 states, 1467 states have (on average 1.3033401499659167) internal successors, (1912), 1478 states have internal predecessors, (1912), 301 states have call successors, (301), 163 states have call predecessors, (301), 163 states have return successors, (301), 290 states have call predecessors, (301), 301 states have call successors, (301) [2022-01-10 06:46:03,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1932 states to 1932 states and 2514 transitions. [2022-01-10 06:46:03,720 INFO L78 Accepts]: Start accepts. Automaton has 1932 states and 2514 transitions. Word has length 127 [2022-01-10 06:46:03,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:46:03,721 INFO L470 AbstractCegarLoop]: Abstraction has 1932 states and 2514 transitions. [2022-01-10 06:46:03,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 6 states have internal predecessors, (90), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2022-01-10 06:46:03,721 INFO L276 IsEmpty]: Start isEmpty. Operand 1932 states and 2514 transitions. [2022-01-10 06:46:03,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-01-10 06:46:03,722 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:46:03,722 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 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] [2022-01-10 06:46:03,737 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-01-10 06:46:03,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:46:03,936 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:46:03,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:46:03,936 INFO L85 PathProgramCache]: Analyzing trace with hash 761369488, now seen corresponding path program 1 times [2022-01-10 06:46:03,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:46:03,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [377504840] [2022-01-10 06:46:03,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:46:03,936 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:46:03,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:46:03,937 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:46:03,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-01-10 06:46:04,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:46:04,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 06:46:04,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:46:04,156 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-01-10 06:46:04,156 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:46:04,156 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:46:04,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [377504840] [2022-01-10 06:46:04,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [377504840] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:46:04,156 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:46:04,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 06:46:04,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320733864] [2022-01-10 06:46:04,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:46:04,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 06:46:04,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:46:04,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 06:46:04,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:46:04,158 INFO L87 Difference]: Start difference. First operand 1932 states and 2514 transitions. Second operand has 6 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-01-10 06:46:04,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:46:04,291 INFO L93 Difference]: Finished difference Result 2786 states and 3825 transitions. [2022-01-10 06:46:04,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 06:46:04,291 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 130 [2022-01-10 06:46:04,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:46:04,297 INFO L225 Difference]: With dead ends: 2786 [2022-01-10 06:46:04,297 INFO L226 Difference]: Without dead ends: 2784 [2022-01-10 06:46:04,297 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:46:04,298 INFO L933 BasicCegarLoop]: 427 mSDtfsCounter, 260 mSDsluCounter, 1503 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 1930 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:46:04,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [282 Valid, 1930 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:46:04,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2784 states. [2022-01-10 06:46:04,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2784 to 1927. [2022-01-10 06:46:04,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1927 states, 1460 states have (on average 1.3047945205479452) internal successors, (1905), 1472 states have internal predecessors, (1905), 302 states have call successors, (302), 164 states have call predecessors, (302), 164 states have return successors, (302), 290 states have call predecessors, (302), 302 states have call successors, (302) [2022-01-10 06:46:04,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1927 states to 1927 states and 2509 transitions. [2022-01-10 06:46:04,402 INFO L78 Accepts]: Start accepts. Automaton has 1927 states and 2509 transitions. Word has length 130 [2022-01-10 06:46:04,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:46:04,407 INFO L470 AbstractCegarLoop]: Abstraction has 1927 states and 2509 transitions. [2022-01-10 06:46:04,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-01-10 06:46:04,407 INFO L276 IsEmpty]: Start isEmpty. Operand 1927 states and 2509 transitions. [2022-01-10 06:46:04,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-01-10 06:46:04,408 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:46:04,408 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 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] [2022-01-10 06:46:04,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-01-10 06:46:04,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:46:04,615 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:46:04,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:46:04,615 INFO L85 PathProgramCache]: Analyzing trace with hash 213958265, now seen corresponding path program 1 times [2022-01-10 06:46:04,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:46:04,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1433258327] [2022-01-10 06:46:04,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:46:04,616 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:46:04,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:46:04,617 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:46:04,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-01-10 06:46:04,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:46:04,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:46:04,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:46:04,913 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-10 06:46:04,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:46:05,157 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-01-10 06:46:05,157 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:46:05,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1433258327] [2022-01-10 06:46:05,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1433258327] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-10 06:46:05,157 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 06:46:05,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2022-01-10 06:46:05,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669687408] [2022-01-10 06:46:05,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:46:05,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 06:46:05,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:46:05,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 06:46:05,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-01-10 06:46:05,158 INFO L87 Difference]: Start difference. First operand 1927 states and 2509 transitions. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 6 states have internal predecessors, (97), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 06:46:05,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:46:05,353 INFO L93 Difference]: Finished difference Result 3877 states and 5154 transitions. [2022-01-10 06:46:05,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 06:46:05,353 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 6 states have internal predecessors, (97), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 133 [2022-01-10 06:46:05,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:46:05,357 INFO L225 Difference]: With dead ends: 3877 [2022-01-10 06:46:05,358 INFO L226 Difference]: Without dead ends: 2215 [2022-01-10 06:46:05,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-01-10 06:46:05,361 INFO L933 BasicCegarLoop]: 355 mSDtfsCounter, 415 mSDsluCounter, 1612 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 1967 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:46:05,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [418 Valid, 1967 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:46:05,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2215 states. [2022-01-10 06:46:05,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2215 to 1725. [2022-01-10 06:46:05,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1725 states, 1316 states have (on average 1.297112462006079) internal successors, (1707), 1327 states have internal predecessors, (1707), 264 states have call successors, (264), 144 states have call predecessors, (264), 144 states have return successors, (264), 253 states have call predecessors, (264), 264 states have call successors, (264) [2022-01-10 06:46:05,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1725 states to 1725 states and 2235 transitions. [2022-01-10 06:46:05,452 INFO L78 Accepts]: Start accepts. Automaton has 1725 states and 2235 transitions. Word has length 133 [2022-01-10 06:46:05,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:46:05,452 INFO L470 AbstractCegarLoop]: Abstraction has 1725 states and 2235 transitions. [2022-01-10 06:46:05,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 6 states have internal predecessors, (97), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 06:46:05,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1725 states and 2235 transitions. [2022-01-10 06:46:05,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-01-10 06:46:05,455 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:46:05,455 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2022-01-10 06:46:05,466 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-01-10 06:46:05,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:46:05,656 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:46:05,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:46:05,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1899702560, now seen corresponding path program 1 times [2022-01-10 06:46:05,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:46:05,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1805689204] [2022-01-10 06:46:05,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:46:05,657 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:46:05,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:46:05,658 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:46:05,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-01-10 06:46:05,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:46:05,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-10 06:46:05,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:46:06,411 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 75 proven. 17 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-01-10 06:46:06,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:46:06,795 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-01-10 06:46:06,796 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:46:06,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1805689204] [2022-01-10 06:46:06,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1805689204] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:46:06,796 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:46:06,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2022-01-10 06:46:06,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023749997] [2022-01-10 06:46:06,796 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:46:06,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-10 06:46:06,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:46:06,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-10 06:46:06,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-01-10 06:46:06,797 INFO L87 Difference]: Start difference. First operand 1725 states and 2235 transitions. Second operand has 18 states, 18 states have (on average 14.722222222222221) internal successors, (265), 18 states have internal predecessors, (265), 7 states have call successors, (35), 5 states have call predecessors, (35), 5 states have return successors, (34), 7 states have call predecessors, (34), 7 states have call successors, (34) [2022-01-10 06:46:09,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:46:09,337 INFO L93 Difference]: Finished difference Result 4872 states and 6617 transitions. [2022-01-10 06:46:09,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-10 06:46:09,338 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 14.722222222222221) internal successors, (265), 18 states have internal predecessors, (265), 7 states have call successors, (35), 5 states have call predecessors, (35), 5 states have return successors, (34), 7 states have call predecessors, (34), 7 states have call successors, (34) Word has length 209 [2022-01-10 06:46:09,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:46:09,345 INFO L225 Difference]: With dead ends: 4872 [2022-01-10 06:46:09,345 INFO L226 Difference]: Without dead ends: 3420 [2022-01-10 06:46:09,349 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 401 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1121 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=820, Invalid=3470, Unknown=0, NotChecked=0, Total=4290 [2022-01-10 06:46:09,349 INFO L933 BasicCegarLoop]: 439 mSDtfsCounter, 4307 mSDsluCounter, 3151 mSDsCounter, 0 mSdLazyCounter, 2451 mSolverCounterSat, 1577 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4307 SdHoareTripleChecker+Valid, 3590 SdHoareTripleChecker+Invalid, 4028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1577 IncrementalHoareTripleChecker+Valid, 2451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-10 06:46:09,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4307 Valid, 3590 Invalid, 4028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1577 Valid, 2451 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-10 06:46:09,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3420 states. [2022-01-10 06:46:09,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3420 to 2314. [2022-01-10 06:46:09,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2314 states, 1759 states have (on average 1.290505969300739) internal successors, (2270), 1773 states have internal predecessors, (2270), 354 states have call successors, (354), 200 states have call predecessors, (354), 200 states have return successors, (354), 340 states have call predecessors, (354), 354 states have call successors, (354) [2022-01-10 06:46:09,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2314 states to 2314 states and 2978 transitions. [2022-01-10 06:46:09,498 INFO L78 Accepts]: Start accepts. Automaton has 2314 states and 2978 transitions. Word has length 209 [2022-01-10 06:46:09,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:46:09,498 INFO L470 AbstractCegarLoop]: Abstraction has 2314 states and 2978 transitions. [2022-01-10 06:46:09,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 14.722222222222221) internal successors, (265), 18 states have internal predecessors, (265), 7 states have call successors, (35), 5 states have call predecessors, (35), 5 states have return successors, (34), 7 states have call predecessors, (34), 7 states have call successors, (34) [2022-01-10 06:46:09,498 INFO L276 IsEmpty]: Start isEmpty. Operand 2314 states and 2978 transitions. [2022-01-10 06:46:09,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-01-10 06:46:09,501 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:46:09,502 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:46:09,517 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-01-10 06:46:09,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:46:09,709 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:46:09,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:46:09,709 INFO L85 PathProgramCache]: Analyzing trace with hash -621400794, now seen corresponding path program 1 times [2022-01-10 06:46:09,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:46:09,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [781140288] [2022-01-10 06:46:09,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:46:09,710 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:46:09,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:46:09,711 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:46:09,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-01-10 06:46:09,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:46:09,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-10 06:46:09,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:46:10,362 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 79 proven. 27 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-01-10 06:46:10,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:46:10,703 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 26 proven. 19 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-01-10 06:46:10,703 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:46:10,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [781140288] [2022-01-10 06:46:10,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [781140288] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:46:10,704 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:46:10,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2022-01-10 06:46:10,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244085816] [2022-01-10 06:46:10,704 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:46:10,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-10 06:46:10,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:46:10,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-10 06:46:10,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-01-10 06:46:10,705 INFO L87 Difference]: Start difference. First operand 2314 states and 2978 transitions. Second operand has 18 states, 18 states have (on average 15.277777777777779) internal successors, (275), 18 states have internal predecessors, (275), 7 states have call successors, (35), 5 states have call predecessors, (35), 5 states have return successors, (34), 7 states have call predecessors, (34), 7 states have call successors, (34) [2022-01-10 06:46:13,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:46:13,774 INFO L93 Difference]: Finished difference Result 6643 states and 8954 transitions. [2022-01-10 06:46:13,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-10 06:46:13,775 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 15.277777777777779) internal successors, (275), 18 states have internal predecessors, (275), 7 states have call successors, (35), 5 states have call predecessors, (35), 5 states have return successors, (34), 7 states have call predecessors, (34), 7 states have call successors, (34) Word has length 210 [2022-01-10 06:46:13,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:46:13,784 INFO L225 Difference]: With dead ends: 6643 [2022-01-10 06:46:13,784 INFO L226 Difference]: Without dead ends: 4686 [2022-01-10 06:46:13,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 405 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1095 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=787, Invalid=3503, Unknown=0, NotChecked=0, Total=4290 [2022-01-10 06:46:13,788 INFO L933 BasicCegarLoop]: 640 mSDtfsCounter, 2482 mSDsluCounter, 4363 mSDsCounter, 0 mSdLazyCounter, 3422 mSolverCounterSat, 1244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2482 SdHoareTripleChecker+Valid, 5003 SdHoareTripleChecker+Invalid, 4666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1244 IncrementalHoareTripleChecker+Valid, 3422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:46:13,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2482 Valid, 5003 Invalid, 4666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1244 Valid, 3422 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-01-10 06:46:13,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4686 states. [2022-01-10 06:46:14,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4686 to 3282. [2022-01-10 06:46:14,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3282 states, 2503 states have (on average 1.2836596084698362) internal successors, (3213), 2523 states have internal predecessors, (3213), 492 states have call successors, (492), 286 states have call predecessors, (492), 286 states have return successors, (492), 472 states have call predecessors, (492), 492 states have call successors, (492) [2022-01-10 06:46:14,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3282 states to 3282 states and 4197 transitions. [2022-01-10 06:46:14,036 INFO L78 Accepts]: Start accepts. Automaton has 3282 states and 4197 transitions. Word has length 210 [2022-01-10 06:46:14,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:46:14,037 INFO L470 AbstractCegarLoop]: Abstraction has 3282 states and 4197 transitions. [2022-01-10 06:46:14,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 15.277777777777779) internal successors, (275), 18 states have internal predecessors, (275), 7 states have call successors, (35), 5 states have call predecessors, (35), 5 states have return successors, (34), 7 states have call predecessors, (34), 7 states have call successors, (34) [2022-01-10 06:46:14,037 INFO L276 IsEmpty]: Start isEmpty. Operand 3282 states and 4197 transitions. [2022-01-10 06:46:14,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2022-01-10 06:46:14,041 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:46:14,041 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2022-01-10 06:46:14,050 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-01-10 06:46:14,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:46:14,248 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:46:14,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:46:14,249 INFO L85 PathProgramCache]: Analyzing trace with hash 182578789, now seen corresponding path program 1 times [2022-01-10 06:46:14,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:46:14,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [842924398] [2022-01-10 06:46:14,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:46:14,249 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:46:14,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:46:14,250 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:46:14,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-01-10 06:46:14,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:46:14,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 06:46:14,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:46:14,689 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 64 proven. 28 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-01-10 06:46:14,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:46:15,034 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 15 proven. 16 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-01-10 06:46:15,035 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:46:15,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [842924398] [2022-01-10 06:46:15,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [842924398] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:46:15,035 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:46:15,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2022-01-10 06:46:15,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037108303] [2022-01-10 06:46:15,035 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:46:15,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-10 06:46:15,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:46:15,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-10 06:46:15,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-01-10 06:46:15,036 INFO L87 Difference]: Start difference. First operand 3282 states and 4197 transitions. Second operand has 12 states, 12 states have (on average 24.0) internal successors, (288), 12 states have internal predecessors, (288), 7 states have call successors, (35), 5 states have call predecessors, (35), 5 states have return successors, (34), 7 states have call predecessors, (34), 7 states have call successors, (34) [2022-01-10 06:46:16,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:46:16,408 INFO L93 Difference]: Finished difference Result 9289 states and 12747 transitions. [2022-01-10 06:46:16,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-10 06:46:16,408 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 24.0) internal successors, (288), 12 states have internal predecessors, (288), 7 states have call successors, (35), 5 states have call predecessors, (35), 5 states have return successors, (34), 7 states have call predecessors, (34), 7 states have call successors, (34) Word has length 211 [2022-01-10 06:46:16,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:46:16,420 INFO L225 Difference]: With dead ends: 9289 [2022-01-10 06:46:16,420 INFO L226 Difference]: Without dead ends: 6506 [2022-01-10 06:46:16,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 412 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=251, Invalid=619, Unknown=0, NotChecked=0, Total=870 [2022-01-10 06:46:16,425 INFO L933 BasicCegarLoop]: 412 mSDtfsCounter, 1828 mSDsluCounter, 2140 mSDsCounter, 0 mSdLazyCounter, 978 mSolverCounterSat, 672 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1828 SdHoareTripleChecker+Valid, 2552 SdHoareTripleChecker+Invalid, 1650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 672 IncrementalHoareTripleChecker+Valid, 978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 06:46:16,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1828 Valid, 2552 Invalid, 1650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [672 Valid, 978 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 06:46:16,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6506 states. [2022-01-10 06:46:16,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6506 to 3568. [2022-01-10 06:46:16,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3568 states, 2761 states have (on average 1.2846794639623325) internal successors, (3547), 2781 states have internal predecessors, (3547), 506 states have call successors, (506), 300 states have call predecessors, (506), 300 states have return successors, (506), 486 states have call predecessors, (506), 506 states have call successors, (506) [2022-01-10 06:46:16,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3568 states to 3568 states and 4559 transitions. [2022-01-10 06:46:16,666 INFO L78 Accepts]: Start accepts. Automaton has 3568 states and 4559 transitions. Word has length 211 [2022-01-10 06:46:16,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:46:16,667 INFO L470 AbstractCegarLoop]: Abstraction has 3568 states and 4559 transitions. [2022-01-10 06:46:16,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 24.0) internal successors, (288), 12 states have internal predecessors, (288), 7 states have call successors, (35), 5 states have call predecessors, (35), 5 states have return successors, (34), 7 states have call predecessors, (34), 7 states have call successors, (34) [2022-01-10 06:46:16,667 INFO L276 IsEmpty]: Start isEmpty. Operand 3568 states and 4559 transitions. [2022-01-10 06:46:16,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-01-10 06:46:16,671 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:46:16,672 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2022-01-10 06:46:16,685 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-01-10 06:46:16,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:46:16,880 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:46:16,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:46:16,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1364374132, now seen corresponding path program 1 times [2022-01-10 06:46:16,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:46:16,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [460734343] [2022-01-10 06:46:16,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:46:16,881 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:46:16,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:46:16,882 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:46:16,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-01-10 06:46:17,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:46:17,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:46:17,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:46:17,287 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 80 proven. 13 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-01-10 06:46:17,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:46:17,599 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 27 proven. 5 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-01-10 06:46:17,599 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:46:17,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [460734343] [2022-01-10 06:46:17,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [460734343] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:46:17,600 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:46:17,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-01-10 06:46:17,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741682673] [2022-01-10 06:46:17,600 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:46:17,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-10 06:46:17,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:46:17,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-10 06:46:17,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-01-10 06:46:17,601 INFO L87 Difference]: Start difference. First operand 3568 states and 4559 transitions. Second operand has 12 states, 12 states have (on average 21.083333333333332) internal successors, (253), 12 states have internal predecessors, (253), 6 states have call successors, (34), 4 states have call predecessors, (34), 4 states have return successors, (33), 6 states have call predecessors, (33), 6 states have call successors, (33) [2022-01-10 06:46:19,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:46:19,211 INFO L93 Difference]: Finished difference Result 14413 states and 19678 transitions. [2022-01-10 06:46:19,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-10 06:46:19,211 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 21.083333333333332) internal successors, (253), 12 states have internal predecessors, (253), 6 states have call successors, (34), 4 states have call predecessors, (34), 4 states have return successors, (33), 6 states have call predecessors, (33), 6 states have call successors, (33) Word has length 212 [2022-01-10 06:46:19,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:46:19,236 INFO L225 Difference]: With dead ends: 14413 [2022-01-10 06:46:19,237 INFO L226 Difference]: Without dead ends: 11344 [2022-01-10 06:46:19,243 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 419 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=239, Invalid=753, Unknown=0, NotChecked=0, Total=992 [2022-01-10 06:46:19,243 INFO L933 BasicCegarLoop]: 1074 mSDtfsCounter, 1680 mSDsluCounter, 5743 mSDsCounter, 0 mSdLazyCounter, 809 mSolverCounterSat, 479 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1750 SdHoareTripleChecker+Valid, 6817 SdHoareTripleChecker+Invalid, 1288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 479 IncrementalHoareTripleChecker+Valid, 809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 06:46:19,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1750 Valid, 6817 Invalid, 1288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [479 Valid, 809 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 06:46:19,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11344 states. [2022-01-10 06:46:19,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11344 to 6091. [2022-01-10 06:46:19,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6091 states, 4771 states have (on average 1.2728987633619786) internal successors, (6073), 4801 states have internal predecessors, (6073), 814 states have call successors, (814), 505 states have call predecessors, (814), 505 states have return successors, (814), 784 states have call predecessors, (814), 814 states have call successors, (814) [2022-01-10 06:46:19,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6091 states to 6091 states and 7701 transitions. [2022-01-10 06:46:19,735 INFO L78 Accepts]: Start accepts. Automaton has 6091 states and 7701 transitions. Word has length 212 [2022-01-10 06:46:19,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:46:19,735 INFO L470 AbstractCegarLoop]: Abstraction has 6091 states and 7701 transitions. [2022-01-10 06:46:19,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 21.083333333333332) internal successors, (253), 12 states have internal predecessors, (253), 6 states have call successors, (34), 4 states have call predecessors, (34), 4 states have return successors, (33), 6 states have call predecessors, (33), 6 states have call successors, (33) [2022-01-10 06:46:19,735 INFO L276 IsEmpty]: Start isEmpty. Operand 6091 states and 7701 transitions. [2022-01-10 06:46:19,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-01-10 06:46:19,758 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:46:19,759 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2022-01-10 06:46:19,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-01-10 06:46:19,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:46:19,966 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:46:19,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:46:19,966 INFO L85 PathProgramCache]: Analyzing trace with hash -2054205622, now seen corresponding path program 1 times [2022-01-10 06:46:19,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:46:19,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [785559070] [2022-01-10 06:46:19,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:46:19,967 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:46:19,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:46:19,968 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:46:19,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-01-10 06:46:20,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:46:20,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:46:20,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:46:20,410 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2022-01-10 06:46:20,410 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:46:20,410 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:46:20,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [785559070] [2022-01-10 06:46:20,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [785559070] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:46:20,410 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:46:20,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:46:20,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018348384] [2022-01-10 06:46:20,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:46:20,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:46:20,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:46:20,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:46:20,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:46:20,412 INFO L87 Difference]: Start difference. First operand 6091 states and 7701 transitions. Second operand has 5 states, 5 states have (on average 26.8) internal successors, (134), 4 states have internal predecessors, (134), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:46:20,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:46:20,782 INFO L93 Difference]: Finished difference Result 9961 states and 12760 transitions. [2022-01-10 06:46:20,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:46:20,783 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 4 states have internal predecessors, (134), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 212 [2022-01-10 06:46:20,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:46:20,793 INFO L225 Difference]: With dead ends: 9961 [2022-01-10 06:46:20,793 INFO L226 Difference]: Without dead ends: 4369 [2022-01-10 06:46:20,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:46:20,803 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 279 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:46:20,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [279 Valid, 426 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:46:20,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4369 states. [2022-01-10 06:46:21,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4369 to 4369. [2022-01-10 06:46:21,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4369 states, 3450 states have (on average 1.2826086956521738) internal successors, (4425), 3471 states have internal predecessors, (4425), 569 states have call successors, (569), 349 states have call predecessors, (569), 349 states have return successors, (569), 548 states have call predecessors, (569), 569 states have call successors, (569) [2022-01-10 06:46:21,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4369 states to 4369 states and 5563 transitions. [2022-01-10 06:46:21,121 INFO L78 Accepts]: Start accepts. Automaton has 4369 states and 5563 transitions. Word has length 212 [2022-01-10 06:46:21,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:46:21,122 INFO L470 AbstractCegarLoop]: Abstraction has 4369 states and 5563 transitions. [2022-01-10 06:46:21,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 4 states have internal predecessors, (134), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:46:21,122 INFO L276 IsEmpty]: Start isEmpty. Operand 4369 states and 5563 transitions. [2022-01-10 06:46:21,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-01-10 06:46:21,127 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:46:21,127 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:46:21,135 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Ended with exit code 0 [2022-01-10 06:46:21,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:46:21,334 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:46:21,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:46:21,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1151063544, now seen corresponding path program 1 times [2022-01-10 06:46:21,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:46:21,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [426950603] [2022-01-10 06:46:21,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:46:21,335 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:46:21,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:46:21,336 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:46:21,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-01-10 06:46:21,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:46:21,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:46:21,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:46:21,750 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 99 proven. 4 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-01-10 06:46:21,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:46:22,068 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 39 proven. 4 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-01-10 06:46:22,068 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:46:22,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [426950603] [2022-01-10 06:46:22,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [426950603] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:46:22,069 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:46:22,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2022-01-10 06:46:22,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137874303] [2022-01-10 06:46:22,069 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:46:22,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 06:46:22,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:46:22,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 06:46:22,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:46:22,070 INFO L87 Difference]: Start difference. First operand 4369 states and 5563 transitions. Second operand has 8 states, 8 states have (on average 23.0) internal successors, (184), 7 states have internal predecessors, (184), 3 states have call successors, (34), 4 states have call predecessors, (34), 6 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2022-01-10 06:46:22,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:46:22,582 INFO L93 Difference]: Finished difference Result 9377 states and 12263 transitions. [2022-01-10 06:46:22,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 06:46:22,582 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 23.0) internal successors, (184), 7 states have internal predecessors, (184), 3 states have call successors, (34), 4 states have call predecessors, (34), 6 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) Word has length 216 [2022-01-10 06:46:22,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:46:22,592 INFO L225 Difference]: With dead ends: 9377 [2022-01-10 06:46:22,592 INFO L226 Difference]: Without dead ends: 5462 [2022-01-10 06:46:22,597 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 424 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-01-10 06:46:22,598 INFO L933 BasicCegarLoop]: 472 mSDtfsCounter, 346 mSDsluCounter, 2511 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 2983 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:46:22,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [367 Valid, 2983 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:46:22,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5462 states. [2022-01-10 06:46:22,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5462 to 4369. [2022-01-10 06:46:22,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4369 states, 3450 states have (on average 1.2820289855072464) internal successors, (4423), 3471 states have internal predecessors, (4423), 569 states have call successors, (569), 349 states have call predecessors, (569), 349 states have return successors, (569), 548 states have call predecessors, (569), 569 states have call successors, (569) [2022-01-10 06:46:22,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4369 states to 4369 states and 5561 transitions. [2022-01-10 06:46:22,944 INFO L78 Accepts]: Start accepts. Automaton has 4369 states and 5561 transitions. Word has length 216 [2022-01-10 06:46:22,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:46:22,945 INFO L470 AbstractCegarLoop]: Abstraction has 4369 states and 5561 transitions. [2022-01-10 06:46:22,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.0) internal successors, (184), 7 states have internal predecessors, (184), 3 states have call successors, (34), 4 states have call predecessors, (34), 6 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2022-01-10 06:46:22,945 INFO L276 IsEmpty]: Start isEmpty. Operand 4369 states and 5561 transitions. [2022-01-10 06:46:22,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-01-10 06:46:22,950 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:46:22,950 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2022-01-10 06:46:22,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-01-10 06:46:23,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:46:23,157 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:46:23,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:46:23,158 INFO L85 PathProgramCache]: Analyzing trace with hash 763904757, now seen corresponding path program 1 times [2022-01-10 06:46:23,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:46:23,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1231207887] [2022-01-10 06:46:23,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:46:23,158 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:46:23,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:46:23,159 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:46:23,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-01-10 06:46:23,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:46:23,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:46:23,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:46:23,557 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-01-10 06:46:23,557 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:46:23,558 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:46:23,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1231207887] [2022-01-10 06:46:23,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1231207887] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:46:23,558 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:46:23,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 06:46:23,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803106883] [2022-01-10 06:46:23,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:46:23,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 06:46:23,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:46:23,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 06:46:23,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:46:23,559 INFO L87 Difference]: Start difference. First operand 4369 states and 5561 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 6 states have internal predecessors, (146), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 06:46:24,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:46:24,604 INFO L93 Difference]: Finished difference Result 15825 states and 21136 transitions. [2022-01-10 06:46:24,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 06:46:24,604 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 6 states have internal predecessors, (146), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 215 [2022-01-10 06:46:24,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:46:24,624 INFO L225 Difference]: With dead ends: 15825 [2022-01-10 06:46:24,624 INFO L226 Difference]: Without dead ends: 11966 [2022-01-10 06:46:24,629 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-01-10 06:46:24,630 INFO L933 BasicCegarLoop]: 458 mSDtfsCounter, 818 mSDsluCounter, 2164 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 834 SdHoareTripleChecker+Valid, 2622 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:46:24,630 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [834 Valid, 2622 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:46:24,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11966 states. [2022-01-10 06:46:25,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11966 to 6311. [2022-01-10 06:46:25,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6311 states, 4854 states have (on average 1.2855377008652658) internal successors, (6240), 4889 states have internal predecessors, (6240), 927 states have call successors, (927), 529 states have call predecessors, (927), 529 states have return successors, (927), 892 states have call predecessors, (927), 927 states have call successors, (927) [2022-01-10 06:46:25,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6311 states to 6311 states and 8094 transitions. [2022-01-10 06:46:25,123 INFO L78 Accepts]: Start accepts. Automaton has 6311 states and 8094 transitions. Word has length 215 [2022-01-10 06:46:25,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:46:25,123 INFO L470 AbstractCegarLoop]: Abstraction has 6311 states and 8094 transitions. [2022-01-10 06:46:25,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 6 states have internal predecessors, (146), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 06:46:25,124 INFO L276 IsEmpty]: Start isEmpty. Operand 6311 states and 8094 transitions. [2022-01-10 06:46:25,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2022-01-10 06:46:25,130 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:46:25,130 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:46:25,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2022-01-10 06:46:25,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:46:25,337 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:46:25,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:46:25,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1997314372, now seen corresponding path program 1 times [2022-01-10 06:46:25,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:46:25,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1621167966] [2022-01-10 06:46:25,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:46:25,338 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:46:25,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:46:25,339 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:46:25,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-01-10 06:46:25,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:46:25,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 06:46:25,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:46:25,751 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 67 proven. 60 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-01-10 06:46:25,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:46:26,040 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 29 proven. 26 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-01-10 06:46:26,041 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:46:26,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1621167966] [2022-01-10 06:46:26,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1621167966] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:46:26,041 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:46:26,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2022-01-10 06:46:26,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832105329] [2022-01-10 06:46:26,041 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:46:26,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 06:46:26,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:46:26,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 06:46:26,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-10 06:46:26,042 INFO L87 Difference]: Start difference. First operand 6311 states and 8094 transitions. Second operand has 10 states, 10 states have (on average 20.0) internal successors, (200), 9 states have internal predecessors, (200), 4 states have call successors, (35), 4 states have call predecessors, (35), 6 states have return successors, (33), 5 states have call predecessors, (33), 4 states have call successors, (33) [2022-01-10 06:46:27,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:46:27,596 INFO L93 Difference]: Finished difference Result 19384 states and 25561 transitions. [2022-01-10 06:46:27,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-10 06:46:27,597 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 20.0) internal successors, (200), 9 states have internal predecessors, (200), 4 states have call successors, (35), 4 states have call predecessors, (35), 6 states have return successors, (33), 5 states have call predecessors, (33), 4 states have call successors, (33) Word has length 221 [2022-01-10 06:46:27,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:46:27,625 INFO L225 Difference]: With dead ends: 19384 [2022-01-10 06:46:27,625 INFO L226 Difference]: Without dead ends: 13583 [2022-01-10 06:46:27,633 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 461 GetRequests, 439 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=140, Invalid=412, Unknown=0, NotChecked=0, Total=552 [2022-01-10 06:46:27,633 INFO L933 BasicCegarLoop]: 781 mSDtfsCounter, 1200 mSDsluCounter, 3012 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 369 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1205 SdHoareTripleChecker+Valid, 3793 SdHoareTripleChecker+Invalid, 993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 369 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 06:46:27,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1205 Valid, 3793 Invalid, 993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [369 Valid, 624 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 06:46:27,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13583 states. [2022-01-10 06:46:28,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13583 to 10221. [2022-01-10 06:46:28,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10221 states, 7688 states have (on average 1.2875910509885535) internal successors, (9899), 7751 states have internal predecessors, (9899), 1643 states have call successors, (1643), 889 states have call predecessors, (1643), 889 states have return successors, (1643), 1580 states have call predecessors, (1643), 1643 states have call successors, (1643) [2022-01-10 06:46:28,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10221 states to 10221 states and 13185 transitions. [2022-01-10 06:46:28,367 INFO L78 Accepts]: Start accepts. Automaton has 10221 states and 13185 transitions. Word has length 221 [2022-01-10 06:46:28,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:46:28,367 INFO L470 AbstractCegarLoop]: Abstraction has 10221 states and 13185 transitions. [2022-01-10 06:46:28,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 20.0) internal successors, (200), 9 states have internal predecessors, (200), 4 states have call successors, (35), 4 states have call predecessors, (35), 6 states have return successors, (33), 5 states have call predecessors, (33), 4 states have call successors, (33) [2022-01-10 06:46:28,367 INFO L276 IsEmpty]: Start isEmpty. Operand 10221 states and 13185 transitions. [2022-01-10 06:46:28,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2022-01-10 06:46:28,375 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:46:28,375 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:46:28,381 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Ended with exit code 0 [2022-01-10 06:46:28,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:46:28,577 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:46:28,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:46:28,577 INFO L85 PathProgramCache]: Analyzing trace with hash -491756480, now seen corresponding path program 1 times [2022-01-10 06:46:28,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:46:28,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [285172015] [2022-01-10 06:46:28,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:46:28,578 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:46:28,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:46:28,579 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:46:28,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-01-10 06:46:28,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:46:28,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-10 06:46:28,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:46:29,244 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 96 proven. 18 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-01-10 06:46:29,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:46:29,597 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-01-10 06:46:29,598 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:46:29,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [285172015] [2022-01-10 06:46:29,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [285172015] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:46:29,598 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:46:29,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2022-01-10 06:46:29,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584509119] [2022-01-10 06:46:29,598 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:46:29,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-10 06:46:29,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:46:29,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-10 06:46:29,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-01-10 06:46:29,599 INFO L87 Difference]: Start difference. First operand 10221 states and 13185 transitions. Second operand has 18 states, 18 states have (on average 15.166666666666666) internal successors, (273), 18 states have internal predecessors, (273), 7 states have call successors, (39), 5 states have call predecessors, (39), 5 states have return successors, (38), 7 states have call predecessors, (38), 7 states have call successors, (38) [2022-01-10 06:46:33,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:46:33,662 INFO L93 Difference]: Finished difference Result 24845 states and 32857 transitions. [2022-01-10 06:46:33,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-10 06:46:33,664 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 15.166666666666666) internal successors, (273), 18 states have internal predecessors, (273), 7 states have call successors, (39), 5 states have call predecessors, (39), 5 states have return successors, (38), 7 states have call predecessors, (38), 7 states have call successors, (38) Word has length 223 [2022-01-10 06:46:33,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:46:33,742 INFO L225 Difference]: With dead ends: 24845 [2022-01-10 06:46:33,743 INFO L226 Difference]: Without dead ends: 15134 [2022-01-10 06:46:33,753 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 433 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 863 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=821, Invalid=3085, Unknown=0, NotChecked=0, Total=3906 [2022-01-10 06:46:33,754 INFO L933 BasicCegarLoop]: 719 mSDtfsCounter, 2456 mSDsluCounter, 5210 mSDsCounter, 0 mSdLazyCounter, 4441 mSolverCounterSat, 1245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2456 SdHoareTripleChecker+Valid, 5929 SdHoareTripleChecker+Invalid, 5686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1245 IncrementalHoareTripleChecker+Valid, 4441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-01-10 06:46:33,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2456 Valid, 5929 Invalid, 5686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1245 Valid, 4441 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-01-10 06:46:33,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15134 states. [2022-01-10 06:46:34,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15134 to 11814. [2022-01-10 06:46:34,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11814 states, 8900 states have (on average 1.2853932584269663) internal successors, (11440), 8972 states have internal predecessors, (11440), 1893 states have call successors, (1893), 1020 states have call predecessors, (1893), 1020 states have return successors, (1893), 1821 states have call predecessors, (1893), 1893 states have call successors, (1893) [2022-01-10 06:46:34,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11814 states to 11814 states and 15226 transitions. [2022-01-10 06:46:34,646 INFO L78 Accepts]: Start accepts. Automaton has 11814 states and 15226 transitions. Word has length 223 [2022-01-10 06:46:34,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:46:34,647 INFO L470 AbstractCegarLoop]: Abstraction has 11814 states and 15226 transitions. [2022-01-10 06:46:34,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 15.166666666666666) internal successors, (273), 18 states have internal predecessors, (273), 7 states have call successors, (39), 5 states have call predecessors, (39), 5 states have return successors, (38), 7 states have call predecessors, (38), 7 states have call successors, (38) [2022-01-10 06:46:34,647 INFO L276 IsEmpty]: Start isEmpty. Operand 11814 states and 15226 transitions. [2022-01-10 06:46:34,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2022-01-10 06:46:34,655 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:46:34,655 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:46:34,662 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Ended with exit code 0 [2022-01-10 06:46:34,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:46:34,856 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:46:34,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:46:34,856 INFO L85 PathProgramCache]: Analyzing trace with hash -999090114, now seen corresponding path program 1 times [2022-01-10 06:46:34,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:46:34,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1609907403] [2022-01-10 06:46:34,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:46:34,857 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:46:34,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:46:34,858 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:46:34,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-01-10 06:46:34,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:46:34,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:46:34,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:46:35,244 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-01-10 06:46:35,244 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:46:35,244 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:46:35,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1609907403] [2022-01-10 06:46:35,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1609907403] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:46:35,244 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:46:35,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 06:46:35,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880341375] [2022-01-10 06:46:35,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:46:35,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 06:46:35,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:46:35,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 06:46:35,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:46:35,245 INFO L87 Difference]: Start difference. First operand 11814 states and 15226 transitions. Second operand has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 6 states have internal predecessors, (162), 3 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2022-01-10 06:46:36,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:46:36,449 INFO L93 Difference]: Finished difference Result 24598 states and 32150 transitions. [2022-01-10 06:46:36,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 06:46:36,449 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 6 states have internal predecessors, (162), 3 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) Word has length 224 [2022-01-10 06:46:36,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:46:36,476 INFO L225 Difference]: With dead ends: 24598 [2022-01-10 06:46:36,476 INFO L226 Difference]: Without dead ends: 13357 [2022-01-10 06:46:36,490 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-01-10 06:46:36,490 INFO L933 BasicCegarLoop]: 631 mSDtfsCounter, 640 mSDsluCounter, 1687 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 640 SdHoareTripleChecker+Valid, 2318 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:46:36,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [640 Valid, 2318 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:46:36,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13357 states. [2022-01-10 06:46:37,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13357 to 11814. [2022-01-10 06:46:37,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11814 states, 8900 states have (on average 1.2834831460674156) internal successors, (11423), 8972 states have internal predecessors, (11423), 1893 states have call successors, (1893), 1020 states have call predecessors, (1893), 1020 states have return successors, (1893), 1821 states have call predecessors, (1893), 1893 states have call successors, (1893) [2022-01-10 06:46:37,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11814 states to 11814 states and 15209 transitions. [2022-01-10 06:46:37,459 INFO L78 Accepts]: Start accepts. Automaton has 11814 states and 15209 transitions. Word has length 224 [2022-01-10 06:46:37,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:46:37,460 INFO L470 AbstractCegarLoop]: Abstraction has 11814 states and 15209 transitions. [2022-01-10 06:46:37,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 6 states have internal predecessors, (162), 3 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2022-01-10 06:46:37,460 INFO L276 IsEmpty]: Start isEmpty. Operand 11814 states and 15209 transitions. [2022-01-10 06:46:37,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2022-01-10 06:46:37,469 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:46:37,469 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2022-01-10 06:46:37,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2022-01-10 06:46:37,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:46:37,672 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:46:37,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:46:37,672 INFO L85 PathProgramCache]: Analyzing trace with hash 75254726, now seen corresponding path program 1 times [2022-01-10 06:46:37,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:46:37,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1206428250] [2022-01-10 06:46:37,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:46:37,673 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:46:37,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:46:37,674 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:46:37,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-01-10 06:46:37,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:46:37,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-10 06:46:37,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:46:38,317 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 81 proven. 20 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-01-10 06:46:38,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:46:38,688 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 19 proven. 12 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-01-10 06:46:38,689 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:46:38,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1206428250] [2022-01-10 06:46:38,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1206428250] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:46:38,689 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:46:38,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2022-01-10 06:46:38,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570010283] [2022-01-10 06:46:38,689 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:46:38,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-10 06:46:38,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:46:38,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-10 06:46:38,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-01-10 06:46:38,690 INFO L87 Difference]: Start difference. First operand 11814 states and 15209 transitions. Second operand has 18 states, 18 states have (on average 15.722222222222221) internal successors, (283), 18 states have internal predecessors, (283), 7 states have call successors, (39), 5 states have call predecessors, (39), 5 states have return successors, (38), 7 states have call predecessors, (38), 7 states have call successors, (38) [2022-01-10 06:46:43,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:46:43,098 INFO L93 Difference]: Finished difference Result 29668 states and 39180 transitions. [2022-01-10 06:46:43,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-01-10 06:46:43,098 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 15.722222222222221) internal successors, (283), 18 states have internal predecessors, (283), 7 states have call successors, (39), 5 states have call predecessors, (39), 5 states have return successors, (38), 7 states have call predecessors, (38), 7 states have call successors, (38) Word has length 224 [2022-01-10 06:46:43,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:46:43,138 INFO L225 Difference]: With dead ends: 29668 [2022-01-10 06:46:43,138 INFO L226 Difference]: Without dead ends: 18455 [2022-01-10 06:46:43,169 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 525 GetRequests, 437 SyntacticMatches, 2 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2131 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1447, Invalid=6209, Unknown=0, NotChecked=0, Total=7656 [2022-01-10 06:46:43,170 INFO L933 BasicCegarLoop]: 763 mSDtfsCounter, 3011 mSDsluCounter, 5273 mSDsCounter, 0 mSdLazyCounter, 4088 mSolverCounterSat, 1104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3011 SdHoareTripleChecker+Valid, 6036 SdHoareTripleChecker+Invalid, 5192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1104 IncrementalHoareTripleChecker+Valid, 4088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:46:43,170 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3011 Valid, 6036 Invalid, 5192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1104 Valid, 4088 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-01-10 06:46:43,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18455 states. [2022-01-10 06:46:44,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18455 to 14303. [2022-01-10 06:46:44,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14303 states, 10819 states have (on average 1.2799704224050281) internal successors, (13848), 10904 states have internal predecessors, (13848), 2267 states have call successors, (2267), 1216 states have call predecessors, (2267), 1216 states have return successors, (2267), 2182 states have call predecessors, (2267), 2267 states have call successors, (2267) [2022-01-10 06:46:44,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14303 states to 14303 states and 18382 transitions. [2022-01-10 06:46:44,325 INFO L78 Accepts]: Start accepts. Automaton has 14303 states and 18382 transitions. Word has length 224 [2022-01-10 06:46:44,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:46:44,325 INFO L470 AbstractCegarLoop]: Abstraction has 14303 states and 18382 transitions. [2022-01-10 06:46:44,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 15.722222222222221) internal successors, (283), 18 states have internal predecessors, (283), 7 states have call successors, (39), 5 states have call predecessors, (39), 5 states have return successors, (38), 7 states have call predecessors, (38), 7 states have call successors, (38) [2022-01-10 06:46:44,325 INFO L276 IsEmpty]: Start isEmpty. Operand 14303 states and 18382 transitions. [2022-01-10 06:46:44,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2022-01-10 06:46:44,336 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:46:44,336 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2022-01-10 06:46:44,343 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Ended with exit code 0 [2022-01-10 06:46:44,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:46:44,537 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:46:44,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:46:44,537 INFO L85 PathProgramCache]: Analyzing trace with hash -477408815, now seen corresponding path program 1 times [2022-01-10 06:46:44,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:46:44,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1802538737] [2022-01-10 06:46:44,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:46:44,538 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:46:44,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:46:44,539 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:46:44,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-01-10 06:46:44,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:46:44,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:46:44,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:46:44,916 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-01-10 06:46:44,916 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:46:44,916 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:46:44,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1802538737] [2022-01-10 06:46:44,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1802538737] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:46:44,916 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:46:44,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 06:46:44,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723249411] [2022-01-10 06:46:44,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:46:44,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 06:46:44,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:46:44,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 06:46:44,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:46:44,917 INFO L87 Difference]: Start difference. First operand 14303 states and 18382 transitions. Second operand has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 6 states have internal predecessors, (159), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2022-01-10 06:46:46,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:46:46,765 INFO L93 Difference]: Finished difference Result 33009 states and 43727 transitions. [2022-01-10 06:46:46,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 06:46:46,765 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 6 states have internal predecessors, (159), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) Word has length 223 [2022-01-10 06:46:46,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:46:46,805 INFO L225 Difference]: With dead ends: 33009 [2022-01-10 06:46:46,805 INFO L226 Difference]: Without dead ends: 19485 [2022-01-10 06:46:46,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-01-10 06:46:46,822 INFO L933 BasicCegarLoop]: 511 mSDtfsCounter, 757 mSDsluCounter, 1532 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 2043 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:46:46,822 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [757 Valid, 2043 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:46:46,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19485 states. [2022-01-10 06:46:47,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19485 to 14275. [2022-01-10 06:46:47,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14275 states, 10791 states have (on average 1.2755073672504864) internal successors, (13764), 10876 states have internal predecessors, (13764), 2267 states have call successors, (2267), 1216 states have call predecessors, (2267), 1216 states have return successors, (2267), 2182 states have call predecessors, (2267), 2267 states have call successors, (2267) [2022-01-10 06:46:47,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14275 states to 14275 states and 18298 transitions. [2022-01-10 06:46:48,002 INFO L78 Accepts]: Start accepts. Automaton has 14275 states and 18298 transitions. Word has length 223 [2022-01-10 06:46:48,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:46:48,003 INFO L470 AbstractCegarLoop]: Abstraction has 14275 states and 18298 transitions. [2022-01-10 06:46:48,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 6 states have internal predecessors, (159), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2022-01-10 06:46:48,003 INFO L276 IsEmpty]: Start isEmpty. Operand 14275 states and 18298 transitions. [2022-01-10 06:46:48,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-01-10 06:46:48,014 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:46:48,014 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:46:48,023 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2022-01-10 06:46:48,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:46:48,216 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:46:48,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:46:48,216 INFO L85 PathProgramCache]: Analyzing trace with hash -617979764, now seen corresponding path program 1 times [2022-01-10 06:46:48,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:46:48,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [774864554] [2022-01-10 06:46:48,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:46:48,217 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:46:48,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:46:48,221 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:46:48,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-01-10 06:46:48,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:46:48,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:46:48,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:46:48,570 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2022-01-10 06:46:48,570 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:46:48,570 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:46:48,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [774864554] [2022-01-10 06:46:48,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [774864554] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:46:48,571 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:46:48,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:46:48,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413980008] [2022-01-10 06:46:48,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:46:48,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:46:48,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:46:48,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:46:48,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:46:48,572 INFO L87 Difference]: Start difference. First operand 14275 states and 18298 transitions. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-01-10 06:46:49,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:46:49,584 INFO L93 Difference]: Finished difference Result 26739 states and 34427 transitions. [2022-01-10 06:46:49,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:46:49,585 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 225 [2022-01-10 06:46:49,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:46:49,615 INFO L225 Difference]: With dead ends: 26739 [2022-01-10 06:46:49,615 INFO L226 Difference]: Without dead ends: 12975 [2022-01-10 06:46:49,632 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:46:49,632 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 271 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:46:49,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [271 Valid, 481 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:46:49,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12975 states.